MAHLE 42273CP.020 Premium Engine Piston Ring Set Oversize - 020

The MAHLE 42273CP.020 Premium Piston Ring Set is an .020 inch oversize ring set engineered to restore compression, reduce blow-by, and provide superior oil control in rebuilt engines. MAHLE Original piston rings are the most technically advanced piston rings in the industry, driven by OE requirements to reduce friction and ring mass while minimizing engine oil consumption and providing longer service life.

Key Features:

• Pre-lapped rings that seat immediately, virtually eliminating break-in time
• Barrel-faced compression rings with CNC-controlled gap chamfer to optimize compression and reduce blow-by
• Reverse twist intermediate rings for better groove side sealing and taper race machining to enhance contact
• CP-20 oil ring assemblies with 20 degree ear angle for optimal cylinder wall sealing and chemically polished expander for enhanced oil drain back
• Ring materials, coatings, and tension optimized for reduced friction and extended life
• .020 inch oversize for engines requiring bore cleanup during rebuild

MAHLE is the world's leading manufacturer of more than 100,000 OE and aftermarket parts, including pistons and piston rings, bringing decades of engineering expertise to every ring set. This complete set provides the precision and reliability that professional engine builders and technicians trust for quality rebuilds.