MAHLE 50784CP.020 Engine Piston Ring Set Oversize - 0.020

The MAHLE 50784CP.020 is a standard-replacement engine piston ring set engineered to 0.020-inch oversize specifications for use during engine rebuilds requiring cylinder boring. As part of MAHLE's Original line — formerly marketed under the Perfect Circle brand — this ring set is manufactured to OE-equivalent standards and reflects MAHLE's extensive original equipment development expertise.

Key Features:

• 0.020-inch oversize — designed for use with cylinders bored to 0.020 inches over standard diameter
• High tensile and yield strength with excellent hardness and low ring mass for long service life
• Premium material construction — upper and lower compression rings in cast iron with plasma-moly or chrome facing for reduced friction and improved cylinder conformability
• CP-20 oil ring assembly featuring a 20-degree ear angle for superior side sealing against the cylinder wall
• Shallow oil ring groove design for enhanced oil drain-back and reduced oil consumption
• Engineered to minimize blow-by, reduce groove pound-out, and maintain consistent compression sealing
• Manufactured by MAHLE, the world's largest producer of piston rings, with direct OE-sourced technology

The MAHLE Original piston ring line is trusted by professional engine builders and automotive technicians for over 100 years. The 50784CP.020 ring set delivers OE-level sealing performance, oil economy, and durability for a reliable, long-lasting engine rebuild.