MAHLE 42279CP.020 Engine Piston Ring Set Over Standard Bore - 020

The MAHLE 42279CP.020 is a precision-engineered engine piston ring set designed to restore proper compression, reduce oil consumption, and return engine performance to OEM specifications. The .020 oversize designation indicates these rings are sized for cylinders that have been bored 0.020 inches over standard, making them an ideal choice for engine rebuilds and machine shop applications.

MAHLE is a globally recognized OEM supplier and aftermarket leader in engine components, manufacturing piston rings to the same exacting tolerances used in original equipment production. This set is built to deliver reliable sealing performance, heat transfer, and long service life.

Key Features:

• Sized for 0.020" (0.50mm) overbore cylinders — ideal for freshly honed or bored engines
• Engineered to OEM tolerances for precise fit and consistent ring gap
• High-quality materials provide excellent wear resistance and heat dissipation
• Compression rings designed to maximize cylinder sealing and restore lost power
• Oil control ring included to minimize oil consumption and blow-by
• Phosphate, chrome, or nitride coatings (as applicable) for extended ring life
• Manufactured by MAHLE — a trusted Tier 1 OEM supplier to major engine manufacturers worldwide

The MAHLE 42279CP.020 piston ring set is an excellent choice for professional engine rebuilders and performance shops seeking OEM-quality components for oversize bore applications. Each set is packaged per cylinder or as a complete engine set depending on the application — verify your cylinder count and bore size before ordering.