KB Hypereutectic SB Chevy Domed Piston Set - 4.030" Bore - 3.250" Stroke - 5.700" Rod Length YA0814ABP To keep your engine running

To keep your engine running clean

Bushwacker Trail Armor components are rugged and easy to install

Durable Nomex ® Outer Layer

1953-1956 Packard Patrician

KB Hypereutectic SB Chevy Domed Piston Set - 4.030" Bore - 3.250" Stroke - 5.700" Rod Length YA0814ABP To keep your engine runningModern piston design locates the top ring higher for improved performance. a high top ring operates at higher temperatures and requires a larger top ring end gap. To find the proper ring end gap, multiply your bore size by the ring end gap factor listed on the chart (i. e. , Street Normally Aspirated 4. 000" bore x . 0065" gap factor = . 026" total top ring end gap). Your hypereutectic performance piston will expand less than typical cast or forged