Ford Performance Crankshaft Pulley Spacer, 0.950" Thick, Aluminum, Natural, 4-Bolt Balancer, Small Block Ford

Note: Early 3-bolt crank pulleys generally bolt directly to the damper with flanged pulley pilot (damper is drilled for 3- and 4-bolt patterns). Pulley alignment should be checked and any misalignment corrected with the proper thickness spacer.