HEAD BOLT BUSH FORD 289-351w set

These Edelbrock steel head bolt bushing kits allow you to use stock or aftermarket head bolts with Edelbrock or other aftermarket cylinder heads. They take the place of your head bolt washers and are hardened and chamfered.Washer Outside Diameter (in): 0.500 inch. Washer Inside Diameter (in): 0.438 inch.