Washer Zip Washer 7/16 ID and 1 Inch OD Johnson Raw Water Pump OEM Indmar 565952Q

Zip Washer - Goes between the Johnson Crank Driven Raw Water Pump and the crank when installing to minimize vibration and shaking. You will need one washer for each bolt. Early LT1 engines used a spacer washer behind the pump because of the rough casting on the balancer. That could cause the pump to pull itself apart if not running true. 7/16" Inner Diameter 1" Outside Diameter