MAHLE 42047CP.020 Original Premium Engine Piston Ring Set Oversize - 0.020

The MAHLE Original 42047CP.020 is a premium oversize piston ring set engineered to OEM specifications for reliable engine rebuilds. Sized at +0.020 inch oversize, this set is designed to restore proper sealing, reduce blow-by, and control oil consumption in worn or bored cylinders. MAHLE Original is a trusted original equipment manufacturer (OEM) supplier to some of the world's leading engine producers, and this ring set reflects that same standard of quality.

Key Features:

• Pre-lapped rings seat immediately upon startup, virtually eliminating traditional break-in time
• CP-20 oil ring assembly features an exclusive 20-degree ear angle for optimal side seal against the cylinder wall
• Special chemical polish on the oil ring expander promotes enhanced oil drain-back
• Barrel-faced compression ring contact area improves compression efficiency and reduces blow-by
• CNC-controlled gap chamfer on compression rings optimizes sealing and minimizes combustion gas leakage
• Intermediate rings feature a reverse twist design for superior groove side sealing and taper race machining for improved contact
• Ring materials, coatings, and tension are optimized for reduced friction and extended service life
• +0.020 in. oversize sizing intended for engines that have been bored or honed beyond standard dimensions

MAHLE Original piston ring sets are a trusted choice among professional engine builders seeking installer-friendly components that deliver consistent, long-lasting performance. This set meets or exceeds OEM specifications for fit, function, and durability.