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Hayden Fan Clutch Operation & Troubleshooting The Fan Clutch is a component of the cooling system that varies the fan speed to meet the cooling needs of the engine. Nearly all rear wheel drive vehicles use Fan Clutches to control fan speed because of their ability to provide high volumes of air and good fuel economy. Despite their popularity, they are one of the least understood cooling components. There are two types of Fan Clutches, the Non-Thermal (also called centrifugal clutches) and the Thermal Fan Clutch. Non-Thermal Fan Clutch ? Low cost alternative for some standard thermal clutches. ? Always engaged, less fuel savings than a thermal clutch. ? Spins at about 30-60% of the water pump speed. ? Shorter life expectancy ? Cannot replace a heavy-duty clutch ? Identified by the smooth, steel faceplate (without a thermal spring assembly) on the front. Thermal Fan Clutch ? Varies the fan speed with temperature of the air behind the radiator. ? Engaged (high speed) operation provides maximum cooling ? Disengaged (low speed) operation provides fuel savings and noise reduction. ? Greater life expectancy than a non-thermal clutch ? Briefly engaged at cold start-up. ? Engages at about 170° radiator air temperature (about 30° lower than coolant temperature). The air temperature coming through the radiator is sensed by the bi-metal thermal spring on the front of the thermal fan clutch. It expands and contracts with the change in air temperature operating a valve inside of the clutch. When cold, the silicone drive fluid is pumped from the working area to the reservoir. When hot, the valve opens allowing fluid from the reservoir to be transferred to the working area thereby increasing the fan speed. The clutch disengages as the air temperature decreases, closing the valve and allowing the silicone fluid to be pumped back into the reservoir. A thermal fan clutch is engaged on a cold startup because the fluid drains into the working area when the engine is shut off. The fan clutch will slow down shortly after startup as a result of a pumping action produced by a difference in speed between the shaft and the body of the clutch. Most models are designed to duplicate original equipment performance. Some Chevrolet/GMC truck models are specifically designed to engage at lower temperatures than the original equipment parts that they replace. 1 Thermal Fan Clutch Design Types We make four different types of thermal fan clutches; Standard, Heavy Duty, Severe Duty and Truck Fan Drives. Each type is engineered to simulate the performance, fit and appearance of the original equipment clutch that it replaces. All fan clutches are for specific applications and should only be applied for which they are cataloged. Use of the wrong fan clutch may result in poor cooling, excess noise, reduced mileage, or fan clutch failure. Standard Duty Thermal ? Turns fan 60-70% of shaft speed when engaged. ? Disengage to 20-30% of the shaft speed ? Used with lighter pitch fans. (1-1/2 of pitch) ? Flat plate impeller design with up to 11.4 Sq. In. of working surface. ? Identified by a smooth steel faceplate & thermal spring assembly on the front side. Heavy-Duty Thermal ? Turns the fan 70-90% of the shaft speed when engaged for increased cooling. ? Turns the fan 25-35% of the shaft speed when disengaged. ? Used with deeper pitch fans. (2 -1/2 of pitch). ? Land and groove design with up to 27 Sq. In. of working surface. ? Identified by finned aluminum faceplate and thermal spring on the front. Severe Duty Thermal ? Turns the fan 80-90% of the shaft speed when engaged. ? Turns the fan 20-30% of the shaft speed when disengaged. ? Used with deeper pitch fans. (2 -1/2 of pitch). ? Land and groove design with up to 72 Sq. In. of working area. ? Larger working surface provides cooler running and longer life expectancy. ? Thicker body and deep finned faceplate dissipate more heat. ? Can be used in place of many heavy-duty clutches. 2 Truck Fan Drive ? Turns the fan 80-90% of the shaft speed when engaged. ? Turns the fan 20-30% of the shaft speed when disengaged. ? Used with larger fans found on medium-duty truck applications. ? Land and groove design with up to 150 Sq. In. of working area. ? Larger working surface provides cooler running and longer life expectancy. Fan Clutch Trouble Shooting Faulty fan clutches can be detected by checking for obvious indications of failure such as: ? Leaking fluid - oily build up around the bearing or thermal spring. ? Bad bearing - seized, turns rough or has excessive play (more than 1/4 at fan tip). ? Worn thermal spring - spring is loose. Some fan clutches will show no visible indication of a problem yet may still be faulty. The following may also indicate a faulty fan clutch: ? Fan spins excessively - three or more times when hot engine is shut off. ? Poor air conditioning - At low speed due to excessive high side refrigerant pressures. ? Doesnt engage or lockup- Fan speed does not increase when engine is hot. ? Does not disengage - Fan clutch wont slow down when engine is cold. Other Cooling Systems Problems Affecting Fan Clutch Operation ? Plugged radiator (inside or outside) can delay or eliminate fan clutch engagement. ? Partially opened thermostat does not allow full coolant flow to the radiator. ? Too much antifreeze concentration does not transfer heat as well as 50/50% mixture. Symptoms of Fan Clutch Problems ? Poor cooling at low speed but good cooling at high speeds. ? Poor air conditioning at low speeds. ? No increase in fan noise when engine is hot. Symptoms of Radiator Problems ? Poor cooling at high speeds. ? Good cooling at low speeds. 3 4 (1) STD = Clockwise rotation when looking at engine from radiator. REV = Counter clockwise rotation when looking at engine from radiator. * Includes 5/8 3/4 reducer bushing. ** Stepped pilot. *** Includes 15mm 19mm reducer bushing. FAN CLUTCHESSpecification Chart FAN CLUTCHES 1705 B STD & REV 7.23 .63 1.53 3.25 5/16-18 HOLE (4) 1706 B STD & REV 7.23 .63 1.75 3.25 5/16-18 HOLE (4) 1707 B STD & REV 7.23 .63 2.03 3.25 5/16-18 HOLE (4) 1710 B STD & REV 7.23 .63/.75 * 1.75 3.00 5/16-18 HOLE (4) 2550 A STD 5.85 .55/.98 ** 2.21 5.27 M6x1.0 HOLE (4) 2551 A STD 5.48 .63 1.75 4.88 M6x1.0 HOLE (4) 2554 A STD 5.85 .63 1.96 4.80 M6x1.0 HOLE (4) 2555 A STD 5.85 .71/1.36 2.46 4.80 M6x1.0 HOLE (4) 2556 A STD 5.85 .63 1.76 5.03 M6x1.0 HOLE (4) 2557 A STD 5.85 .63 2.40 4.88 M6x1.0 HOLE (4) 2558 A STD 5.85 .75 1.79 4.80 M6x1.0 HOLE (4) 2559 A STD 5.85 .63 2.15 4.80 M6x1.0 HOLE (4) 2560 A STD 5.85 .63/1.25 1.94 5.27 M6x1.0 HOLE (4) 2561 A STD 5.85 .63/1.26 2.10 4.80 M6x1.0 HOLE (4) 2562 A STD 5.59 .63/.95 1.60 5.11 M6x1.0 HOLE (4) 2565 A STD 5.85 .63 1.81 4.80 M6x1.0 HOLE (4) 2567 A STD 5.85 .63 2.15 4.80 M6x1.0 HOLE (4) 2570 A STD 5.85 .63/1.25 1.82 5.27 M6x1.0 HOLE (4) 2580 A REV 5.65 .63 2.15 5.03 M6x1.0 HOLE (4) 2581 A STD 5.85 M30x1.5 LEFT .84 3.94 M8x1.25 HOLE (4) 2582 A STD 4.45 0.94 2.02 3.86 M6 x 1.0 HOLE (4) 2583 A STD 4.45 0.94 1.86 3.86 M6 x 1.0 HOLE (4) 2585 A STD 6.84 0.67 1.84 4.18 M6 x 1.0 HOLE (4) 2586 A STD 6.84 0.95 1.56 4.17 M6 x 1.0 HOLE (4) 2587 A STD 6.46 0.76 2.38 5.47 M6 x 1.0 HOLE (4) 2590 A STD 5.85 N/A 3.84 5.27 M6 x 1.0 HOLE (4) 2591 A STD 5.43 M24x1.5 LEFT 1.37 4.88 M6 x 1.0 HOLE (4) 2592 A STD 6.51 0.63 2.07 5.98 M6 x 1.0 HOLE (4) 2593 A STD 6.30 M24x1.5 LEFT 1.46 5.79 M6 x 1.0 HOLE (4) 2594 A STD 6.30 M24x1.5 LEFT 1.46 5.79 M6 x 1.0 HOLE (4) 2596 A STD 5.43 0.71 1.55 