Piston Ring Set 4.250 Moly 1/16 1/16 3/16

The Piston Ring Set 4.250 Moly 1/16 1/16 3/16 from MAHLE Original is a complete ring set engineered for eight-cylinder engines requiring precise bore fitment and reliable compression sealing. This OEM-quality component is essential for engine rebuilds, restorations, and performance machine work where maintaining factory specifications and durability are non-negotiable. Whether you're rebuilding a classic V8 or restoring original engine performance, this ring set delivers the compression control and blow-by reduction that modern rebuilders and engine shops demand.

Manufactured from steel with plasma moly coating, the Piston Ring Set 4.250 Moly features a 1/16 inch top ring thickness, 1/16 inch second ring thickness, and 3/16 inch oil control ring thickness—dimensions that define proper ring package balance and oil management in traditional 8-cylinder configurations. The plasma moly surface treatment reduces friction, minimizes scuffing during break-in, and extends ring and cylinder wall life compared to standard iron rings. File fit construction allows shop technicians to hone rings to exact bore specifications during installation, ensuring optimal ring gap clearance and preventing blowby at all engine speeds and loads.

Professional engine builders, machine shops, and restoration specialists rely on MAHLE Original piston rings for their precision and consistency across multiple ring sets and engine platforms. The 4.250 inch bore specification fits a wide range of classic and modern V8 applications; verify your exact piston bore diameter before purchase to ensure proper fit and sealing. Standard tension design balances ring pressure against cylinder walls while minimizing piston land stress, making this set ideal for street-driven engines and performance applications alike. Installation requires proper ring end-gap filing and bore honing to specification for maximum performance and longevity.