MAHLE 41874CP.030 Premium Plasma-Moly Piston Ring Set Over - 0.030

The MAHLE 41874CP.030 is a premium replacement piston ring set engineered to OE form, fit, and function for 4-cylinder engines at a 0.030-inch oversize bore. As one of the world's largest OE piston ring manufacturers, MAHLE brings factory-level quality and the latest ring technology to every engine rebuild application.

Key Features:

• Pre-Lapped Design: Ring sets are pre-lapped to seat immediately, virtually eliminating engine break-in time and simplifying installation
• SAE 9254 High Alloy Steel Base Material: Delivers higher tensile and yield strength, extended fatigue resistance, and increased material hardness for long service life
• Plasma-Moly Top Compression Ring: Barrel-faced contact surface for efficient combustion sealing and a CNC-controlled gap chamfer to optimize compression and minimize blow-by
• Reverse Twist Intermediate Ring: Taper race machining enhances cylinder wall contact and groove side sealing for superior combustion gas management and top ring stability
• CP-20 Oil Control Ring Assembly: Features an exclusive 20-degree ear angle for maximum side seal against the cylinder wall, plus a specially chemically polished expander for enhanced oil drain-back
• Optimized Ring Tension: Materials, coatings, and tension are calibrated to reduce friction, minimize oil consumption, and extend engine life
• 0.030-Inch Oversize: Designed for use with cylinders bored and honed to 0.030 inches over the standard dimension

MAHLE piston rings meet or exceed OE specifications and are the preferred choice of professional engine builders seeking reliable, long-lasting performance. This set is sold as a complete ring set for one engine.