MAHLE 42146CP.020 Engine Piston Ring Set Oversize - 0.020

The MAHLE 42146CP.020 is a complete engine piston ring set manufactured to OEM specifications by MAHLE Original, one of the world's leading suppliers of engine components for automotive and light-duty applications. The .020 suffix designates a 0.020-inch (0.508mm) oversize, designed for use in engines that have been bored or honed to the corresponding oversize dimension during an engine rebuild or overhaul.

Key Features:

• 0.020" Oversize — engineered for engines bored to 0.020" over standard bore diameter
• OEM-quality materials — manufactured using premium cast iron, ductile iron, or steel alloys depending on ring position and application
• Complete ring set — includes compression rings and oil control ring assembly for all cylinders in the application
• Precision tolerances — tight gap and radial depth tolerances ensure proper sealing, compression retention, and oil control
• Surface treatments — rings feature appropriate coatings (such as chrome, nitride, or molybdenum) for enhanced wear resistance and break-in performance
• MAHLE Original engineering — same design standards used in OEM production builds worldwide

MAHLE piston ring sets are a trusted choice for professional engine builders and rebuilders. Proper ring installation, including checking end gap and ensuring correct orientation of directional rings, is recommended for optimal engine performance and longevity.