4.88 M6 x 1.0 HOLE (4) 2597 A STD 5.43 M24x1.5 LEFT 1.28 4.88 M6 x 1.0 HOLE (4) 2598 A STD 6.30 0.41 0.95 5.79 M6 x 1.0 HOLE (4) 2610 B STD 6.00 .63 1.75 3.25 M6x1.0 HOLE (4) 2614 B STD 6.00 M30x1.5 LEFT 1.75 3.25 M6x1.0 HOLE (4) 2615 B STD 6.00 .63 1.53 3.25 5/16-18 HOLE (4) 2616 B STD 6.00 .63 2.32 3.25 M6x1.0 HOLE (4) 2617 B STD 6.00 M30x1.5 LEFT 2.32 3.25 M6x1.0 HOLE (4) 5 & 6 Import Non-Thermal & Std Thermal Heavy Duty Severe Duty & Truck Fan Drive Fan Clutch Specification Chart MODEL DRAWING TYPE ROTATION (1) A OVERALL DIA. B PILOT DIA. OR THREAD SIZE C FAN MOUNT HEIGHT D FAN BOLT CIRCLE BOLT/NUT THREADS A B C D 5 (1) STD = Clockwise rotation when looking at engine from radiator. REV = Counter clockwise rotation when looking at engine from radiator. * Includes 5/8 3/4 reducer bushing. ** Stepped pilot. *** Includes 15mm 19mm reducer bushing. FAN CLUTCHESSpecification Chart FAN CLUTCHES 2618 B STD 6.00 M30x1.5 LEFT 2.76 3.25 M6x1.0 HOLE (4) 2619 B REV 6.00 M30x1.5 RIGHT 2.42 3.25 M8x1.25 HOLE (4) 2620 B REV 6.00 M30x1.5 RIGHT 1.25 3.25 5/16-18 HOLE (4) 2621 B REV 6.00 M30x1.5 RIGHT 2.00 3.25 5/16-18 HOLE (4) 2622 B REV 6.00 .63 1.53 3.25 5/16-18 HOLE (4) 2623 B STD 6.00 .63 1.75 3.25 M8x1.25 HOLE (4) 2624 B REV 6.00 M30x1.5 RIGHT 1.75 3.25 5/16-18 HOLE (4) 2625 B REV 6.00 .63 1.53 3.25 5/16-18 HOLE (4) 2626 B REV 6.00 M30x1.5 RIGHT 1.75 3.25 M10x1.5 HOLE (4) 2631 B REV 6.00 .63 1.75 3.25 M10x1.5 HOLE (4) 2632 B REV 6.00 M30x1.5 RIGHT 1.75 3.25 M10x1.5 HOLE (4) 2650 A STD 6.20 .63/1.25 2.36 5.65 M6x1.0 HOLE (4) 2651 A STD 6.65 .67 1.94 6.03 M6x1.0 HOLE (4) 2652 A STD 6.65 .69 2.14 6.03 M6x1.0 HOLE (4) 2653 A STD 6.65 .63/1.81 2.44 5.35 M6x1.0 HOLE (4) 2654 A STD 6.65 .63/.95 2.34 6.03 M6x1.0 HOLE (4) 2655 A STD 6.65 .63/2.28 2.34 5.35 M6x1.0 HOLE (4) 2656 A REV 6.65 .63/2.32 2.55 5.35 M6x1.0 HOLE (4) 2657 A STD 6.65 .63/1.81 2.44 5.35 M6x1.0 HOLE (4) 2658 A REV 6.65 .63 2.29/1.55 6.03 M6x1.0 HOLE (4) 2659 A STD 6.65 .59/.63 2.29 5.35 M6x1.0 HOLE (4) 2661 A STD 6.65 .87/1.81 2.85 5.35 M6x1.0 HOLE (4) 2662 A STD 6.65 .63 2.53 6.03 M6x1.0 HOLE (4) 2663 A REV 6.65 .63/1.81 2.70 5.35 M6x1.0 HOLE (4) 2664 A STD 6.20 .63/1.26 2.36 5.65 M6x1.0 HOLE (4) 2665 B STD 6.00 .75 1.09 3.25 5/16-18 HOLE (4) 2666 A STD 6.20 .63/1.25 3.15 5.65 M6x1.0 HOLE (4) 2667 A STD 6.20 1.25 2.17 5.65 M6x1.0 HOLE (4) 2668 A STD 6.65 .71 2.10 6.03 M6x1.0 HOLE (4) 2669 A STD 6.20 .63/1.25 2.17 5.65 M6x1.0 HOLE (4) 2670 A STD 6.65 .63/1.81 2.70 5.35 M6x1.0 HOLE (4) 2671 A STD 6.65 .63/1.81 2.70 5.35 M6x1.0 HOLE (4) 2672 A REV 6.65 .63/1.81 2.70 5.35 M6x1.0 HOLE (4) 2673 A STD 6.65 .88/.94 2.28 6.03 M6x1.0 HOLE (4) 2674 A STD 6.65 .63/1.81 2.70 5.35 M6x1.0 HOLE (4) 2675 A REV 6.65 M30x1.5 RIGHT 2.19 6.03 M6x1.0 HOLE (4) 2676 A STD 6.65 .82/1.26 2.35 5.98 M6x1.0 HOLE (4) 2677 A REV 6.65 .63/2.33 2.59 5.35 M6x1.0 HOLE (4) Fan Clutch Specification Chart MODEL DRAWING TYPE ROTATION (1) A OVERALL DIA. B PILOT DIA. OR THREAD SIZE C FAN MOUNT HEIGHT D FAN BOLT CIRCLE BOLT/NUT THREADS 5 & 6 Import Non-Thermal & Std Thermal Heavy Duty Severe Duty & Truck Fan Drive A B C D 6 (1) STD = Clockwise rotation when looking at engine from radiator. REV = Counter clockwise rotation when looking at engine from radiator. * Includes 5/8 3/4 reducer bushing. ** Stepped pilot. *** Includes 15mm 19mm reducer bushing. FAN CLUTCHESSpecification Chart FAN CLUTCHES 2678 A REV 6.65 .63/2.33 2.59 5.35 M6x1.0 HOLE (4) 2679 A REV 6.65 .63/2.33 2.59 5.35 M6x1.0 HOLE (4) 2680 A STD 6.65 .63 2.25 6.03 M6x1.0 HOLE (4) 2681 A REV 6.65 M30x1.5 RIGHT 2.19 6.03 M6x1.0 HOLE (4) 2682 A STD 6.65 .63/2.32 2.85 5.83 M6x1.0 HOLE (4) 2683 A STD 6.65 .63/1.81 2.98 5.35 M6x1.0 HOLE (4) 2691 A STD 6.30 M24x1.5 LEFT 1.44 5.79 M6 x 1.0 HOLE (4) 2692 A STD 6.30 0.42 0.95 5.79 M6 x 1.0 HOLE (4) 2693 A REV 6.30 0.42 0.95 5.79 M6 x 1.0 HOLE (4) 2694 A STD 6.30 M30x1.5 LEFT 1.41 5.79 M6 x 1.0 HOLE (4) 2695 A STD 6.51 0.41 1.26 5.98 M6 x 1.0 HOLE (4) 2696 A REV 6.30 M30x1.5 RIGHT 1.41 5.79 M6 x 1.0 HOLE (4) 2697 A REV 6.30 M30x1.5 RIGHT 1.41 5.79 M6 x 1.0 HOLE (4) 2705 B STD 7.23 .63 1.53 3.25 5/16-18 HOLE (4) 2706 B STD 7.23 .63 1.75 3.25 5/16-18 HOLE (4) 2707 B STD 7.23 .63 2.03 3.25 5/16-18 HOLE (4) 2708 B STD 7.23 .63 2.32 3.25 5/16-18 HOLE (4) 2710 B STD 7.23 .75 1.75 3.00 5/16-18 HOLE (4) 2711 B STD 7.23 .75 1.40 3.00 5/16-18 HOLE (4) 2713 B STD 7.23 .75 1.62 3.25 5/16-18 HOLE (4) 2714 B STD 7.23 .75 1.80 3.25 5/16-18 HOLE (4) 2715 B STD 7.23 M30x1.5 LEFT 1.25 3.00 5/16-18 HOLE (4) 2716 B REV 7.23 M30x1.5 RIGHT 1.25 3.00 5/16-18 HOLE (4) 2717 B REV 7.23 M30x1.5 RIGHT 1.25 3.25 M6x1.0 HOLE (4) 2722 B REV 7.23 .63 2.25 3.25 M10x1.5 HOLE (4) 2723 B REV 7.23 .63 1.75 3.25 5/16-18 HOLE (4) 2724 B REV 7.23 .63 1.63 3.25 M10x1.5 HOLE (4) 2726 B REV 7.23 MJ33x1.5 RIGHT 1.25 3.00 5/16-18 HOLE (4) 2727 B REV 7.23 .63 2.00 3.25 M10x1.5 HOLE (4) 2731 C STD 7.23 .63 2.25 3.25 5/16-18 HOLE (4) 2733 C REV 7.23 .63 1.75 3.25 5/16-18 HOLE (4) 2734 C REV 7.23 .63 1.63 3.25 M10x1.5 HOLE (4) 2736 C REV 7.23 M30x1.5 RIGHT 1.25 3.25 5/16-18 HOLE (4) 2737 C REV 7.23 .63 1.53 3.25 5/16-18 HOLE (4) 2739 B REV 7.23 .63 1.75 3.25 M10x1.5 HOLE (4) 2740 C REV 7.23 M30x1.5 RIGHT 2.70 3.25 5/16-18 HOLE (4) 2741 C STD 7.23 .75 1.80 3.25 5/16-18 HOLE (4) 2742 C REV 7.23 M30x1.5 RIGHT 2.70 3.25 5/16-18 HOLE (4) 5 & 6 Import Non-Thermal & Std Thermal Heavy Duty Severe Duty & Truck Fan Drive Fan Clutch Specification Chart MODEL DRAWING TYPE ROTATION (1) A OVERALL DIA. B PILOT DIA. OR THREAD SIZE C FAN MOUNT HEIGHT D FAN BOLT CIRCLE BOLT/NUT THREADS A B C D 7 (1) STD = Clockwise rotation when looking at engine from radiator. REV = Counter clockwise rotation when looking at engine from radiator. * Includes 5/8 3/4 reducer bushing. ** Stepped pilot. *** Includes 15mm 19mm reducer bushing. FAN CLUTCHESSpecification Chart FAN CLUTCHES 2743 C REV 7.23 M30x1.5 RIGHT 2.00 3.25 5/16-18 HOLE (4) 2744 C REV 7.23 M30x1.5 RIGHT 1.75 3.25 M10x1.5 HOLE (4) 2747 C STD 7.23 .75 1.62 3.25 5/16-18 HOLE (4) 2748 C REV 7.23 M30x1.5 RIGHT 2.70 3.25 5/16-18 HOLE (4) 2765 B STD 7.23 .75 1.09 3.25 5/16-18 HOLE (4) 2770 C REV 7.23 M30x1.5 RIGHT 1.25 3.25 5/16-18 HOLE (4) 2771 C REV 7.23 M30x1.5 RIGHT 1.75 3.25 5/16-18 HOLE (4) 2772 C STD 7.23 MJ24x1.5 LEFT 1.02 3.25 5/16-18 HOLE (4) 2774 C REV 7.23 M30x1.5 RIGHT 1.25 3.25 5/16-18 HOLE (4) 2775 D REV 6.45 M30x1.5 RIGHT 1.50 3.25 5/16-18 HOLE (4) 2776 D REV 6.45 M30x1.5 RIGHT 1.25 3.25 M6x1.0 HOLE (4) 2778 D REV 6.45 M30x1.5 RIGHT 2.60 3.25 M10x1.5 HOLE (4) 2779 D STD 6.45 M30x1.5 LEFT 2.76 3.25 M6x1.0 HOLE (4) 2780 D REV 6.45 M30x1.5 RIGHT 1.75 3.25 M10x1.5 HOLE (4) 2781 C REV 7.23 M30x1.5 RIGHT 1.25 3.25 5/16-18 HOLE (4) 2782 D STD 6.45 .63 1.63 3.25 5/16-18 HOLE (4) 2783 D REV 6.45 .63 1.80 3.25 5/16-18 HOLE (4) 2784 D REV 6.45 .63 1.63 3.25 M10x1.5 HOLE (4) 2785 D REV 6.45 .75 1.63 3.25 M10x1.5 HOLE (4) 2786 D REV 6.45 M30x1.5 RIGHT 1.75 3.25 M10x1.5 HOLE (4) 2787 D REV 6.45 M30x1.5 RIGHT 1.25 3.25 M10x1.5 HOLE (4) 2788 D STD 6.45 M30x1.5 LEFT 1.25 3.25 5/16-18 HOLE (4) 2789 D REV 6.45 M30x1.5 RIGHT 2.42 3.25 5/16-18 HOLE (4) 2790 D REV 6.45 M30x1.5 RIGHT 1.25 3.25 5/16-18 HOLE (4) 2791 D REV 6.45 M30x1.5 RIGHT 1.75 3.25 5/16-18 HOLE (4) 2793 D REV 6.45 M30x1.5 RIGHT 1.25 3.25 M6x1.0 HOLE (4) 2794 D REV 6.45 M30x1.5 RIGHT 1.25 3.25 M6x1.0 HOLE (4) 2795 D REV 6.45 M30x1.5 RIGHT 2.42 3.25 M6x1.0 HOLE (4) 2796 D REV 6.45 .63 1.63 3.25 5/16-18 HOLE (4) 2797 D STD 6.45 .63 1.63 3.25 5/16-18 HOLE (4) 2798 D STD 6.45 M30x1.5 LEFT 1.25 3.25 5/16-18 HOLE (4) 2799 D STD 