MAHLE 42186CP.030 Premium Engine Piston Ring Set Over - 0.030

The MAHLE 42186CP.030 is a premium-grade engine piston ring set engineered to OE standards for 2.2L four-cylinder applications at +0.030" oversize bore. MAHLE is a globally recognized OE supplier to the automotive industry, and this ring set is built to the same specifications and tolerances used in original factory assemblies.

MAHLE's CP-series piston ring sets are pre-lapped at the factory, allowing rings to seat immediately and virtually eliminating traditional break-in time. Ring materials, coatings, and tension values are precisely matched to the application for reduced friction, minimized oil consumption, and extended service life.

Key Features:

• +0.030" Oversize — designed for engines bored 0.030" over standard for rebuilds and performance applications
• Compression rings feature a barrel-faced contact surface for efficient combustion sealing and a CNC-controlled gap chamfer to reduce blow-by
• Intermediate rings use a reverse-twist design for superior groove side sealing with taper-race machining to enhance cylinder wall contact
• CP-20 oil control ring assembly incorporates a 20-degree ear angle for optimal side sealing against the cylinder wall
• Chemical-polished oil ring expander promotes enhanced oil drain-back and reduced oil consumption
• OE-matched ring tension and material grades for long-term durability
• Installer-friendly design for straightforward engine assembly

The MAHLE 42186CP.030 piston ring set delivers a direct-fit, OE-quality solution for engine rebuilds requiring a 0.030" overbore. Sold as a complete set.