What does the '0.040' in the part number mean?

The '.040' in the part number indicates that this ring set is 0.040 inches undersize. This is typically used when engine cylinders have been bored out to a larger diameter during a rebuild.

What is the benefit of a moly coating on piston rings?

The moly coating on these Mahle rings helps to reduce friction between the ring and the cylinder wall. It also aids in the initial break-in process, helping the rings seat properly for optimal sealing and performance.

Are these rings CARB approved?

No, these rings are not CARB approved and cannot be shipped to California.

Mahle Piston Rings Moly Ring Set 42108CP.040

Name: Mahle Rings Chrysler / Dodge Trk 5.7L Hemi Eagle Eng 2009 - Up Moly Ring Set
Brand: Mahle OE
SKU: mahle-oe-mahle-rings-chrysler-dodge-trk-5-7l-hemi-eagle-eng-2009-up-moly-ring-se-t14-50290
Price: 140.88 USD
Availability: BackOrder

Mahle Rings Chrysler / Dodge Trk 5.7L Hemi Eagle Eng 2009 - Up Moly Ring Set

$140.88

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Mahle OE Moly Ring Set for 5.7L Hemi engines. Reduces friction and oil consumption for longer engine life.

Key Features

Fits 2009 and newer Chrysler, Dodge, and Ram trucks with the 5.7L Hemi engine.
Moly coating aids in break-in and provides a durable, low-friction surface.
Designed to reduce engine oil consumption.
Helps minimize friction for improved engine efficiency.
Built to OE requirements for reliable service life.
This is a 0.040 inch undersize ring set.

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Will this fit your vehicle?

Product Details

If you're rebuilding the top end of your Chrysler, Dodge, or Ram truck with a 5.7L Hemi engine, a fresh set of piston rings is crucial for proper sealing and performance. These Mahle Moly Ring Sets are designed to meet the demands of modern engines, focusing on reducing friction and minimizing oil consumption for a longer service life.

Mahle has a reputation for bringing advanced piston ring technology to the market, driven by the requirements of original equipment manufacturers. This means you're getting rings that are built to help your engine run efficiently, with a focus on reducing internal drag and keeping oil where it belongs. The moly coating on these rings helps with initial break-in and provides a durable surface for consistent performance over time. This set is 0.040 inch undersize, which is important to note if you're machining your pistons or cylinders.

This set fits a wide range of vehicles, including many Chrysler 300s, Dodge Challengers, and Ram 1500s from 2009 and up. Make sure to check the full fitment list to confirm compatibility with your specific application.