6.45 .75 1.63 3.25 5/16-18 HOLE (4) 2801 D STD 6.45 .75 1.50 3.81 3/8-16 HOLE (4) 2802 D STD 6.45 .75 2.12 3.81 3/8-16 HOLE (4) 2811 D STD 6.45 M30x2.0 LEFT 1.20 3.81 3/8-16 HOLE (4) 2821 D REV 7.40 M30x1.5 RIGHT 1.69 3.25 5/16-18 HOLE (4) 2822 D REV 7.40 M30x1.5 RIGHT 1.21 3.25 5/16-18 HOLE (4) 2828 D STD 7.40 .75 1.50 6.00 5/16-18 HOLE (6) Fan Clutch Specification Chart MODEL DRAWING TYPE ROTATION (1) A OVERALL DIA. B PILOT DIA. OR THREAD SIZE C FAN MOUNT HEIGHT D FAN BOLT CIRCLE BOLT/NUT THREADS 5 & 6 Import Non-Thermal & Std Thermal Heavy Duty Severe Duty & Truck Fan Drive A B C D 8 (1) STD = Clockwise rotation when looking at engine from radiator. REV = Counter clockwise rotation when looking at engine from radiator. * Includes 5/8 3/4 reducer bushing. ** Stepped pilot. *** Includes 15mm 19mm reducer bushing. FAN CLUTCHESSpecification Chart FAN CLUTCHES 2830 D STD 7.40 1-1/4-16 LEFT 1.20 6.00 5/16-18 HOLE (6) 2831 D REV 7.40 .75 1.76 6.00 M8x1.25 HOLE (6) 2832 D REV 7.40 .75 1.76 6.00 M8x1.25 HOLE (6) 2833 D STD 7.40 1-1/4-16 LEFT 1.20 6.00 5/16-18 HOLE (6) 2834 D STD 7.40 M30x2.0 LEFT 1.21 6.00 5/16-18 HOLE (6) 2835 D REV 7.40 1-1/4-18 RIGHT 1.22 6.00 5/16-18 HOLE (6) 2836 D REV 7.40 M36x2.0 RIGHT 2.42 3.25 5/16-18 HOLE (4) 2837 D REV 7.40 1-1/4-18 RIGHT 2.42 3.25 5/16-18 HOLE (4) 2838 D REV 7.40 1-1/4-18 RIGHT 1.20 3.25 5/16-18 HOLE (4) 2839 D REV 7.40 .75 1.75 3.81 M8x1.25 HOLE (4) 2840 D REV 7.40 M36x2.0 RIGHT 1.75 3.81 M8x1.25 HOLE (4) 2841 C REV 7.23 M30x1.5 RIGHT 0.60 3.81 M8x1.25 HOLE (4) 2842 D STD 7.40 M30x1.5 LEFT 1.21 3.25 5/16-18 HOLE (4) 2843 D REV 7.40 M36x2.0 RIGHT 1.75 3.81 M8x1.25 HOLE (4) 2844 D STD 7.40 M30x2.0 LEFT 2.07 6.00 5/16-18 HOLE (6) 2846 D STD 7.40 M30x2.0 LEFT 1.70 6.00 5/16-18 HOLE (6) 2847 D STD 7.40 M30x2.0 LEFT 2.07 6.00 5/16-18 HOLE (6) 2850 D REV 7.40 M36x2.0 RIGHT 1.32 3.81 M8x1.25 HOLE (4) 2871 D STD 7.40 M30x2.0 LEFT 1.21 6.00 5/16-18 HOLE (6) 2872 D STD 7.40 .75 1.50 6.00 5/16-18 HOLE (6) 2881 D STD 7.40 M30x2.0 LEFT 1.70 6.00 5/16-18 HOLE (6) 2900 C REV 6.45 M30x1.5 RIGHT 2.20 3.25 5/16-18 HOLE (4) 2901 D REV 6.45 M30x1.5 RIGHT 2.20 3.25 5/16-18 HOLE (4) 2902 D REV 6.45 M30x1.5 RIGHT 2.60 3.25 5/16-18 HOLE (4) 2904 D REV 6.45 M30x1.5 RIGHT 1.25 3.25 M6x1.0 HOLE (4) 2916 D REV 6.45 M30x1.5 RIGHT 2.42 3.25 5/16-18 HOLE (4) 2961 D REV 6.45 M30x1.5 RIGHT 1.25 3.25 5/16-18 HOLE (4) 2981 D STD 6.45 M30x2.0 LEFT 2.07 3.25 M10x1.5 HOLE (4) 2986 D REV 6.45 M30x1.5 RIGHT 1.75 3.25 M10x1.5 HOLE (4) 3200 D REV 7.48 M30x1.5 RIGHT 1.87 3.81 M8x 1.25 x (4) 3201 D REV 7.48 M30x1.5 RIGHT 1.54 3.81 M8x 1.25 x (4) 3261 D REV 7.35 M40 x 2.0 RIGHT 1.88 5.00 5/16-18 HOLE (6) 3262 D REV 7.35 M40 x 2.0 RIGHT 1.88 5.00 5/16-18 HOLE (6) 5 & 6 Import Non-Thermal & Std Thermal Heavy Duty Severe Duty & Truck Fan Drive Fan Clutch Specification Chart MODEL DRAWING TYPE ROTATION (1) A OVERALL DIA. B PILOT DIA. OR THREAD SIZE C FAN MOUNT HEIGHT D FAN BOLT CIRCLE BOLT/NUT THREADS A B C D 9 FAN CLUTCHES/FAN BLADESApplication Guide FAN CLUTCHES ACURA SLX 99-98 V6 3.5 STD 2672 97-96 V6 3.2 STD 2670 AMC CARS AMBASSADOR & MATADOR 74-71 V8 401 6.6 STD INCLUDES BROUGHAM 2705 1705 78-70 V8 360 5.9 STD INCLUDES BROUGHAM AND SST 2705 1705 78-70 V8 304 5.0 STD INCLUDES BROUGHAM AND DPL 2705 1705 78-71 L6 258 4.2 STD 2705 1705 74-66 L6 232 3.8 STD INCLUDES 880 AND DPL MODELS 2705 1705 CONCORD 79-78 V8 304 5.0 STD 2705 1705 83-81 L6 258 4.2 REV 2723 83-78 L6 258 4.2 STD 2705 1705 79-78 L6 232 3.8 STD 2705 1705 83 L4 151 2.5(B) REV 2622 83-80 L4 150 2.5(U) STD 2705 1705 79-78 L4 121 2.0 STD 2705 1705 EAGLE 87-81 L6 258 4.2 REV 2723 87-80 L6 258 4.2 STD 2705 1705 83-80 L4 151 2.5(B) STD 2705 1705 83 L4 150 2.5(U) REV 2622 GREMLIN 76-75 V8 304 5.0 STD 2705 1705 78-71 L6 258 4.2 STD 2705 1705 78-70 L6 232 3.8 STD 2705 1705 78-77 L4 121 2.0 STD 2705 1705 HORNET 73-71 V8 360 5.9 STD 2705 1705 77-71 V8 304 5.0 STD 2705 1705 77-71 L6 258 4.2 STD 2705 1705 77-70 L6 232 3.8 STD 2705 1705 JAVELIN 74-72 V8 401 6.6 STD 2705 1705 74-70 V8 360 5.9 STD 2705 1705 74-71 V8 304 5.0 STD 2705 1705 74-71 L6 258 4.2 STD 2705 1705 74-68 L6 232 3.8 STD 2705 1705 PACER 79-78 V8 304 5.0 STD 2705 1705 80-75 L6 258 4.2 STD 2705 1705 78-75 L6 232 3.8 STD 2705 1705 SPIRIT & AMX 79-78 V8 304 5.0 STD 2705 1705 83-81 L6 258 4.2 REV 2723 83-79 L6 258 4.2 STD 2705 1705 79 L6 232 3.8 STD 2705 1705 A/C .....................AIR CONDITIONING H/D ....................HEAVY DUTY REV ROTATION .......COUNTER CLOCKWISE ROTATION FROM FRONT OF VEHICLE SD .......................SEVERE DUTY STD DUTY .............STANDARD DUTY STD ROTATION.......CLOCKWISE ROTATION FROM FRONT OF VEHICLE WHEN CHOICE IS GIVEN, BOLDED NUMBER INDICATES O.E. EQUIVALENT ENGINE FAN CLUTCH YEAR TYPE SIZE LITERS ROT APPLICATION THERMAL HEAVY DUTY SEVERE DUTY NON- THERMAL CLUTCH FAN 10 FAN CLUTCHES FAN CLUTCHES/FAN BLADESApplication Guide AMC CARS (Contd) SPIRIT & AMX (Contd) 83-80 L4 150 2.5 STD 2705 1705 79 L4 121 2.0 STD 2705 1705 AM GENERAL HUMMER 04-98 V8 395 6.5 REV FROM CHASSIS VIN 180136 98-97 V8 395 6.5 REV TO CHASSIS VIN 180136 2839 96-94 V8 395 6.5(Y) REV NON TURBO 2785 96 V8 395 6.5(Z) REV TURBO 93-92 V8 379 6.2 REV 96-95 V8 350 5.7 REV 2734 HUMMER H1 04-02 V8 395 6.5 REV HUMMER H2 04-03 V8 364 6.0 REV 2986 HUMMER H3 2006 L5 211 3.5 REV 2787 AUDI A4 01-96 V6 2.8 STD INCLUDING AVANT 2597 04-97 L4 1.8 STD INCLUDING CABRIOLET 2596 A4 QUATTRO 01-96 V6 2.8 STD INCLUDING AVANT 2597 04-97 L4 1.8 STD INCLUDING AVANT & CABRIOLET 2596 A6 04-00 V8 4.2 STD 01-98 V6 2.8 STD 2597 A6 QUATTRO 04-00 V8 4.2 STD 01-00 V6 2.8 STD INCLUDING AVANT 2597 02-00 V6 2.7 STD 2597 A8 QUATTRO 03-00 V8 4.2 STD ALLROAD QUATTRO 04-03 V8 4.2 STD 02-00 V6 2.7 STD 2597 S6 04-02 V8 4.2 STD AVANT 97-95 L5 2.2 STD S8 03-02 V8 4.2 STD V8 QUATTRO 94-92 V8 4.2 STD 91-90 V8 3.6 STD ENGINE FAN CLUTCH YEAR TYPE SIZE LITERS ROT APPLICATION THERMAL HEAVY DUTY SEVERE DUTY NON- THERMAL CLUTCH FAN A/C .....................AIR CONDITIONING H/D ....................HEAVY DUTY REV ROTATION .......COUNTER CLOCKWISE ROTATION FROM FRONT OF VEHICLE SD .......................SEVERE DUTY STD DUTY .............STANDARD DUTY STD ROTATION.......CLOCKWISE ROTATION FROM FRONT OF VEHICLE WHEN CHOICE IS GIVEN, BOLDED NUMBER INDICATES O.E. EQUIVALENT 11 FAN CLUTCHES/FAN BLADESApplication Guide FAN CLUTCHES BMW ALPINA ROADSTER 2003 V8 4.8 STD 318i 98-96 L4 1.9 STD M44 2591 95-91 L4 1.8 STD M42 2591 85 L4 1.8 STD M10 2591 318ic 97-96 L4 1.9 STD M44 2591 95-91 L4 1.8 STD M42 2591 318is 97-96 L4 1.8 STD M44 2591 95-91 L4 1.8 STD M42 2591 318ti 99-96 L4 1.9 STD M44 2591 95 L4 1.8 STD M42 2591 323ci 2000 L6 2.5 STD M52 2691 323i 00-99 L6 2.5 STD M52, INCLUDING SPORTWAGON 2691 323ic 99-98 L6 2.5 STD M52 2691 323is 99-98 L6 2.5 STD M52 2691 325 88-87 L6 2.7 STD M20 2591 325ci 03-01 L6 2.5 STD M54 2691 325e 87-85 L6 2.7 STD M20 2591 325i 03-01 L6 2.5 STD M54, INCLUDING SPORTWAGON 2691 95-92 L6 2.5 STD M50 2691 91-87 L6 2.5 STD M20 2591 325ic 95-94 L6 2.5 STD M50 2691 93-87 L6 2.5 STD M20 2591 325is 95-92 L6 2.5 STD M50 2691 91-87 L6 2.5 STD M20 2591 325ix 91-88 L6 2.5 STD M20 2591 325xi 03-01 L6 2.5 STD M54, INCLUDING SPORTWAGON 2691 A/C .....................AIR CONDITIONING H/D ....................HEAVY DUTY REV ROTATION .......COUNTER CLOCKWISE ROTATION FROM FRONT OF VEHICLE SD .......................SEVERE DUTY STD DUTY .............STANDARD DUTY STD ROTATION.......CLOCKWISE ROTATION FROM FRONT OF VEHICLE WHEN CHOICE IS GIVEN, BOLDED NUMBER INDICATES O.E. EQUIVALENT ENGINE FAN CLUTCH YEAR TYPE SIZE LITERS ROT