KB Hypereutectic Piston 4.155" Bore 5/64 x 5/64 x 3/16" Ring Grooves - Minus 22.0 cc 13106 Cast Aluminum Differential Cover for

Cast Aluminum Differential Cover for Ford 9

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5-lug side fits 5 x 4

Polyurethane is a synthetic polymer that has many properties that make it far superior to OEM rubber bushings

P/N 554-128

KB Hypereutectic Piston 4.155" Bore 5/64 x 5/64 x 3/16" Ring Grooves - Minus 22.0 cc 13106 Cast Aluminum Differential Cover forProduct Description: Piston KB Series Hypereutectic 4. 155 in Bore 5 64 x 5 64 x 3 16 in Ring Grooves Minus 22. 00 cc Small Block Chevy Set of 8 Created from a high silicon aluminum alloy, KB Performance pistons are lightweight to improve throttle response and RPM changes while still being strong enough to withstand high compression and high temperatures. Each piston is engineered with race ready features like high upper compression ring locations,