MAHLE 42080CP.020 Premium Engine Piston Ring Set Oversize - 0.020

The MAHLE 42080CP.020 is a premium-grade engine piston ring set in 0.020" oversize, engineered for precision fit and OE-level performance during engine rebuilds. MAHLE is one of the world's leading OE piston ring manufacturers, and this set reflects the same technology and material standards used in original equipment applications.

Key Features:

• SAE 9254 High-Alloy Steel Construction: Provides higher tensile and yield strength, extended fatigue resistance, and increased material hardness for long service life
• Plasma-Moly Top Ring Coating: Enhances cylinder wall sealing, reduces wear, and promotes faster ring seating after installation
• CP-20 Oil Control Ring Assembly: Features an exclusive 20-degree ear angle for optimal side sealing against the cylinder wall, plus a special chemical polish on the expander for enhanced oil drain-back
• Napier-Style Second Ring: Superior oil control, improved combustion gas management, better top ring stability, and reduced power loss
• OE Form, Fit, and Function: Designed as a direct replacement engineered to meet or exceed original equipment specifications
• 0.020" Oversize: Intended for engines that have been bored 0.020" over standard for rebuild applications
• Installer-Friendly Design: Engineered for straightforward installation by professional engine builders

MAHLE piston rings are driven by OE requirements — reducing friction and ring mass while minimizing engine oil consumption and delivering extended service life. The 42080CP.020 set restores proper compression, reduces blow-by, and controls oil consumption, making it the trusted choice for engine rebuilders demanding OEM-quality results.