MAHLE 41475CP.020 Original Premium Engine Piston Ring Set +0.020 Over Bore

The MAHLE 41475CP.020 is a premium Original replacement engine piston ring set machined to a +0.020-inch overbore specification, making it the correct choice for engines that have been bored and honed 0.020" over standard. MAHLE Original ring sets are engineered to OEM standards and trusted by professional engine builders for reliable, long-lasting performance.

Key Features:

• Plasma-Moly Top Ring: Upper compression ring features a barrel-faced contact area with a plasma-moly inlay for fast seating, reduced friction, and excellent wear resistance
• Reverse Twist Second Ring: Intermediate ring uses a reversed twist taper-faced design for superior groove-side sealing and enhanced contact with the cylinder wall
• CP-20 Oil Ring Assembly: The exclusive CP-20 oil control ring features a 20-degree ear angle for optimal side sealing against the cylinder wall, with a chemically polished expander for improved oil drain-back
• Pre-Lapped Finish: Rings are pre-lapped from the factory to promote rapid, uniform seating and virtually eliminate extended break-in periods
• CNC-Controlled Gap Chamfer: Precision chamfering on compression rings optimizes cylinder seal and minimizes blow-by
• +0.020" Overbore Size: Designed for cylinders bored and honed to 0.020" over the standard bore diameter
• Premium Materials: Upper compression ring in plasma-moly ductile iron; second ring in cast iron; oil ring components in stainless steel

MAHLE Original piston ring sets are engineered for installer-friendly fitment, with optimized ring tension and coatings tuned for reduced friction and extended service life. This set is the preferred choice for engine rebuilders seeking a direct OEM-quality replacement with the precision expected from a Tier 1 original equipment supplier.