KB Hypereutectic Piston 4.165" Bore 5/64 x 5/64 x 3/16" Ring Grooves - Plus 17.0 cc H775C30M O2 Sensor Bung / Gasket

O2 Sensor Bung / Gasket

Excellent power for towing

750" long Hi-Tech 5/16" diameter pushrods are 17% stiffer than

5/8 in Wheel Hole

KB Hypereutectic Piston 4.165" Bore 5/64 x 5/64 x 3/16" Ring Grooves - Plus 17.0 cc H775C30M O2 Sensor Bung / GasketProduct Description: Piston KB Series Hypereutectic 4. 165 in Bore 5 64 x 5 64 x 3 16 in Ring Grooves Plus 17. 00 cc Big 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, gas