Allstar Performance Water Pump Pulley Shim, 0.063 in and 0.125 in Thick, 5/8 in and 3/4 in Shaft, Aluminum, Natural, Ford/GM Water Pumps, Set of 3;

Use shim kits to properly align pulleys. Water pump shims have dual bolt hole pattern to fit most GM Ring and Pinion Gear Set and Ford water pumps. Crank pulley spacers are for small block Chevy. Each kit includes 3 shims. Water pump kit includes two 1/16 inch and one 1/8 inch shims. Crank kit includes one each of 1/16 inch, 5/64 inch and 1/8 inch shims.