APPLICATION THERMAL HEAVY DUTY SEVERE DUTY NON- THERMAL CLUTCH FAN 12 FAN CLUTCHES FAN CLUTCHES/FAN BLADESApplication Guide BMW (Contd) 328ci 2000 L6 2.8 STD M52 2691 328i 00-96 L6 2.8 STD M52 2691 328ic 99-97 L6 2.8 STD M52 2691 328is 99-96 L6 2.8 STD M52 2691 330ci 03-01 L6 3.0 STD M54 2691 330i 03-01 L6 3.0 STD M54 2691 330xi 03-01 L6 3.0 STD M54 2691 524td 86-85 L6 2.4 STD M21 525i 03-01 L6 2.5 STD M54 2691 95-91 L6 2.5 STD M50 2691 90-89 L6 2.5 STD M20 2591 525it 95-93 L6 2.5 STD M50 2691 528e 88-85 L6 2.7 STD M20 2591 528i 00-97 L6 2.8 STD M52 2691 528it 00-99 L6 2.8 STD M52 2691 530i 03-01 L6 3.0 STD M54 2691 95-94 V8 3.0 STD M60, Sport Wagon 2593 535i 93-89 L6 3.5 STD M30 2594 88-85 L6 3.5 STD M30 2591 535is 88 L6 3.5 STD M30 2591 540i 03-01 V8 4.4 STD M62, SPORT WAGON 2593 03-97 V8 4.4 STD M62 2593 98-97 V8 4.4 STD M62, SPORT 2593 95-94 V8 4.0 STD M60 2593 540it 00-99 V8 4.4 STD M62 2593 ENGINE FAN CLUTCH YEAR TYPE SIZE LITERS ROT APPLICATION THERMAL HEAVY DUTY SEVERE DUTY NON- THERMAL CLUTCH FAN A/C .....................AIR CONDITIONING H/D ....................HEAVY DUTY REV ROTATION .......COUNTER CLOCKWISE ROTATION FROM FRONT OF VEHICLE SD .......................SEVERE DUTY STD DUTY .............STANDARD DUTY STD ROTATION.......CLOCKWISE ROTATION FROM FRONT OF VEHICLE WHEN CHOICE IS GIVEN, BOLDED NUMBER INDICATES O.E. EQUIVALENT 13 FAN CLUTCHES/FAN BLADESApplication Guide FAN CLUTCHES BMW (Contd) 635csi 89-85 L6 3.5 STD M30 2591 735i 92-87 L6 3.5 STD M30 2594 86-85 L6 3.5 STD M30 735il 92-88 L6 3.5 STD M30 2594 740i 01-97 V8 4.4 STD M62 2593 95-93 V8 4.0 STD M60 2593 740il 01-96 V8 4.4 STD M62 2593 95-93 V8 4.0 STD M60 2593 745i 2003 V8 4.4 STD N62, FROM 3/03 03-02 V8 4.4 STD N62, TO 3/03 2595 745li 2003 V8 4.4 STD N62, FROM 3/03 03-02 V8 4.4 STD N62, TO 3/03 2595 750il 01-95 V12 5.4 STD M73 2593 94-88 V12 5.0 STD M70 2593 760li 2003 V12 6.0 STD N73 FROM 3/03 2003 V12 6.0 STD N73 TO 3/03 2595 840ci 97-96 V8 4.4 STD M62 2593 95-94 V8 4.0 STD M60 2593 850ci 97-95 V12 5.4 STD M73 2593 94-93 V12 5.0 STD M70 2593 850csi 95-94 V12 5.6 STD S70 2593 850i 92-91 V12 5.0 STD M70 2593 87 L6 3.5 STD M30 2591 87-86 L6 3.5 STD M30 2691 M3 03-01 L6 3.2 STD S54 2594 99-96 L6 3.2 STD S52 2691 95 L6 3.0 STD S50 2691 91-88 L4 2.3 STD S14 M5 03-00 V8 5.0 STD S62 93-91 L6 3.6 STD S38 2594 88 L6 3.5 STD S38 2591 A/C .....................AIR CONDITIONING H/D ....................HEAVY DUTY REV ROTATION .......COUNTER CLOCKWISE ROTATION FROM FRONT OF VEHICLE SD .......................SEVERE DUTY STD DUTY .............STANDARD DUTY STD ROTATION.......CLOCKWISE ROTATION FROM FRONT OF VEHICLE WHEN CHOICE IS GIVEN, BOLDED NUMBER INDICATES O.E. EQUIVALENT ENGINE FAN CLUTCH YEAR TYPE SIZE LITERS ROT APPLICATION THERMAL HEAVY DUTY SEVERE DUTY NON- THERMAL CLUTCH FAN 14 FAN CLUTCHES FAN CLUTCHES/FAN BLADESApplication Guide BMW (Contd) M6 88-87 L6 3.5 STD S38 2591 X5 03-02 V8 4.6 STD M62, is MODEL 2595 03-00 V8 4.4 STD M62 2595 03-01 L6 3.0 STD M54 2691 Z3 02-01 L6 3.2 STD S54, M COUPE 2594 00-99 L6 3.2 STD S52, M COUPE 2691 02-01 L6 3.2 STD S54, M ROADSTER 2594 00-98 L6 3.2 STD S52, M ROADSTER 2691 02-01 L6 3.0 STD M54, COUPE 2691 02-01 L6 3.0 STD M54, ROADSTER 2691 00-97 L6 2.8 STD M52, ROADSTER 2691 00-99 L6 2.8 STD M52, COUPE 2691 02-01 L6 2.5 STD M54, ROADSTER 2691 00-99 L6 2.5 STD M52, ROADSTER 2691 98-96 L4 1.9 STD M44, ROADSTER 2591 Z4 2003 L6 3.0 STD M54, ROADSTER 2003 L6 2.5 STD M54, ROADSTER Z8 03-00 V8 5.0 STD S62 BUICK CENTURY 74 V8 455 7.5 STD 2707 1707 73-71 V8 455 7.5 STD 2705 1705 77-73 V8 350 5.7 STD 2707 1707 81-75 V6 231 3.8 STD 2707 1707 3619 ELECTRA 76-64 V8 455 7.5 STD W/STD FAN CLUTCH 2705 1705 70 V8 425 6.9 STD 2705 1705 79-77 V8 403 6.6 STD W/STD FAN CLUTCH 2705 1705 79-77 V8 403 6.6 STD W/ H/D FAN CLUTCH 2747 2797 80 V8 350(X) 5.7(X) STD 2707 1707 79-78 V8 350(X) 5.7(X) STD 2705 1705 85-80 V8 350(N) 5.7(N) STD DIESEL W/STD FAN CLUTCH 2705 1705 85-80 V8 350(N) 5.7(N) STD DIESEL W/ H/D FAN CLUTCH 2747 2797 81-73 V8 350 5.7 STD W/ H/D FAN CLUTCH, EXC. 350(X) 2747 2797 81 V8 350 5.7 STD W/STD FAN CLUTCH, EXC. 350(X) 2707 1707 80-73 V8 350 5.7 STD W/STD FAN CLUTCH, EXC. 350(X) 2705 1705 84-81 V8 307 5.0 STD W/STD FAN CLUTCH 2705 1705 84-81 V8 307 5.0 STD W/ H/D FAN CLUTCH 2747 2797 81 V8 301 4.9 STD 2747 2797 84-80 V6 252 4.1 STD 2707 1707 83-80 V6 231 3.8 STD 2707 1707 3619 ENGINE FAN CLUTCH YEAR TYPE SIZE LITERS ROT APPLICATION THERMAL HEAVY DUTY SEVERE DUTY NON- THERMAL CLUTCH FAN A/C .....................AIR CONDITIONING H/D ....................HEAVY DUTY REV ROTATION .......COUNTER CLOCKWISE ROTATION FROM FRONT OF VEHICLE SD .......................SEVERE DUTY STD DUTY .............STANDARD DUTY STD ROTATION.......CLOCKWISE ROTATION FROM FRONT OF VEHICLE WHEN CHOICE IS GIVEN, BOLDED NUMBER INDICATES O.E. EQUIVALENT 15 FAN CLUTCHES/FAN BLADESApplication Guide FAN CLUTCHES BUICK (Contd) ESTATE WAGON, LeSABRE & ROADMASTER 76-64 V8 455 7.5 STD W/STD FAN CLUTCH 2705 1705 70 V8 425 6.9 STD 2705 1705 79-77 V8 403 6.6 STD W/STD FAN CLUTCH 2705 1705 79-77 V8 403 6.6 STD W/ H/D FAN CLUTCH 2747 2797 78 V8 400 6.6 STD 2747 80-78 V8 350(X) 5.7(X) STD W/ A/C, HDC 2707 1707 80-78 V8 350(X) 5.7(X) STD W/O A/C 2705 1705 85-80 V8 350(N) 5.7(N) STD DIESEL W/ H/D FAN CLUTCH 2747 2797 96-94 V8 350 5.7 STD 2747 2797 93-92 V8 350 5.7 REV W/ H/D FAN CLUTCH 2734 81 V8 350 5.7 STD W/STD FAN CLUTCH 2707 1707 80-69 V8 350 5.7 STD W/STD FAN CLUTCH, EXC. 350(X) 2705 1705 80-69 V8 350 5.7 STD W/ H/D FAN CLUTCH, EXC. 350(X) 2747 91 V8 307 5.0 REV W/ H/D FAN CLUTCH 2784 90-81 V8 307 5.0 STD W/STD FAN CLUTCH 2705 1705 90-81 V8 307 5.0 STD W/ H/D FAN CLUTCH 2747 82-78 V8 305 5.0 STD W/STD FAN CLUTCH 2705 1705 82-78 V8 305 5.0 STD W/ H/D FAN CLUTCH 2747 81-77 V8 301 4.9 STD W/STD FAN CLUTCH 2707 1707 81-77 V8 301 4.9 STD W/ H/D FAN CLUTCH 2747 82-81 V8 267 4.4 STD W/STD FAN CLUTCH 2705 1705 82-81 V8 267 4.4 STD W/ H/D FAN CLUTCH 2747 84-81 V6 252 4.1 STD 2707 1707 85-77 V6 231 3.8 STD INC. TURBO 2707 1707 3619 78 V6 196 3.2 STD 2707 1707 3619 RAINIER 07-06 V6 256 4.2 REV W/ ELECTRONIC FAN CLUTCH 3201 05-04 V8 325 5.3 REV W/ ELECTRONIC FAN CLUTCH 3200 05-04 V6 256 4.2 REV W/ ELECTRONIC FAN CLUTCH 3200 REGAL 73-72 V8 455 7.5 STD 2705 1705 77 V8 403 6.6 STD W/STD FAN CLUTCH 2705 1705 77 V8 403 6.6 STD W/ H/D FAN CLUTCH 2747 85-80 V8 350(N) 5.7(N) STD DIESEL W/ H/D FAN CLUTCH 2747 2797 85-80 V8 350(N) 5.7(N) STD DIESEL W/STD FAN CLUTCH 2705 1705 80-78 V8 350 5.7 STD W/STD FAN CLUTCH 2707 1707 80-76 V8 350 5.7 STD W/ H/D FAN CLUTCH 2747 77-76 V8 350 5.7 STD W/STD FAN CLUTCH 2705 1705 87-85 V8 307 5.0 STD W/STD FAN CLUTCH 2705 1705 87-85 V8 307 5.0 STD W/ H/D FAN CLUTCH 2747 87-82 V8 305 5.0 STD W/STD FAN CLUTCH 2705 1705 87-78 V8 305 5.0 STD W/ H/D FAN CLUTCH 2747 81-78 V8 305 5.0 STD W/STD FAN CLUTCH 2707 1707 81-79 V8 301 4.9 STD 2747 82-81 V8 267 4.4 STD W/STD FAN CLUTCH 2707 1707 82-81 V8 267 4.4 STD W/ H/D FAN CLUTCH 2747 81-80 V8 265(S) 4.3(S) STD W/ H/D FAN CLUTCH 2747 81 V8 265(S) 4.3(S) STD W/ A/C & STD FAN CLUTCH 2705 1705 81 V8 265(S) 4.3(S) STD W/O A/C, W/STD FAN CLUTCH 2707 1707 A/C .....................AIR CONDITIONING H/D ....................HEAVY DUTY REV ROTATION .......COUNTER CLOCKWISE ROTATION FROM FRONT OF VEHICLE SD .......................SEVERE DUTY STD DUTY .............STANDARD DUTY STD ROTATION.......CLOCKWISE ROTATION FROM FRONT OF VEHICLE WHEN CHOICE IS GIVEN, BOLDED NUMBER INDICATES O.E. EQUIVALENT ENGINE FAN CLUTCH YEAR TYPE SIZE LITERS ROT APPLICATION THERMAL HEAVY DUTY SEVERE