What does '.020in' mean for these piston rings?

The '.020in' indicates that these piston rings are 0.020 inches undersize. This means they are intended for use in engine cylinders that have been bored out to this specific dimension during an engine rebuild or overhaul.

What is the benefit of the moly coating on these rings?

The moly (molybdenum) coating on these piston rings helps to reduce friction and improve wear resistance. It also aids in the initial seating process, ensuring a good seal between the ring and the cylinder wall from the start.

Are these rings compatible with all 6.7L Cummins engines?

These rings are specifically listed for 2007-2010 Dodge Ram 6.7L Cummins engines and other heavy-duty applications. It's important to verify your specific engine model and year, and confirm the required piston ring size (.020in undersize) before purchasing.

Mahle OE Piston Ring Set Moly .020in S42140.020

Name: Mahle OE 09-11 Dodge Cummins 6.7L Turbo Diesel .020in Moly Ring Set
Brand: Mahle OE
Price: 48.46 USD
Availability: InStock

Mahle OE 09-11 Dodge Cummins 6.7L Turbo Diesel .020in Moly Ring Set

$48.46

Only 5 left in stock

Mahle OE Moly Piston Ring Set, .020in undersize. Fits 07-10 Dodge Ram 6.7L Cummins and many other heavy-duty trucks.

Key Features

Fits 2007-2010 Dodge Ram 2500 and 3500, 2008 Dodge Ram 4500 and 5500, 2008-2009 Ford F-650 and F-750, and various Kenworth and Peterbilt models.
This is a .020 inch undersize piston ring set.
Features a moly coating for improved wear resistance and initial seating.
Designed to reduce engine friction and oil consumption.
Built to meet OE requirements for durability and performance.

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Will this fit your vehicle?

Product Details

What you get here is a set of Mahle OE Moly Piston Rings, specifically sized at .020 inches undersize. These rings are built to meet the demands of your engine, aiming to reduce friction and oil consumption while providing a longer service life. They are designed to work with engines like the 6.7L Cummins found in Dodge Ram trucks from 2007-2010, as well as many other heavy-duty applications.

Mahle has engineered these rings with advanced technology, focusing on minimizing internal engine friction and reducing the overall mass of the rings. This approach not only helps your engine run more efficiently but also contributes to minimizing how much oil it burns, which is crucial for maintaining engine health over time. The moly coating on these rings helps with initial seating and wear resistance, giving them a solid start and contributing to their longevity.

This set is a .020 inch undersize, meaning it's intended for engines where the cylinder bores have been machined to this specific dimension during a rebuild. Always confirm your engine's bore size and specifications before ordering to ensure you get the correct fitment for your project.