Water Pump Pulley - 1 to 1 - V-Belt - 2 Groove - 6.625 in Diameter - Aluminum - Polished - Short Water Pump - Small Block Chevy - Each Brand Allstar Performance THIS PULLEY IS DESIGNED TO BE USED ON A 5/8 DIAMETER SHAFT WATER PUMP WITH A BLOCK MOUNTING FLANGE TO PULLEY MOUNTING FLANGE MEASUREMENT OF 5-5/8. 6-5/8 Diameter. FOR COUNTER SUNK BOLTS USE MRG5321,TRA9492, RPCR0005 ALL31085 Truck Freight- NO State Restriction-
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