DUTY NON- THERMAL CLUTCH FAN 16 FAN CLUTCHES FAN CLUTCHES/FAN BLADESApplication Guide BUICK (Contd) REGAL (Contd) 84-82 V6 260(V) 4.3(V) REV DIESEL 84-82 V6 252 4.1(4) STD 2707 1707 87-75 V6 231 3.8 STD 2707 1707 3619 79-78 V6 196 3.2 STD 2707 1707 3619 RIVIERA 76-64 V8 455 7.5 STD W/STD FAN CLUTCH 2705 1705 70 V8 425 6.9 STD 2705 1705 80 V8 350(X) 5.7(X) STD 2707 1707 85-80 V8 350(N) 5.7(N) STD DIESEL W/STD FAN CLUTCH 2705 1705 85-80 V8 350(N) 5.7(N) STD DIESEL W/ H/D FAN CLUTCH 2747 2797 80-74 V8 350 5.7 STD W/STD FAN CLUTCH 2705 1705 80-74 V8 350 5.7 STD W/ H/D FAN CLUTCH 2747 2797 85-80 V8 307 5.0 STD W/STD FAN CLUTCH 2705 1705 85-80 V8 307 5.0 STD W/ H/D FAN CLUTCH 2747 2797 84-81 V6 252 4.1 STD 2707 1707 85-79 V6 231 3.8 STD 2707 1707 3619 SKYHAWK 81-75 V6 231 3.8 STD W/STD FAN CLUTCH 2708 SKYLARK 73-72 V8 455 7.5 STD 2705 1705 69-67 V8 400 6.6 STD 2705 1705 79-76 V8 350 5.7 STD W/STD FAN CLUTCH 2705 1705 79-76 V8 350 5.7 STD W/ H/D FAN CLUTCH 2747 67-66 V8 340 5.5 STD 2707 1707 79-77 V8 305 5.0 STD 2705 1705 77 V8 301 4.9 STD 2747 67-64 V8 300 4.9 STD 2707 1707 76 V6 260 4.3 STD 2747 71-69 L6 250 4.0 STD 2705 1705 3618 68 L6 250 4.0 STD 2710 1710 3618 79-77 V6 231 3.8 STD 2707 1707 3619 67-65 V6 225 3.6 STD 2707 1707 3618 SPECIAL 66-65 V8 401 6.6 STD 2705 1705 69-67 V8 400 6.6 STD 2705 1705 72-68 V8 350 5.7 STD 2707 1707 67-66 V8 340 5.5 STD 2707 1707 67-64 V8 300 4.9 STD 2707 1707 71-69 L6 250 4.0 STD 2705 1705 3618 68 L6 250 4.0 STD 2710 1710 3618 67-65 V6 225 3.6 STD 2707 1707 3618 CADILLAC BROUGHAM 85-84 V8 350(N) 5.7 STD DIESEL 2707 1707 82 V8 350(N) 5.7 STD DIESEL 2731 92-90 V8 350 5.7 REV 2734 2784 92-91 V8 307 5.0 REV 2734 ENGINE FAN CLUTCH YEAR TYPE SIZE LITERS ROT APPLICATION THERMAL HEAVY DUTY SEVERE DUTY NON- THERMAL CLUTCH FAN A/C .....................AIR CONDITIONING H/D ....................HEAVY DUTY REV ROTATION .......COUNTER CLOCKWISE ROTATION FROM FRONT OF VEHICLE SD .......................SEVERE DUTY STD DUTY .............STANDARD DUTY STD ROTATION.......CLOCKWISE ROTATION FROM FRONT OF VEHICLE WHEN CHOICE IS GIVEN, BOLDED NUMBER INDICATES O.E. EQUIVALENT 17 FAN CLUTCHES/FAN BLADESApplication Guide FAN CLUTCHES CADILLAC (Contd) BROUGHAM (Contd) 90-86 V8 307 5.0 STD W/ EXTRA CAPACITY COOLING 2706 1706 93 V8 301 4.9 REV W/ H/D FAN CLUTCH 2734 2784 CALAIS 76-75 V8 500 8.0 STD 2747 74-68 V8 472 7.8 STD 2747 67-65 V8 429 7.0 STD 2747 COMMERCIAL CHASSIS & FLEETWOOD LIMOUSINE 76 V8 500 8.0 STD 2747 79-77 V8 425 7.0 STD 2731 84-80 V8 368 6.0 STD 2731 85-83 V8 350(N) 5.7(N) STD DIESEL 2705 1705 94 V8 350 5.7 STD H/D COOLING 2747 2797 93 V8 350 5.7 REV H/D COOLING 2784 85-84 V8 350 5.7 REV DIESEL 2705 1705 85-84 V8 250 4.1 STD 2707 1707 DeVILLE & COUPE DeVILLE 76-75 V8 500 8.0 STD W/ H/D FAN CLUTCH 2747 74-68 V8 472 7.8 STD 2747 67-65 V8 429 7.0 STD 2747 79-77 V8 425 7.0 STD 2731 78-77 V8 425 7.0 STD DELEGANCE W/ H/D FAN CLUTCH 2731 84 V8 368 6.0 STD 2731 81-80 V8 368 6.0 STD 2731 85-83 V8 350(N) 5.7(N) STD DIESEL 2705 1705 82-79 V8 350(N) 5.7(N) STD DIESEL 2731 92-90 V8 350 5.7 REV H/D COOLING 2734 2784 92-91 V8 305 5.0(3) REV 2734 2784 90-86 V8 305 5.0(9) STD 2707 1707 90-86 V8 307 5.0(Y) STD 2706 1706 82-80 V6 252 4.1 STD 2731 85-82 V8 250 4.1 STD 2707 1707 ESCALADE 05-02 V8 364 6.0 REV 2986 00-99 V8 350 5.7 REV 2986 05-02 V8 323 5.3 REV 2986 ELDORADO 78-70 V8 500 8.0 STD 2747 69-65 V8 429 7.0 STD 2747 78-77 V8 425 7.0 STD 2747 81-80 V8 368 6.0 STD 85-82 V8 350(N) 5.7(N) STD DIESEL 2705 1705 81-80 V8 350(N) 5.7(N) STD DIESEL 2731 79 V8 350(N) 5.7(N) STD DIESEL 2705 1705 81-80 V8 350 5.7 STD 2731 79 V8 350 5.7 STD 2705 1705 82-81 V6 252 4.1 STD t 2707 1707 85-82 V8 250 4.1 STD 2747 A/C .....................AIR CONDITIONING H/D ....................HEAVY DUTY REV ROTATION .......COUNTER CLOCKWISE ROTATION FROM FRONT OF VEHICLE SD .......................SEVERE DUTY STD DUTY .............STANDARD DUTY STD ROTATION.......CLOCKWISE ROTATION FROM FRONT OF VEHICLE WHEN CHOICE IS GIVEN, BOLDED NUMBER INDICATES O.E. EQUIVALENT ENGINE FAN CLUTCH YEAR TYPE SIZE LITERS ROT APPLICATION THERMAL HEAVY DUTY SEVERE DUTY NON- THERMAL CLUTCH FAN 18 FAN CLUTCHES FAN CLUTCHES/FAN BLADESApplication Guide CADILLAC (Contd) FLEETWOOD BROUGHAM & FLEETWOOD 75 76-75 V8 500 8.0 STD W/ H/D FAN CLUTCH 2747 74-68 V8 472 7.8 STD 2747 79-77 V8 425 7.0 STD 2731 84-80 V8 368 6.0 STD 2731 85-83 V8 350(N) 5.7(N) STD DIESEL 2705 1705 82 V8 350(N) 5.7(N) STD DIESEL 2731 96-94 V8 350 5.7 STD H/D COOLING 2747 2797 93 V8 350 5.7 REV H/D COOLING 2784 92-90 V8 350 5.7 REV 2734 2784 92-91 V8 307 5.0 REV 2734 2784 90-86 V8 307 5.0 STD 2707 1707 93 V8 301 4.9 REV W/ H/D FAN CLUTCH 2734 2784 82-80 V6 252 4.1 STD 2731 85-82 V8 250 4.1 STD 2707 1707 79 V8 425 7.0 STD 2731 81-80 V8 368 6.0 STD 2731 81-80 V6 252 4.1 STD 2731 SEDAN & SEDAN DeVILLE 79-78 V8 425 7.0 STD 2731 SEVILLE 81-80 V8 368 6.0 STD 85-82 V8 350(R) 5.7(R) STD DIESEL 2705 1705 81-80 V8 350(R) 5.7(R) STD DIESEL 2731 79-78 V8 350(R) 5.7(R) STD DIESEL 2705 1705 80 V8 350 5.7 STD 2731 79-76 V8 350 5.7 STD 2705 1705 82-81 V6 252 4.1 STD 2707 1707 85-82 V8 250 4.1 STD 2747 SRX 07-04 V8 281 4.6 STD W/ TRAILER TOW PACKAGE 2981 07-04 V8 281 4.6 STD W/O TRAILER TOW PACKAGE CHEVROLET CARS CAMARO 69 V8 427 7.0 STD W/18 FAN 2705 1705 69 V8 427 7.0 STD W/17 FAN 2705 1705 68-67 V8 427 7.0 STD W/17 FAN 2710 1710 68-67 V8 427 7.0 STD W/18 FAN 2710 1710 72-69 V8 396 6.5 STD W/17 FAN 2705 1705 72-69 V8 396 6.5 STD W/18 FAN 2705 1705 68-67 V8 396 6.5 STD W/17 FAN 2710 1710 68-67 V8 396 6.5 STD W/18 FAN 2710 1710 81-80 V8 350 5.7 STD W/STD FAN CLUTCH 2707 1707 81-67 V8 350 5.7 STD W/ H/D FAN CLUTCH 2747 79-67 V8 350 5.7 STD W/STD FAN CLUTCH 2705 1705 69-67 V8 327 5.4 STD W/STD FAN CLUTCH 2705 1705 69-67 V8 327 5.4 STD W/ H/D FAN CLUTCH 2747 73-71 V8 307 5.0 STD W/ H/D FAN CLUTCH 2747 73-71 V8 307 5.0 STD W/STD FAN CLUTCH 2705 1705 ENGINE FAN CLUTCH YEAR TYPE SIZE LITERS ROT APPLICATION THERMAL HEAVY DUTY SEVERE DUTY NON- THERMAL CLUTCH FAN A/C .....................AIR CONDITIONING H/D ....................HEAVY DUTY REV ROTATION .......COUNTER CLOCKWISE ROTATION FROM FRONT OF VEHICLE SD .......................SEVERE DUTY STD DUTY .............STANDARD DUTY STD ROTATION.......CLOCKWISE ROTATION FROM FRONT OF VEHICLE WHEN CHOICE IS GIVEN, BOLDED NUMBER INDICATES O.E. EQUIVALENT 19 FAN CLUTCHES/FAN BLADESApplication Guide FAN CLUTCHES CHEVROLET CARS (Contd) CAMARO (Contd) 85-84 V8 305 5.0 STD W/O A/C W/3 BLADE FAN 2705 1705 85-82 V8 305 5.0 STD W/STD FAN CLUTCH W/O 3 BLADE FAN 2705 1705 86-76 V8 305 5.0 STD W/ H/D FAN CLUTCH 2747 81-80 V8 305 5.0 STD W/STD FAN CLUTCH 2707 1707 79-76 V8 305 5.0 STD W/STD FAN CLUTCH 2705 1705 69-67 V8 302 5.0 STD W/STD FAN CLUTCH 2705 1705 69-67 V8 302 5.0 STD W/ H/D FAN CLUTCH 2747 80 V8 301 4.9 STD 2747 2797 81-80 V8 267 4.4 STD 2747 79-67 L6 250 4.1 STD 2705 1705 3618 81-80 V6 231(A) 3.8(A) STD 2707 1707 3618 70-67 L6 230 3.8 STD 2705 1705 3618 81-80 V6 229(K) 3.8(K) STD 2747 84 V6 173 2.8 STD W/ 3 BLADE FAN 2705 1705 3618 83-82 V6 173 2.8 STD 2705 1705 3618 85-83 L4 151 2.5 STD 2705 1705 82 L4 151 2.5 STD W/HDC 2707 1707 82 L4 151 2.5 STD W/O HDC 2705 1705 CAPRICE & IMPALA (INCLUDING WAGONS) 76-70 V8 454 7.4 STD 2747 65-61 V8 409 6.7 STD W/18 FAN 2710 1710 65-61 V8 409 6.7 STD W/17 FAN 2710 1710 76-70 V8 400 6.6 STD W/ H/D FAN CLUTCH 2747 85-80 V8 350(N) 5.7(N) STD DIESEL W/STD FAN CLUTCH 2705 1705 85-80 V8 350(N) 5.7(N) STD DIESEL W/ H/D FAN CLUTCH 2747 2797 96-94 V8 350 5.7 STD W/ H/D FAN CLUTCH 2747 2797 93-91 V8 350 5.7 