Piston Ring Set 4.160 1.5 1.5 3.0mm

The Piston Ring Set 4.160 1.5 1.5 3.0mm by MAHLE PISTONS represents OEM-grade compression and oil-control technology for serious engine builders and high-performance enthusiasts. This precision ring set is engineered for 4.160-inch bore diameters and serves as a critical component in both stock restorations and modified engines where ring seal integrity directly impacts horsepower, fuel economy, and longevity. Whether you're rebuilding a street engine, preparing a race motor, or restoring a classic, selecting the correct ring set specification is non-negotiable for proper compression and blow-by control.

MAHLE's design features a 1.5mm top compression ring, 1.5mm second compression ring, and 3.0mm oil control ring—a geometry optimized for stable ring sealing across a wide RPM range while minimizing friction losses. The dual compression ring configuration distributes pressure loads evenly, reducing stress on individual rings and extending ring life under boost, nitrous, or high-RPM operation. Premium material composition and precise tolerances ensure consistent bore contact pressure, preventing blow-by that would rob power and foul oil. The oil ring's 3.0mm thickness provides superior scraping efficiency and return flow, critical for keeping piston crown temps stable and preventing carbon buildup that compromises ring seating.

This piston ring set is ideal for anyone machining a 4.160-inch bore block—whether stroker engines, overbore builds, or precision restorations requiring exact OEM specifications. Proper ring end-gap clearance (set per manufacturer specs during installation) and bore honing to the correct Ra finish are essential for maximum ring life and performance. Installation with a ring compressor and careful piston-to-bore fit ensures no cross-threading or binding. Compatible with any engine platform using 4.160-inch pistons, from small-block Chevys to Ford and Mopar builds where bore diameter matches this specification.