MAHLE 42106CP.030 Premium Plasma-Moly Piston Ring Set Over - 0.030

The MAHLE 42106CP.030 is a premium-grade engine piston ring set manufactured to original equipment specifications. Designed for a +0.030" oversize bore, this CP-series ring set delivers precise sealing, reduced friction, and long service life in demanding engine rebuild applications.

MAHLE piston ring sets are pre-lapped at the factory to seat immediately upon installation, virtually eliminating traditional break-in time. Ring materials, coatings, and tension values are all engineered to minimize friction and reduce engine oil consumption while extending overall service life.

Key Features:

• Plasma-Moly Top Compression Ring — Carbon steel construction with plasma-moly facing for superior scuff resistance and durability
• Barrel-Faced Compression Ring Contact Area — Promotes efficient compression and reduces blow-by
• CNC-Controlled Gap Chamfer — Optimizes compression sealing from the first start
• Reverse-Twist Intermediate Ring — Taper-race machined for enhanced 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; chrome-faced stainless steel rails with chemical-polished expander for optimized oil drain-back
• +0.030" Oversize — Engineered for bores machined 0.030" over standard diameter
• OE-Driven Design — Engineered to meet or exceed original equipment requirements
• Installer-Friendly Construction — Designed so rings cannot be installed incorrectly, saving time during assembly

MAHLE is a global leader in piston ring technology, supplying OEM and aftermarket customers worldwide. The 42106CP.030 ring set is the professional engine builder's choice for a reliable, high-quality rebuild.