REV W/ H/D FAN CLUTCH (INC. POLICE, TAXI) 2784 81-72 V8 350 5.7 STD W/ H/D FAN CLUTCH 2747 2797 81-69 V8 350 5.7 STD W/STD FAN CLUTCH 2705 1705 61-59 V8 348 5.7 STD W/18 FAN 2710 1710 61-59 V8 348 5.7 STD W/17 FAN 2710 1710 69-63 V8 327 5.4 STD W/18 FAN 2710 1710 69-63 V8 327 5.4 STD W/17 FAN 2710 1710 90-86 V8 307 5.0 STD W/STD FAN CLUTCH 2705 1705 90-86 V8 307 5.0 STD W/ H/D FAN CLUTCH 2747 93-89 V8 305 5.0 REV W/ H/D FAN CLUTCH (INC. POLICE, TAXI) 2784 90-89 V8 305 5.0 REV W/ H/D FAN CLUTCH (INC. POLICE, TAXI) 2734 88-77 V8 305 5.0 STD W/ H/D FAN CLUTCH 2747 87-82 V8 305 5.0 STD W/STD FAN CLUTCH 2705 1705 81-80 V8 305 5.0 STD W/STD FAN CLUTCH 2707 1707 79-77 V8 305 5.0 STD W/STD FAN CLUTCH 2705 1705 67-59 V8 283 4.6 STD W/18 FAN 2710 1710 67-59 V8 283 4.6 STD W/17 FAN 2710 1710 82-80 V8 267 4.4 STD W/ A/C & H/D FAN CLUTCH 2747 82 V8 267 4.4 STD W/STD FAN CLUTCH 2705 1705 81-80 V8 267 4.4 STD W/ A/C & STD FAN CLUTCH 2705 1705 81-80 V8 267 4.4 STD W/O A/C & STD FAN CLUTCH 2707 1707 94 V6 265 4.3 STD W/ H/D FAN CLUTCH 2747 2797 96-95 V6 262 4.3 REV W/ H/D COOLING 2747 2797 93 V6 262 4.3 REV W/ H/D FAN CLUTCH (INC. TAXI) 2734 A/C .....................AIR CONDITIONING H/D ....................HEAVY DUTY REV ROTATION .......COUNTER CLOCKWISE ROTATION FROM FRONT OF VEHICLE SD .......................SEVERE DUTY STD DUTY .............STANDARD DUTY STD ROTATION.......CLOCKWISE ROTATION FROM FRONT OF VEHICLE WHEN CHOICE IS GIVEN, BOLDED NUMBER INDICATES O.E. EQUIVALENT ENGINE FAN CLUTCH YEAR TYPE SIZE LITERS ROT APPLICATION THERMAL HEAVY DUTY SEVERE DUTY NON- THERMAL CLUTCH FAN 20 FAN CLUTCHES FAN CLUTCHES/FAN BLADESApplication Guide CHEVROLET CARS (Contd) CAPRICE & IMPALA (INCLUDING WAGONS) (Contd) 92 V6 262 4.3 REV W/ H/D FAN CLUTCH 2734 91-89 V6 262 4.3 REV W/ H/D FAN CLUTCH (INC. TAXI) 2734 88-85 V6 262 4.3 STD W/STD FAN CLUTCH 2705 1705 88-85 V6 262 4.3 STD W/ H/D FAN CLUTCH 2747 72-69 L6 250 4.1 STD W/18 FAN 2705 1705 3618 72-69 L6 250 4.1 STD W/17 FAN 2705 1705 68-66 L6 250 4.1 STD W/17 FAN 2710 1710 68-66 L6 250 4.1 STD W/18 FAN 2710 1710 3618 84-80 V6 231(A) 3.8(A) STD W/O A/C & STD FAN CLUTCH 2707 1707 3619 84-82 V6 229(K) 3.8(K) STD W/STD FAN CLUTCH 2705 1705 3619 84-80 V6 229(K) 3.8(K) STD W/ H/D FAN CLUTCH 2747 81-80 V6 229(K) 3.8(K) STD W/STD FAN CLUTCH 2707 1707 3619 CHEVELLE, EL CAMINO, MALIBU & MONTE CARLO 76-71 V8 454 7.4 STD 2705 1705 76-70 V8 400 6.6 STD 2747 72-69 V8 396 6.5 STD 2705 1705 68-65 V8 396 6.5 STD 2710 1710 81-78 V8 350 5.7 STD W/O A/C & STD FAN CLUTCH 2707 1707 81-76 V8 350 5.7 STD W/ H/D FAN CLUTCH 2747 81-69 V8 350 5.7 STD W/ A/C & STD FAN CLUTCH W/18 FAN 2705 1705 81-69 V8 350 5.7 STD W/ A/C & STD FAN CLUTCH W/19 FAN 2705 1705 68-64 V8 327 5.4 STD W/18 FAN 2710 1710 68-64 V8 327 5.4 STD W/17 FAN 2710 1710 73-68 V8 307 5.0 STD 2705 1705 88-82 V8 305 5.0 STD W/STD FAN CLUTCH 2705 1705 88-78 V8 305 5.0 STD W/ H/D FAN CLUTCH 2747 2797 81-78 V8 305 5.0 STD W/O A/C & STD FAN CLUTCH 2707 1707 81-76 V8 305 5.0 STD W/ A/C & STD FAN CLUTCH 2705 1705 67-64 V8 283 4.6 STD W/18 FAN 2710 1710 67-64 V8 283 4.6 STD W/17 FAN 2710 1710 81-79 V8 267 4.4 STD W/O A/C & STD FAN CLUTCH 2707 1707 81-79 V8 267 4.4 STD W/ A/C & STD FAN CLUTCH 2705 1705 81-79 V8 267 4.4 STD W/ H/D FAN CLUTCH 2747 88-85 V6 262(Z) 4.3(Z) STD 2705 1705 83-82 V6 260(V) 4.3(V) REV DIESEL 77-69 L6 250 4.1 STD 2705 1705 3618 68-67 L6 250 4.1 STD 2710 1710 3618 81-78 V6 231 3.8 STD 2707 1707 3619 84-80 V6 229 3.8 STD W/ A/C & STD FAN CLUTCH 2705 1705 3619 81-80 V6 229 3.8 STD W/O A/C & STD FAN CLUTCH 2707 1707 3619 79-78 L6 200 3.3 STD W/O A/C OR W/MANUAL TRANS 2707 1707 3619 79-78 L6 200 3.3 STD W/ A/C OR W/AUTO TRANS 2705 1705 3619 CHEVETTE 87-77 L4 98 1.6 STD 2551 77-76 L4 85 1.4 STD 2551 CORVETTE 74-70 V8 454 7.4 STD W/O A/C STD FAN CLUTCH 2713 74-70 V8 454 7.4 STD W/ A/C H/D FAN CLUTCH 2799 ENGINE FAN CLUTCH YEAR TYPE SIZE LITERS ROT APPLICATION THERMAL HEAVY DUTY SEVERE DUTY NON- THERMAL CLUTCH FAN A/C .....................AIR CONDITIONING H/D ....................HEAVY DUTY REV ROTATION .......COUNTER CLOCKWISE ROTATION FROM FRONT OF VEHICLE SD .......................SEVERE DUTY STD DUTY .............STANDARD DUTY STD ROTATION.......CLOCKWISE ROTATION FROM FRONT OF VEHICLE WHEN CHOICE IS GIVEN, BOLDED NUMBER INDICATES O.E. EQUIVALENT 21 FAN CLUTCHES/FAN BLADESApplication Guide FAN CLUTCHES CHEVROLET CARS (Contd) CORVETTE (Contd) 69-66 V8 427 7.0 STD 2711 65 V8 396 6.6 STD 2711 82-79 V8 350 5.7 STD W/STD FAN CLUTCH & 18 FAN 2714 80-74 V8 350 5.7 STD W/ H/D FAN CLUTCH & 17 FAN 2741 80-74 V8 350 5.7 STD W/ H/D FAN CLUTCH & 18 FAN 2741 79-72 V8 350 5.7 STD W/STD FAN CLUTCH & 17 FAN 2711 71-69 V8 350 5.7 STD W/O A/C STD FAN CLUTCH & 17 FAN 2713 68-62 V8 327 5.4 STD W/STD FAN CLUTCH 2711 61-60 V8 283 4.6 STD W/STD FAN CLUTCH 2711 MONZA 75 V8 350 5.7 STD 2705 1705 78-76 V8 305 5.0 STD 2705 1705 76-75 V8 262 4.3 STD 2705 1705 80-78 V6 231 3.8 STD W/O A/C 2708 80-78 V6 231 3.8 STD W/ A/C 2705 1705 79-78 V6 196 3.2 STD 2705 1705 80-78 L4 151 2.5 STD 2705 1705 77-75 L4 140 2.3 STD 2705 1705 NOVA, CHEVY II 79-71 V8 350 5.7 STD 2705 1705 69 V8 327 5.4 STD 2705 1705 68-66 V8 327 5.4 STD 2710 1710 73-69 V8 307 5.0 STD 2705 1705 79-76 V8 305 5.0 STD 2705 1705 79-76 L6 250 4.1 STD 2705 1705 3618 VEGA 77-75 V8 305 5.0 STD 2705 1705 CHEVROLET & GMC TRUCKS LIGHT DUTY FULL-SIZE TRUCKS AND SUVS 06-01 V8 498 8.1 REV NEW BODY STYLES, EXCEPT ALLISON AUTO TRANS, MARKED GGL 2780 06-01 V8 498 8.1 REV NEW BODY STYLES, ALLISON AUTO TRANS, MARKED GCJ 2780 02-01 V8 498 8.1 REV CLASSIC BODY STYLES & H/D CAB CHASSIS, MARKED GFF 2786 00-88 V8 454 7.4 REV W/REV ROTATION FAN CLUTCH 2784 91-73 V8 454 7.4 STD W/STD. ROT. ROTATION FAN CLUTCH 2797 05-01 V8 400 6.6 REV TURBO DIESEL 2843 72-71 V8 400 6.6 STD W/STD FAN CLUTCH, GAS 2707 1707 80-73 V8 400 6.6 STD W/ H/D FAN CLUTCH, GAS 2797 70-68 V8 396 6.5 STD W/STD FAN CLUTCH 2707 1707 02-99 V8 399 6.5 (F) REV MARKED GDF, THREAD ON TYPE 2840 99-97 V8 399 6.5 (F) REV MARKED GCP, BOLT ON TYPE 2839 96-94 V8 399 6.5 REV TURBO DIESEL 2831 93-92 V8 399 6.5 REV TURBO DIESEL 2832 82 V8 379 6.2 STD DIESEL W /6 FAN BOLTS CLUTCH 2828 91-82 V8 379 6.2 STD DIESEL W/ 4 FAN BOLTS 2799 93-87 V8 379 6.2 REV DIESEL 2785 06 V8 368 6.0 REV 2780 06-02 V8 368 6.0 REV W/ A/C OR WITH TOWING PACKAGE 2986 A/C .....................AIR CONDITIONING H/D ....................HEAVY DUTY REV ROTATION .......COUNTER CLOCKWISE ROTATION FROM FRONT OF VEHICLE SD .......................SEVERE DUTY STD DUTY .............STANDARD DUTY STD ROTATION.......CLOCKWISE ROTATION FROM FRONT OF VEHICLE WHEN CHOICE IS GIVEN, BOLDED NUMBER INDICATES O.E. EQUIVALENT ENGINE FAN CLUTCH YEAR TYPE SIZE LITERS ROT APPLICATION THERMAL HEAVY DUTY SEVERE DUTY NON- THERMAL CLUTCH FAN 22 FAN CLUTCHES FAN CLUTCHES/FAN BLADESApplication Guide CHEVROLET & GMC TRUCKS (Contd) LIGHT DUTY FULL-SIZE TRUCKS AND SUVS (Contd) 06-02 V8 368 6.0 REV W/O A/C 2744 2786 01-99 V8 368 6.0 REV W/ TRL. TOW PKG. & 3.73. 3.42 OR 3.08 REAR AXLE RATIO 2744 2786 02-99 V8 368 6.0 REV W/O TRL. TOW PKG. & W/ 4.10 REAR AXLE RATIO 2744 2786 81-79 V8 350(N) 5.7(Z) STD DIESEL 2747 2797 00-96 V8 350 5.7 REV W/O A/C 2626 00-96 V8 350 5.7 REV W/ A/C, INCLUDING H/D TOW PACKAGE 2786 95-88 V8 350 5.7 REV W/3.73 OR NUMERICALLY HIGHER REAR AXLE RATIO 2734 2784 95-88 V8 350 5.7 REV W/ A/C & 3.42 OR NUMERICALLY LOWER REAR 2734 2784 95-88 V8 350 5.7 REV W/O A/C, W/3.08, 3.42 REAR AXLE RATIO 2724 91-82 V8 350 5.7 STD W/3.73 OR NUMERICALLY HIGHER REAR AXLE RATIO 2747 2797 91-82 V8 350 5.7 STD W/3.42 OR NUMERICALLY LOWER REAR AXLE RATIO 2747 2797 82-69 V8 350 5.7 STD W/STD FAN CLUTCH 2705 1705 81-73 V8 350 5.7 STD W/ H/D FAN CLUTCH 2747 2797 68-66 V8 327 5.4 STD W/STD. FAN CLUTCH & 18 FAN 2705 1705 06-02 V8 325 5.3 REV FLEX FUEL 2744 2986 07-06 V8 325 5.3 REV ALL 2986 06-99 V8 325 5.3 REV W/ A/C or W/ TRL. TOW PKG. OR 4.10 REAR AXLE RATIO 2986 05-99 V8 325 5.3 REV W/O A/C 2744 05-99 V8 325 5.3 REV W/O TRL. TOW PKG. & W/ 3.73. 