Piston Ring Set 4.030 Classic 2.0 1.5 4.0mm

The Piston Ring Set 4.030 Classic 2.0 1.5 4.0mm by Total Seal represents a precision engine rebuild component engineered for builders and mechanics who demand OEM-grade reliability in high-performance and classic engine applications. This ring set is designed for 4.030-inch bore engines and addresses the critical function of creating a sealed combustion chamber—essential for maintaining compression, controlling blow-by, and extending engine longevity. Whether you're rebuilding a vintage small-block or restoring a classic performance engine, quality piston rings directly impact throttle response, fuel economy, and overall power delivery.

Total Seal's Classic 2.0 ring geometry features a 1.5mm second ring and 4.0mm oil ring configuration, proven profiles that balance ring tension against cylinder wall wear while minimizing friction. The 2.0mm top ring thickness is optimized for controlled expansion under heat cycling, critical in both street and high-RPM applications. This piston ring set is manufactured to tight tolerances that ensure proper seating and uniform pressure distribution around the piston head. Total Seal's heritage in motorsports and engine development means these rings undergo rigorous testing to handle varied fuel octanes, ambient temperatures, and load conditions that tactical and field equipment operators encounter.

This ring set is compatible with any engine block designed for 4.030-inch pistons and matching cylinder bore specifications; verify your piston diameter and ring groove dimensions before purchase. Installation requires precision honing to achieve proper surface finish and ring end-gap clearances per Total Seal specifications—typically 0.003–0.005 inches per inch of bore diameter. The compact 5 x 2 x 10 inch package and lightweight 0.95 lbs shipping profile make this set easy to store and transport to your machine shop or rebuild facility.