Mahle 42155CP Engine Piston Ring Set

Overview

Mahle 42155CP is a premium engine piston ring set built for standard-bore applications with a 3.7795 in bore diameter. It uses a shallow groove design and advanced ring materials to support consistent sealing, reduced friction, and controlled oil use in service.

Compatible With Chrysler 200, Chrysler 300, Dodge Challenger, Dodge Charger, Dodge Grand Caravan, Dodge Journey, Jeep Wrangler, Ram 1500, Ram ProMaster 1500, Ram ProMaster 2500, and Ram ProMaster 3500 applications across the listed model years. This part number, 42155CP, is also a fitment match for Chrysler Town & Country, Jeep Grand Cherokee, Dodge Durango, Ram C/V, and Dodge Avenger applications in the years shown.

Key Features

• Standard oversize specification for confirmed OE-style applications
• Plasma-moly face coating for wear resistance at the ring face
• Carbon steel top ring for strength and stable sealing
• Cast iron second ring for dependable cylinder control
• Stainless steel oil ring assembly for corrosion resistance
• Premium grade construction with shallow groove design

Detailed Description

Mahle 42155CP is engineered around OE requirements for modern gasoline engines that need precise ring control, low friction, and long service life. The ring pack combines a carbon steel top ring, cast iron second ring, and stainless steel oil ring assembly, with a plasma-moly face coating to help manage wear under operating heat and load. The 3.7795 in bore diameter and standard sizing make it a direct match for the listed Chrysler, Dodge, Jeep, and Ram applications.

Mahle piston rings are developed with a focus on reducing ring mass while helping minimize engine oil consumption. For Chrysler 200 and Dodge Charger service, as well as Ram 1500 and Jeep Wrangler engine work, 42155CP provides the material mix and ring profile needed for accurate cylinder sealing and oil control. This part number, 42155CP, is intended for the specific fitments shown and should be matched to bore size and ring groove requirements before installation.

What It Helps Address

• Oil consumption caused by worn or ineffective piston rings
• Loss of cylinder sealing that can reduce compression
• Excess friction from aged ring surfaces
• Ring wear in high-mileage engine rebuilds
• Inconsistent oil control in standard-bore applications

Installation Notes

Verify bore diameter, ring groove dimensions, and engine code before assembly. Clean the piston ring grooves thoroughly and confirm ring end gaps against the engine builder’s specifications. Because fitment is application-specific, use the listed vehicle coverage for Chrysler, Dodge, Jeep, and Ram models only.

Quality Assurance

Mahle develops piston rings to OE requirements and uses advanced materials and coatings to support durability, low friction, and controlled oil use. Part number 42155CP reflects that engineering approach for the confirmed applications listed above.