3.42 OR 3.08 REAR AXLE RATIO 2744 2786 73 V8 307 5.0 STD W/ H/D FAN CLUTCH 2747 2797 73-67 V8 307 5.0 STD W/STD. FAN CLUTCH 2705 1705 99-96 V8 305 5.0 REV W/ A/C, INCLUDING H/D TOW PACKAGE 2786 99-96 V8 305 5.0 REV W/O A/C 2626 95-88 V8 305 5.0 REV W/O A/C, W/3.42 OR NUMERICALLY LOWER REAR AXLE RATIO 2724 95-88 V8 305 5.0 REV W/ A/C & 3.42 OR NUMERICALLY LOWER REAR AXLE RATIO 2734 2784 95-88 V8 305 5.0 REV W/ 3.73 OR NUMERICALLY HIGHER REAR AXLE RATIO 2734 2784 88-77 V8 305 5.0 STD W/STD ROTATION FAN CLUTCH 2705 1705 88-77 V8 305 5.0 STD W/O A/C, W/3.42 OR NUMERICALLY LOWER REAR AXLE RATIO 2747 2797 88-77 V8 305 5.0 STD W/ 3.73 OR NUMERICALLY HIGHER REAR AXLE RATIO 2747 2797 07-99 V8 292 4.8 REV W/ A/C OR W/ TRL. TOW PKG. OR 4.10 REAR AXLE RATIO 2744 2986 07-99 V8 292 4.8 REV W/O A/C 2744 2786 05-99 V8 292 4.8 REV W/O TRL. TOW PKG. & W/ 3.73. 3.42 OR 3.08 REAR AXLE RATIO 2744 2786 77-63 L6 292 4.8 STD W/STD. FAN CLUTCH 2705 1705 90-78 L6 292 4.8 STD W/O A/C 2707 1707 90-78 L6 292 4.8 STD W/ A/C 2747 2797 67-57 V8 283 4.6 STD 2705 1705 05-99 V6 262 4.3 REV W/ A/C OR W/ H/D TOW PACKAGE 2744 2986 05-99 V6 262 4.3 REV W/O A/C 2744 2786 98-96 V6 262 4.3 REV W/ A/C, INCLUDING H/D TOW PACKAGE 2744 2786 98-96 V6 262 4.3 REV W/O A/C 2626 95-88 V6 262 4.3 REV W/ A/C & 3.42 OR N NUMERICALLY LOWER REAR AXLE RATIO 2734 2784 95-88 V6 262 4.3 REV W/O A/C, W.3.42 OR NUMERICALLY LOWER REAR AXLE RATIO 2724 95-88 V6 262 4.3 REV W/3.73 OR NUMERICALLY HIGHER REAR AXLE RATIO 2734 2784 88-85 V6 262 4.3 STD W/3.73 OR NUMERICALLY HIGHER REAR AXLE RATIO 2747 2797 ENGINE FAN CLUTCH YEAR TYPE SIZE LITERS ROT APPLICATION THERMAL HEAVY DUTY SEVERE DUTY NON- THERMAL CLUTCH FAN A/C .....................AIR CONDITIONING H/D ....................HEAVY DUTY REV ROTATION .......COUNTER CLOCKWISE ROTATION FROM FRONT OF VEHICLE SD .......................SEVERE DUTY STD DUTY .............STANDARD DUTY STD ROTATION.......CLOCKWISE ROTATION FROM FRONT OF VEHICLE WHEN CHOICE IS GIVEN, BOLDED NUMBER INDICATES O.E. EQUIVALENT 23 FAN CLUTCHES/FAN BLADESApplication Guide FAN CLUTCHES CHEVROLET & GMC TRUCKS (Contd) LIGHT DUTY FULL-SIZE TRUCKS AND SUVS (Contd) 88-85 V6 262 4.3 STD W/3.42 OR NUMERICALLY LOWER REAR AXLE RATIO 2747 2797 84-78 L6 250 4.1 STD 2707 1707 3619 77-69 L6 250 4.1 STD 2705 1705 3618 MID-SIZE TRUCKS- BLAZER, TRIALBLAZER, ENVOY, JIMMY & PICK-UPS S & T10, 15 SERIES 07-06 V8 325 5.3 REV W/ ELECTRONIC FAN CLUTCH 3201 05-03 V8 325 5.3 REV W/ ELECTRONIC FAN CLUTCH 3200 05-96 V6 262 4.3 REV W/ A/C, CLASSIC BODY STYLE 2786 03-96 V6 262 4.3 REV W/O A/C, CLASSIC BODY STYLE 2626 95-94 V6 262 4.3 REV W/O A/C 2739 93-88 V6 262 4.3 REV W/O A/C 2727 95-88 V6 262 4.3 REV W/ A/C 2734 2784 07-06 V6 256 4.2 REV TRAILBLAZER & ENVOY W/ ELECTRONIC FAN CLUTCH 3201 05-02 V6 256 4.2 REV TRAILBLAZER & ENVOY W/ ELECTRONIC FAN CLUTCH 3200 93-87 V6 173 2.8 REV W/O A/C, W/ FRONT MOUNTED FAN 2580 93-87 V6 173 2.8 REV W/ A/C, W/ REAR MOUNTED FAN 2724 86-82 V6 173 2.8 STD W/O A/C, W/STD FAN CLUTCH 2706 1706 86 V6 173 2.8 STD W/ A/C, W/ H/D FAN CLUTCH 2705 2747 85-82 V6 173 2.8 STD W/ A/C, W/STD FAN CLUTCH 2615 93-87 L4 151 2.5 REV W/ A/C, W/ REAR MOUNTED FAN, MARKED SC 2722 91-89 L4 151 2.5 REV W/O A/C FRONT MOUNTED FAN, MARKED RM 2580 86-85 L4 151 2.5 STD W/O A/C 2705 1705 86 L4 151 2.5 STD W/ A/C 2708 85 L4 151 2.5 STD W/ A/C, MARKED CCR, w/ 5/16 fan mounting holes 2615 85 L4 151 2.5 STD W/ A/C, MARKED HU. W/ 8MM FAN MOUNTING BOLTS 2623 03-97 L4 134 2.2 REV W/ A/C 2626 96-94 L4 134 2.2 REV W/ A/C 2739 3620 03-97 L4 134 2.2 REV W/O A/C 2632 96-94 L4 134 2.2 REV W/O A/C 2631 85-82 L4 135 2.2 STD DIESEL ENGINE 84-83 L4 121 2.0 STD W/MANUAL TRANSMISSION 2551 84-83 L4 121 2.0 STD W/AUTOMATIC TRANSMISSION 2615 85-84 L4 121 1.9 STD W/MT, W/ FRONT MOUNTED FAN 2551 84-83 L4 121 1.9 STD W/AT, W/ REAR MOUNTED FAN 2615 CANYON, COLORADO 06-04 L5 211 3.5 REV 2WD & 4WD 2787 06-04 L4 169 2.8 REV 2WD & 4WD, w/o Electronic clutch 2778 SSR 07-06 V6 256 4.2 REV W/ ELECTRONIC FAN CLUTCH 3201 05-03 V8 368 6.0 REV 3200 TRACKER 04-01 V6 153 2.5 STD 2680 04-99 L4 122 2.0 STD 2680 04-01 L4 98 1.6 STD CANADIAN AND EXPORT 2582 00-99 L4 98 1.6 STD 2582 LUV PICKUP 82-81 L4 135 2.2 STD DIESEL 2561 82-72 L4 110 1.8 STD GAS 2561 A/C .....................AIR CONDITIONING H/D ....................HEAVY DUTY REV ROTATION .......COUNTER CLOCKWISE ROTATION FROM FRONT OF VEHICLE SD .......................SEVERE DUTY STD DUTY .............STANDARD DUTY STD ROTATION.......CLOCKWISE ROTATION FROM FRONT OF VEHICLE WHEN CHOICE IS GIVEN, BOLDED NUMBER INDICATES O.E. EQUIVALENT ENGINE FAN CLUTCH YEAR TYPE SIZE LITERS ROT APPLICATION THERMAL HEAVY DUTY SEVERE DUTY NON- THERMAL CLUTCH FAN 24 FAN CLUTCHES FAN CLUTCHES/FAN BLADESApplication Guide CHEVROLET & GMC TRUCKS (Contd) POSTAL VEHICLE (LLV) 95-94 L4 151 2.2 REV CHEVROLET & GMC VANS FULL-SIZE VANS G 10-30, EXPRESS / SAVANA, & CLASS C MOTORHOMES 02-01 V8 498 8.1 REV ALL 2780 00-87 V8 454 7.4 REV ALL 2784 78-73 V8 454 7.4 STD ALL 2797 77-74 V8 400 6.6 STD W/STD FAN CLUTCH 2705 1705 02-99 V8 399 6.5 (F) REV TURBO DIESEL, NEW BODY STYLE 2850 98-97 V8 399 6.5 (F) REV TURBO DIESEL, NEW BODY STYLE 2839 96 V8 399 6.5 (F) REV NON TURBO DIESEL, NEW BODY STYLE 2831 95-94 V8 399 6.5 (P) REV TURBO DIESEL, OLD BODY STYLE 2785 96-94 V8 399 6.5 (Y) REV NON TURBO DIESEL, OLD BODY STYLE 2785 93-83 V8 399 6.2 STD DIESEL 2799 07-03 V8 368 6.0 REV ALL 2786 02-99 V8 368 6.0 REV W/TRL.TOW PKG & H/D COOLING 3.75 REAR AXLE RATIO 2744 2786 02-96 V8 350 5.7 REV W/O A/C 2626 02-96 V8 350 5.7 REV W/ A/C 2744 95-87 V8 350 5.7 REV W/ A/C, W/3.42 OR NUMERICALLY LOWER REAR AXLE RATIO 2734 2784 95-87 V8 350 5.7 REV W/3.73 OR NUMERICALLY HIGHER REAR AXLE RATIO 2734 2784 95-87 V8 350 5.7 REV W/O A/C, W/3.08, OR 3.42 REAR AXLE RATIO 2724 88-73 V8 350 5.7 STD H/D COOLING 2797 88-73 V8 350 5.7 STD W/O H/D COOLING 2747 2797 86-81 V8 350 5.7 STD W/O A/C, W/STD FAN CLUTCH 2706 1706 80-70 V8 350 5.7 STD W/O A/C, W/STD FAN CLUTCH 2705 1705 07-03 V8 325 5.3 REV W/ A/C 2786 07-03 V8 325 5.3 REV W/O A/C 2786 02-99 V8 325 5.3 REV W/TRL.TOW PKG & H/D COOLING 3.75 REAR AXLE RATIO 2744 2786 69-68 V8 327 5.3 STD 2705 1705 73-69 V8 307 5.0 STD 2705 1705 02-96 V8 305 5.0 REV W/ A/C 2744 2786 02-96 V8 305 5.0 REV W/O A/C 2626 95-87 V8 305 5.0 REV W/ A/C, W/3.08, OR 3.42 REAR AXLE RATIO 2734 2784 95-87 V8 305 5.0 REV W/3.73 OR NUMERICALLY HIGHER REAR AXLE RATIO 2734 2784 95-87 V8 305 5.0 REV W/O A/C, W/ 3.42 OR 3.08 REAR AXLE RATIO 2724 86-81 V8 305 5.0 STD W/O A/C, W/3.08, OR 3.42 REAR AXLE RATIO 2706 1706 86-75 V8 305 5.0 STD W/O A/C, W/STD FAN CLUTCH 2747 2797 86-75 V8 305 5.0 STD W/ A/C, W/2.73 OR 3.08 REAR AXLE RATIO 2747 2797 80-68 V8 305 5.0 STD W/ STD FAN CLUTCH 2705 1705 07-03 V8 292 4.8 REV W/ A/C 2786 07-03 V8 292 4.8 REV W/O A/C 2786 02-99 V8 368 4.8 REV W/TRL.TOW PKG & H/D COOLING 3.75 REAR AXLE RATIO 2744 2786 77-62 L6 292 4.8 STD 2707 1707 07-03 V6 262 4.3 REV W/ A/C 2786 07-03 V6 262 4.3 REV W/O A/C 2786 02-00 V6 262 4.3 REV W/ A/C 2744 02-00 V6 262 4.3 REV W/O A/C 2626 99-96 V6 262 4.3 REV W/ A/C 2744 99-96 V6 262 4.3 REV