SCHLEY PRODUCTS GM and Chrysler Water Pump/FanClutch Pulley Holder SL99800A This specially designed tool is used on vehicles using pressed on pulleys. These pulleys have holes instead of bolt heads for use in securing the pulley from rotating while removing or installing the fan clutch assembly. With the use of a 36 mm open end wrench part #88550, #93260 or #95210 the technician can loosen and tighten the fan clutch on many 1999 and later G.M. trucks, vans, SUV's. Many 1998 and later Jeeps. Also many 1998 and later Dodge trucks, vans and SUV's. The #99800 is used on the following applications: G.M. 4.8 liter V-8, 5.3 liter V-8 and 6.0 liter V-8 1999 and later. Chrysler, 3.7 liter V-6, 3.9 liter V-6, 4.7 liter V-8, 5.2 liter V-8, 5.9 liter V-8, 8.0 liter V-10 1998 and later. Chrysler engines using factory replacement water pumps for the following engines; 3.9 liter V-6, 5.2 liter V-8, 5.9 liter V-8 1993 and later also, 8.0 liter V-10 1997 and later