MAHLE 41925CP Original Moly Piston Ring Set 4-Cylinder Engine

The MAHLE Original 41925CP is a premium molybdenum (moly) piston ring set engineered to OE standards for reliable engine sealing and long-term performance. As one of the world's largest OE piston ring manufacturers, MAHLE brings factory-level engineering to its aftermarket replacement ring sets, making this an ideal choice for engine rebuilds and piston ring replacements.

Key Features:

• OE Form, Fit & Function: Designed to meet or exceed original equipment specifications for precise fitment and reliable performance
• Moly (Molybdenum) Ring Coating: Plasma-moly face coating reduces friction, improves break-in, and extends service life under demanding conditions
• SAE 9254 High Alloy Steel Construction: Provides higher tensile and yield strength, extended fatigue resistance, and increased material hardness
• Pre-Lapped Design: Rings are pre-lapped to seat immediately upon installation, virtually eliminating break-in time
• Barrel-Faced Compression Rings: CNC-controlled gap chamfer optimizes compression and reduces blow-by for improved combustion efficiency
• Reverse Twist Intermediate Rings: Taper race machining enhances groove-side sealing and cylinder wall contact
• CP-20 Oil Ring Assembly: Features an exclusive 20-degree ear angle for superior side sealing against the cylinder wall, plus a chemically polished expander for enhanced oil drain-back
• Optimized Ring Tension: Materials, coatings, and tension are balanced to minimize friction while maximizing sealing and service life

MAHLE Original piston ring sets are engineered to address the demands of today's high-output engines, including increased operating temperatures, higher combustion pressures, and strict emissions standards. This set is ideal for engine rebuilders and technicians looking for a straightforward, installer-friendly ring set that delivers consistent, OE-quality results.