W/O A/C 2626 95-87 V6 262 4.3 REV W/O A/C,W/ 3.08, 3.42 REAR AXLE RATIO 2724 ENGINE FAN CLUTCH YEAR TYPE SIZE LITERS ROT APPLICATION THERMAL HEAVY DUTY SEVERE DUTY NON- THERMAL CLUTCH FAN A/C .....................AIR CONDITIONING H/D ....................HEAVY DUTY REV ROTATION .......COUNTER CLOCKWISE ROTATION FROM FRONT OF VEHICLE SD .......................SEVERE DUTY STD DUTY .............STANDARD DUTY STD ROTATION.......CLOCKWISE ROTATION FROM FRONT OF VEHICLE WHEN CHOICE IS GIVEN, BOLDED NUMBER INDICATES O.E. EQUIVALENT 25 FAN CLUTCHES/FAN BLADESApplication Guide FAN CLUTCHES CHEVROLET & GMC VANS (Contd) FULL-SIZE VANS G 10-30, EXPRESS / SAVANA, & CLASS C MOTORHOMES (Contd) 95-87 V6 262 4.3 REV W/ A/C, W/3.08 OR 3.42 REAR AXLE RATIO 2734 2784 95-87 V6 262 4.3 REV W/3.73, 4.10, OR 4.56 REAR AXLE RATIO 2734 2784 86-85 V6 262 4.3 STD W/0 A/C, W/ STD FAN CLUTCH 2706 1706 86-85 V6 262 4.3 STD W/ A/C, H/D FAN CLUTCH 2705 2747 85-67 L6 250 4.1 STD W/ A/C 2705 1705 3619 85-67 L6 250 4.1 STD W/O A/C 2706 1706 3619 69-63 L6 230 3.8 STD 2705 1705 3618 MINI VANS ASTRO & SAFARI 05-96 V6 262 4.3 REV ALL 2786 95-90 V6 262 4.3 REV W/ A/C, W/3.42 OR NUMERICALLY LOWER REAR AXLE RATIO 2734 2784 95-87 V6 262 4.3 REV W/ A/C, W/ 3.73 REAR AXLE RATIO 2734 2784 89-87 V6 262 4.3 REV W/ A/C, W/3.42 OR NUMERICALLY LOWER REAR AXLE RATIO 2734 86-85 V6 262 4.3 STD W/ A/C, W/ 3.73 REAR AXLE RATIO 2747 2797 94-88 V6 262 4.3 REV W/O A/C 2739 86-85 V6 262 4.3 STD W/ A/C, W/3.42 OR NUMERICALLY LOWER REAR AXLE RATIO 2705 2747 86-85 V6 262 4.3 STD W/O A/C, W/STD FAN CLUTCH 2706 1706 90-88 L4 151 2.5 REV W/ A/C 2722 87 L4 151 2.5 REV W/O A/C, W/FRONT MOUNTED FAN 2580 86-85 L4 151 2.5 STD W/ A/C, W/FRONT MOUNTED FAN 2551 85 L4 151 2.5 STD W/O A/C, W/FRONT MOUNTED FAN 2557 CHEVROLET & GMC MEDIUM DUTY TRUCKS & BUSES C4500 & C5500 TRUCKS 07-03 V8 498 8.1 REV 07-03 V8 400 6.6 REV DURAMAX DIESEL C6500, C7500 & C8500 TRUCKS 05-03 V8 498 8.1 REV GAS ENGINE 05-03 V8 479 7.8 STD ISUZU ENGINE 05-03 L6 441 7.2 STD CAT 3126 C6 & C7 TRUCKS 87-73 V8 427 7.0 STD W/ MANUAL TRANS & 4 FAN MOUNTING HOLES 2801 93-82 V8 379 6.2 STD DIESEL W/6 BOLT FAN CLUTCH 2828 90-73 V8 366 6.0 STD W/ MANUAL TRANS & 4 FAN MOUNTING HOLES 2801 STEELCONVENTIONAL TRUCK (SC6 & SC7) 90-88 V8 636 10.4 STD CAT 3208N MARKED (KUJ) 88-83 V8 636 10.4 STD CAT 3208N MARKED (VQA) 87-83 V8 636 10.4 STD CAT 3208T MARKED (KUJ) 89-83 V8 501 8.2N STD DETROIT DIESEL NATURALLY ASPIRATED 89-83 V8 501 8.2T STD DETROIT DIESEL TURBOCHARGED 89-83 V8 427 7.0 STD W/ 6 FAN MOUNTING HOLES 2872 89-83 V8 427 7.0 STD W/4 FAN MOUNTING HOLES 2801 89-83 V8 366 6.0 STD W/ 6 FAN MOUNTING HOLES 2872 89-83 V8 366 6.0 STD W/4 FAN MOUNTING HOLES 2801 89-83 V8 350 5.7 STD 87-83 L6 292 4.8 STD A/C .....................AIR CONDITIONING H/D ....................HEAVY DUTY REV ROTATION .......COUNTER CLOCKWISE ROTATION FROM FRONT OF VEHICLE SD .......................SEVERE DUTY STD DUTY .............STANDARD DUTY STD ROTATION.......CLOCKWISE ROTATION FROM FRONT OF VEHICLE WHEN CHOICE IS GIVEN, BOLDED NUMBER INDICATES O.E. EQUIVALENT ENGINE FAN CLUTCH YEAR TYPE SIZE LITERS ROT APPLICATION THERMAL HEAVY DUTY SEVERE DUTY NON- THERMAL CLUTCH FAN 26 FAN CLUTCHES FAN CLUTCHES/FAN BLADESApplication Guide CHEVROLET & GMC MEDIUM DUTY TRUCKS & BUSES (Contd) TOPKICK & KODIAK 02-01 V8 498 8.1 STD 2846 00-99 V8 454 7.4 STD W/ 6 FAN BOLT HOLES MARKED (GDR or GDS) 2844 00-99 V8 454 7.4 STD W/ 4 FAN BOLT HOLES MARKED (RT) 2811 00-99 V8 454 7.4 STD W/ 6 FAN BOLT HOLES MARKED (NG) 2834 02-98 L6 441 7.2 STD CAT 3126 MARKED (GPK) 2871 02-98 L6 441 7.2 STD CAT 3126 MARKED (GBF) 02-98 L6 441 7.2 STD CAT 3126 MARKED (GAB) 02-98 L6 441 7.2 STD CAT 3126 MARKED (GAC) 02-98 L6 441 7.2 STD CAT 3126 MARKED (GPL) 98-90 V8 427 7.0 REV W/ 4 FAN MOUNT BOLTS, MARKED (RT) 2811 98-90 V8 427 7.0 STD W/ 6 FAN MOUNT BOLTS, MARKED (NG or NF) 2834 98-97 V8 427 7.0 STD MARKED (GDK), 2 SHAFT LENGTH 2847 02-98 L6 405 6.6 STD MARKED (GBF, GAB, GAC) 00-97 L6 405 6.6 STD MARKED (GPK) W/HIGH VISIBILITY HOOD 2871 99-97 L6 405 6.6 STD MARKED (GPL) 96-90 L6 405 6.6 STD MARKED (GBF) 98-90 V8 366 6.0 STD W/ 4 FAN MOUNT BOLTS, MARKED (RT) 2811 97-90 V8 366 6.0 STD W/ 6 FAN MOUNT BOLTS, MARKED (NG) 2834 98-90 V8 366 6.0 STD W/ 6 FAN MOUNT BOLTS, MARKED (NF) 2834 TILT CAB 6000, 7000, 8000 & (GMT 540) 07-98 L6 7.8 STD ISUZU ENGINE 99 V8 454 7.4 STD GAS ENGINE 02-98 L6 441 7.2 STD CAT 3126 98-97 L6 436 7.1 STD ISUZU ENGINE 01 L6 403 6.6 STD CAT 3116 97 L6 403 6.6 STD CAT 3116 98-97 V8 366 6.0 STD GAS ENGINE 07-04 L4 240 3.9 STD CUMMINS P4, P6, P6S, P10-30 FORWARD CONTROL UTILITY VAN CHASSIS (Includes Motorhomes and utility vans) 89-83 V8 501 8.2N STD DETROIT DIESEL MARKED VQA 89-83 V8 501 8.2T STD DETROIT DIESEL MARKED VQA 04-03 V8 498 8.1 REV GAS ENGINE 01-00 V8 498 8.1 REV GAS ENGINE 2881 2001 V8 454 7.4 STD GAS ENGINE 99-96 V8 454 7.4 REV ALL 2784 95-73 V8 454 7.4 STD ALL 2797 96-92 V8 427 7.0 STD W/ 6 FAN MOUNT BOLTS, MARKED (NF) 2834 87-85 V8 427 7.0 STD W/ 6 FAN MOUNTING HOLES 2872 96-92 L6 402 6.6 STD CAT 3116 04-00 V8 399 6.5 REV DIESEL 99 V8 399 6.5 REV TURBO DIESEL 2850 99-97 V8 399 6.5 REV DIESEL HIGH OUTPUT & TURBO 96-94 V8 399 6.5(Y) REV NON TURBO DIESEL HIGH OUTPUT 2785 96-94 V8 399 6.5(F) REV TURBO DIESEL HIGH OUTPUT 2831 96-94 V8 399 6.5(S) REV TURBO DIESEL 2831 93-92 V8 399 6.5 REV 2832 93-73 V8 379 6.2 STD DIESEL 2799 2004 V8 366 6.0 STD GAS ENGINE 96-92 V8 366 6.0 STD W/ 6 FAN MOUNT BOLTS, MARKED (NF) 2834 ENGINE FAN CLUTCH YEAR TYPE SIZE LITERS ROT APPLICATION THERMAL HEAVY DUTY SEVERE DUTY NON- THERMAL CLUTCH FAN A/C .....................AIR CONDITIONING H/D ....................HEAVY DUTY REV ROTATION .......COUNTER CLOCKWISE ROTATION FROM FRONT OF VEHICLE SD .......................SEVERE DUTY STD DUTY .............STANDARD DUTY STD ROTATION.......CLOCKWISE ROTATION FROM FRONT OF VEHICLE WHEN CHOICE IS GIVEN, BOLDED NUMBER INDICATES O.E. EQUIVALENT 27 FAN CLUTCHES/FAN BLADESApplication Guide FAN CLUTCHES CHEVROLET & GMC MEDIUM DUTY TRUCKS & BUSES (Contd) P4, P6, P6S, P10-30 FORWARD CONTROL UTILITY VAN CHASSIS (Includes Motorhomes and utility vans) (Contd) 89-83 V8 366 6.0 STD W/ 4 FAN MOUNTING HOLES 2801 89-83 V8 366 6.0 STD W/ 6 FAN MOUNTING HOLES 2872 04-00 V8 350 5.7 STD GAS ENGINE 99-96 V8 350 5.7 REV W/REVERSE ROTATION FAN CLUTCH 2787 95-73 V8 350 5.7 STD W/O H/D COOLING 2747 2797 95-73 V8 350 5.7 STD H/D COOLING 2747 2797 89-85 L6 292 4.8 STD W/ AUTOMATIC TRANS 2872 89-85 L6 292 4.8 STD W/ MANUAL TRANSMISSION 99-96 V6 262 4.3 REV 2786 95-85 V6 262 4.3 STD 2782 MEDIUM DUTY BUSES SCHOOL BUSES, B7 SERIES, 1993 and later (Chassis B7T) 02-01 V8 498 8.1 REV 2881 00-98 V8 454 7.4 STD 2844 02-98 L6 441 7.2 STD CAT 3126 98-93 V8 427 7.0 STD WITH 6 FAN BOLT HOLES 2834 98-93 V8 427 7.0 STD WITH 4 FAN BOLT HOLES 2811 02-93 L6 403 6.6 STD CAT 3116 98-97 V8 399 6.5 (F) REV GM DIESEL 2881 98-93 V8 366 6.0 STD WITH 6 FAN BOLT HOLES 2834 98-93 V8 366 6.0 WITH 4 FAN BOLT HOLES 2811 SCHOOL BUSES, B & S SERIES, 1991 and earlier 91-83 V8 501 8.2N STD DETROIT DIESEL NATURALLY ASPIRATED 91-83 V8 501 8.2T STD DETROIT DIESEL TURBO CHARGED 91-83 V8 427 7.0 STD W/ 4 FAN MOUNTING HOLES 2801 91-85 V8 427 7.0 STD W/ 6 FAN MOUNTING HOLES 2872 91-83 V8 366 6.0 STD W/ 4 FAN MOUNTING HOLES 2801 91-85 V8 366 6.0 STD W/ 6 FAN MOUNTING HOLES 2872 90-88 V8 366 6.0 STD W/ 6 FAN MOUNTING HOLES MARKED (RH) 88-86 V8 366 6.0 STD MARKED VQA 90-83 V8 350 5.7 STD 83 L6 292 4.8 STD CHRYSLER CARS 5TH AVENUE, NEW YORKER & BROUGHAM 78-66 V8 440 7.2 STD W/STD FAN CLUT
