Pistons and piston Rings
Pistons and rings operate in a very explosive environment, so they have to be extremely tough. Chevrolet Performance pistons and rings are designed to withstand the rigors of high-performance engines. The pistons are factorytested for quality assurance. Chevrolet Performance pistons are sold in a variety of sizes and compression ratios. There are pistons for GM Big-Block engines ranging in displacement from 427 cubic inches to 572 cubic inches. Pistons are sold individually and are fitted with wrist pins.

NOTE: Part numbers are for one piston; order eight per engine.

Big-Block Piston
Part Number: 12523921
Bore Size: 4.250"
Oversize: Standard
Ring Thickness: 5/64", 5/64", 3/16"
Description: Standard-size ring pack for Gen V 454 HO