SKU: NPR20-GNHM4020K8
MPN: 20-GNHM4020K8
The Perf. Piston Ring Set V8 4.020 Bore 1.2x1.5x3.0 is designed for serious engine builders and performance enthusiasts who require precision in large-displacement V8 applications. This ring set is ideal for big-block engine builds that demand exact dimensional tolerances and superior sealing characteristics.
The 1.2x1.5x3.0 ring profile is optimized for modern combustion efficiency and effective blow-by control. The top compression ring (1.2mm) seals against cylinder pressure, while the second ring (1.5mm) manages blow-by gases, and the 3.0mm oil ring ensures proper lubrication of the cylinder walls.
This ring set is perfect for technicians rebuilding vintage big-block engines such as the Chevrolet 427/454, Ford 427/460, and Chrysler 440, as well as modern applications with a 4.020-inch bore. It delivers the reliability and compression sealing necessary for high-performance builds.
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