Perf. Piston Ring Set V8 4.035 Bore 1.5x1.5x3.0

The NPR Performance Piston Ring Set V8 4.035 Bore 1.5x1.5x3.0 is engineered for serious engine builders and mechanics rebuilding American V8 powerplants requiring factory-spec or performance-minded ring solutions. This eight-cylinder ring kit addresses the critical seal between piston and cylinder wall, where proper ring design directly impacts compression retention, blow-by control, and overall engine longevity. Whether you're restoring a classic muscle car, refreshing a tired truck engine, or building a performance platform, selecting the correct ring geometry is non-negotiable for reliable operation.

This ring set features a 4.035-inch bore diameter with traditional 1.5mm top ring, 1.5mm second ring, and 3.0mm oil ring thickness—a proven combination for V8 engines spanning decades of domestic automotive design. The steel construction with nitride surface treatment delivers superior wear resistance and corrosion protection, extending ring life under sustained combustion pressures and elevated temperatures. Standard tension characteristics ensure compatible fit within stock or lightly modified cylinder bores, maintaining proper radial force without requiring custom honing or ring gap adjustment beyond industry-standard practices for fresh rebuilds.

Technicians and engine builders working on 4.035-bore applications—including many small-block and mid-block V8 variants—will find this ring set compatible with both stock and mildly boosted platforms. Proper installation requires fresh honing to specification, correct ring gap measurement, and careful piston/ring assembly to avoid damage during installation. This is an essential component for any engine rebuild where maintaining proper combustion sealing and minimizing oil consumption are paramount. Pair with quality piston sets, gaskets, and fasteners for complete, professional-grade engine restoration.