KB Hypereutectic Piston 4.290" Bore 5/64 x 5/64 x 3/16" Ring Grooves - Plus 12.0 cc 2010203 9 wideband O2 sensors for

9 wideband O2 sensors for accurate readings and precise tuning control

Tester checks cylinder compression from 0 to 300 PSI and features an air-hold valve to reset gauge

4 x 6-1/2 in Round Body

1-1/8 in Hex

Improve handling of the rear suspension on 1978-88 GM metric chassis by replacing twisted or worn out rear control arms

KB Hypereutectic Piston 4.290" Bore 5/64 x 5/64 x 3/16" Ring Grooves - Plus 12.0 cc 2010203 9 wideband O2 sensors forProduct Description: Piston KB Series Hypereutectic 4. 290 in Bore 5 64 x 5 64 x 3 16 in Ring Grooves Plus 12. 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