Piston Ring Set 4.035 1/16 1/16 3/16in

The Piston Ring Set 4.035 1/16 1/16 3/16in from MAHLE PISTONS is engineered for high-performance eight-cylinder engine builds where precision ring sealing and durability are non-negotiable. Whether you're rebuilding a street engine, assembling a race motor, or restoring a classic with modern internals, this file-fit ring set delivers the compression control and blow-by reduction that separates a properly sealed engine from a mediocre one. Designed for 4.035-inch bore applications, these rings are the critical component that maintains piston-to-cylinder wall contact across the entire rpm range.

This ring set combines a 1/16-inch top compression ring, 1/16-inch second compression ring, and 3/16-inch oil control ring in a low-tension configuration manufactured from ductile iron with plasma moly coating. The plasma moly finish provides superior wear resistance and reduces friction during initial engine startup and break-in, critical for ring seating and longevity. The file-fit design requires honing to the specific bore diameter and careful installation—a hallmark of premium ring sets that demand proper machining and assembly technique. The low-tension profile minimizes parasitic drag while maintaining effective sealing at both peak combustion pressures and idle, making these rings suitable for naturally aspirated and forced-induction applications alike.

Experienced engine builders and professional machine shops specify MAHLE ring sets for 8-cylinder platforms because ring quality directly impacts oil consumption, combustion efficiency, and overall engine reliability. These rings excel in both street and competition builds where controlling blow-by and maintaining cylinder pressure is essential to horsepower delivery and fuel economy. Proper cylinder wall finish (typically 20–30 Ra), correct piston-to-wall clearance, and meticulous ring installation are prerequisites for optimal performance. The 4.035-inch bore size fits a wide range of small-block and mid-sized V8 applications; verify your engine's exact bore diameter and ring groove dimensions before ordering to ensure compatibility with your specific piston and block combination.