MAHLE 50721.030 Engine Piston Ring Set Over - 0.030

The MAHLE Original 50721.030 Engine Piston Ring Set is a premium OE-quality replacement ring set manufactured to the same exacting standards as original equipment. MAHLE piston rings are among the most technically advanced in the industry, engineered to reduce friction and ring mass while minimizing engine oil consumption and delivering longer service life. The .030 designation indicates a 0.030-inch oversize, designed for use in engines that have been bored or honed to that specification.

Key Features:

• Upper compression rings feature cast iron or ductile cast iron construction with a positive twist and barrel face for instantaneous break-in
• Compression rings feature a barrel-faced contact area for more efficient compression and CNC-controlled gap chamfer to optimize compression and reduce blowby
• Second rings provide superior oil control, improved combustion gas management, top ring stability, and sealing for the best possible oil control and least amount of power loss
• Intermediate rings incorporate a reverse twist design for better groove side sealing, and taper race machining to enhance contact
• CP-20 oil ring assemblies feature a 20-degree ear angle for the best possible side seal against the cylinder wall, with a special chemical polish on the oil ring expander for enhanced oil drainback
• Ring sets are designed to be installer-friendly and are pre-lapped to seat immediately, virtually eliminating break-in time
• Ring materials, coatings, and tension are all optimized for reduced friction and extended service life in each specific application

MAHLE is one of the largest OE piston ring manufacturers in the world and leads the industry for the latest piston ring technology. The 50721.030 ring set delivers a direct OE replacement fit, ensuring proper cylinder sealing, oil control, and engine performance when rebuilding or overhauling an engine bored to 0.030 over standard.