MAHLE 41935CP.030 Premium Engine Piston Ring Set Oversize Plasma-Moly - 0.030

The MAHLE 41935CP.030 is a premium OEM-quality engine piston ring set engineered to meet or exceed original equipment specifications. Sized at +0.030" oversize, this set is designed for engines that have been bored during a rebuild, restoring proper cylinder sealing, compression, and oil control to factory tolerances.

MAHLE's CP-series replacement ring sets are built with a multi-material construction: an upper compression ring (UCR) of carbon steel with a plasma-moly facing, a lower compression ring (LCR) of cast iron with a tapered hook groove (THG) design, and a stainless steel oil control ring (OCR) with chrome facing using MAHLE's exclusive CP-20 shallow groove design. Axial heights are 1.5mm (UCR), 1.5mm (LCR), and 3.0mm (OCR).

Key Features:

• Plasma-moly top ring facing for reduced friction and superior break-in characteristics
• Barrel-faced compression ring contact area for more efficient compression sealing
• CNC-controlled gap chamfer to optimize compression and reduce blow-by
• Tapered hook groove (THG) second ring for superior oil control and improved top ring stability
• CP-20 oil ring assembly with a 20-degree ear angle for optimal side sealing against the cylinder wall
• Pre-lapped design seats immediately, virtually eliminating traditional break-in time
• Ring materials and tension optimized for reduced friction and extended service life
• Engineered to minimize engine oil consumption and restore compression to OE standards
• Premium material grade — meets or exceeds OE specifications

MAHLE is a global leader in piston ring technology, supplying OEM-level components to virtually every major automotive and engine manufacturer. The MAHLE Aftermarket division brings that same engineering expertise to the replacement parts market, making this ring set the trusted choice of professional engine builders and rebuilders worldwide.