MAHLE 41731.030 Engine Piston Ring Set - 0.030 in. Oversize

The MAHLE 41731.030 is an OE-quality replacement engine piston ring set sized at 0.030 inches oversize, engineered to restore proper compression, minimize oil consumption, and extend engine service life. As one of the world's largest original equipment piston ring manufacturers, MAHLE designs these rings to meet or exceed the same specifications found in factory assemblies.

Key Features:

• OE Form, Fit & Function: Engineered to OE requirements for a precise, reliable fit during engine rebuilds
• Pre-Lapped Design: Rings are pre-lapped to seat immediately, virtually eliminating extended break-in time
• Upper Compression Ring: Cast iron or ductile cast iron construction with a positive twist and barrel face for rapid seating and efficient compression sealing
• Intermediate (Second) Ring: Reverse twist design delivers superior groove side sealing and improved combustion gas management to reduce blowby
• CP-20 Oil Control Ring Assembly: Features an exclusive 20-degree ear angle for optimal side sealing against the cylinder wall, plus a chemically polished expander for enhanced oil drainback
• Optimized Tension & Coatings: Ring materials, surface coatings, and tension values are application-matched to minimize friction and maximize service life
• 0.030 in. Oversize: Designed for bores that have been machined 0.030 inches over standard for use during engine rebuilds and overhauls

MAHLE Original piston ring sets are the choice of professional engine builders seeking installer-friendly components that deliver consistent performance. Cross-reference part numbers may include Sealed Power, Hastings, and other leading ring set manufacturers for this application.