Mahle OE Moly Ring Set

2009–2017 Chrysler Dodge Ram Jeep 5.7L Hemi / 3.6L V6

Part #: 42108CP.020

Overview

The Mahle OE Moly Ring Set is engineered to meet or exceed original equipment specifications for a wide range of Chrysler, Dodge, Ram, and Jeep vehicles equipped with 5.7L Hemi and 3.6L V6 engines from 2009 to 2017. Designed for professional mechanics and automotive enthusiasts alike, this piston ring set delivers superior sealing performance, reduced friction, and enhanced durability. Mahle’s advanced technology ensures optimal engine efficiency, lower oil consumption, and extended service life, making it an ideal choice for engine rebuilds or performance upgrades.

Whether you are restoring a classic muscle car or maintaining a modern truck, these piston rings provide reliable performance and longevity under demanding conditions.

Key Features

Mahle OE piston rings incorporate cutting-edge design and materials to maximize engine performance and durability. Key features include:

• OE-quality construction that meets stringent original equipment standards
• Advanced molybdenum coating for superior wear resistance and reduced friction
• Optimized ring mass to improve engine responsiveness and reduce mechanical losses
• Precision manufacturing for consistent ring gap and perfect cylinder sealing
• Minimized oil consumption to maintain cleaner combustion and reduce emissions
• Compatibility with a broad range of Chrysler, Dodge, Ram, and Jeep engines including Hemi V8s and Pentastar V6s
• Engineered to withstand high temperatures and pressures typical of performance and heavy-duty applications
• Longer service life compared to standard piston rings, reducing maintenance frequency

Construction & Design

Mahle OE piston rings are crafted from premium-grade steel alloys and feature a molybdenum-based coating that enhances durability and wear resistance. This coating reduces friction between the piston ring and cylinder wall, which helps improve fuel efficiency and engine longevity. The rings are precision-machined to exact tolerances, ensuring a perfect fit and optimal sealing performance. The design focuses on balancing ring tension and flexibility to maintain consistent contact with the cylinder bore, preventing blow-by and oil leakage.

Each ring set undergoes rigorous quality control to ensure reliability under the demanding conditions of both street and performance driving.

Installation & Fitment

The Mahle OE Moly Ring Set is a direct replacement for factory piston rings on compatible 5.7L Hemi and 3.6L V6 engines, requiring no modifications for installation. It is suitable for professional engine rebuilds and can be installed using standard engine assembly procedures. Proper ring gap measurement and cylinder honing are recommended to achieve optimal sealing and performance. This ring set fits a wide range of vehicles including Dodge Ram 1500, 2500, 3500, Jeep Grand Cherokee, Chrysler 300, Dodge Charger, Dodge Challenger, and Jeep Commander models from 2009 through 2017.

What's Included

• Complete set of molybdenum-coated piston rings for one engine
• Compression rings and oil control rings designed for precise fitment
• Installation instructions and specifications for ring gap and orientation

Ideal For

This piston ring set is ideal for:

• Engine rebuilders seeking OE-quality replacement parts
• Performance enthusiasts upgrading or maintaining Hemi and Pentastar engines
• Professional mechanics performing maintenance or repairs on Chrysler, Dodge, Ram, and Jeep vehicles
• Owners looking to reduce oil consumption and improve engine efficiency
• Heavy-duty truck operators requiring durable components for diesel and gasoline engines

MAHLE Aftermarket supplies a broad range of OE-quality engine and service components—engine parts, filters, gaskets, and thermal management—supporting everything from stock maintenance to performance-minded rebuilds. It’s a trusted source when builders want reputable engineering and consistent quality for refreshes, reliability upgrades, and daily-driven performance projects.