MAHLE 41874CP.020 Original Premium Plasma-Moly Engine Piston Ring Set

The MAHLE Original 41874CP.020 is a premium plasma-moly engine piston ring set engineered to OE form, fit, and function standards. The .020 suffix denotes a 0.020-inch oversized bore, suitable for engines that have been bored or honed during a rebuild.

MAHLE is one of the world's largest OE piston ring manufacturers, and these rings reflect that engineering heritage. Constructed from SAE 9254 high-alloy steel base material, they offer superior tensile and yield strength, extended fatigue resistance, and increased hardness compared to standard ring materials.

Key Features:

• Pre-lapped design seats immediately, virtually eliminating traditional break-in time
• Plasma-moly top compression rings with barrel-faced contact surface for improved compression efficiency
• CNC-controlled gap chamfer on compression rings to optimize sealing and minimize blow-by
• Reverse-twist intermediate (second) rings for enhanced groove side sealing and improved oil control
• Second rings feature taper race machining to promote better cylinder wall contact
• CP-20 oil ring assemblies with exclusive 20-degree ear angle for maximum side seal in the oil ring groove
• Special chemical polish on the oil ring expander promotes enhanced oil drain-back
• Ring materials, coatings, and tension are all optimized per application for reduced friction and extended service life
• Sold as 4 ring sets (full engine complement for a 4-cylinder)
• UPC: 027067353719

MAHLE Original piston ring sets deliver the precision and quality demanded by professional engine builders, making them a trusted choice for engine rebuilds and performance restorations.