Tapered Pulley Bolts For Billet Water Pump Pulleys

Part #(MCC862) Comes in sets of Four Installation tips: Using an Allen wrench or Allen head socket to start and thread these bolts into the water pump makes installation easy final tighten should be done in sequence Material Steel bolts nickel plated Diameter  The diameter of MCC862 pulley bolts are 9/16" Thread  The thread pitch of these bolts is 5/16 x 18 for all big and small block Chevy water pumps Length MCC862 pulley bolts are 1/2" in length Allen Head MCC862 pulley has a 3 /16 Allen head top for tightening Set of 4 MCC862 pulley bolts come in sets of 4 . One set/order is enough for one engine Long & Short Water Pump MCC862 is for both Short (SWP) and Long water pump (LWP) Big Block and Small Block Chevy engines Electric Fans Only MCC862 pulley bolts are "flush mount" for use with electric fans only Application  MCC862 Billet pulley bolt set is for Chevrolet engines using billet aluminum pulleys with tapered seats Restrictions Cannot be run on engines using mechanical fans. When using a mechanical fan the fan spacer will cover the tapered holes in billet pulleys Check Out these related items To see all our billet Chevy pulleys click here