What does the 0.020" undersize mean for these piston rings?

The 0.020 inch undersize indicates that these rings are slightly smaller in diameter than standard rings. This is typically used when cylinder walls have been machined (honed) to a slightly larger diameter to account for wear or to achieve a specific surface finish for the rings.

Are these rings suitable for high-mileage engines?

Yes, Mahle piston rings are known for their durability and are designed to minimize oil consumption and extend service life, making them a good choice for high-mileage engines undergoing a rebuild.

What is the benefit of ceramic chrome and chrome plating on piston rings?

The ceramic chrome top ring offers enhanced wear resistance and can better withstand the high temperatures of turbocharged engines. The chrome ring helps reduce friction between the piston ring and the cylinder wall, contributing to smoother operation and longer component life.

Mahle Piston Ring Set 0.020" Undersize S42221.020

Name: Mahle Rings Cummins B-Series Turbocharged Ceramic Chrome Top Ring Chrome Ring Set
Brand: Mahle OE
Price: 30.46 USD
Availability: InStock

Mahle Rings Cummins B-Series Turbocharged Ceramic Chrome Top Ring Chrome Ring Set

$30.46

Only 4 left in stock

Mahle OE piston ring set, 0.020 inch undersize. For Cummins B-Series turbocharged diesel engines. Part# S42221.020. Verified fitment. Fast shipping.

Key Features

Fits a wide range of Dodge and Ford trucks with Cummins B-Series turbocharged diesel engines.
Features a ceramic chrome top ring for improved wear resistance and heat handling.
Includes a chrome ring for reduced friction against the cylinder wall.
Rings are 0.020 inch undersize, intended for use with cylinders honed to match.
Designed to minimize engine oil consumption and extend service life.
Built to meet OE requirements for performance and durability.

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Will this fit your vehicle?

Product Details

When you're rebuilding the top end of your Cummins B-Series turbocharged diesel, getting the piston rings right is key to sealing the combustion chamber and controlling oil. This Mahle OE ring set is designed to help you achieve that. It's a popular choice for mechanics working on a variety of Dodge and Ford trucks from the late 80s through the early 2000s.

This particular set features a ceramic chrome top ring and a chrome ring, which are known for their durability and ability to handle the heat and pressure found in turbocharged engines. The ceramic chrome offers improved wear resistance, while the chrome plating helps reduce friction against the cylinder wall. This combination aims to minimize oil consumption and extend the life of your engine components. The rings are 0.020 inch undersize, which is important to note if you're re-honing your cylinders to match.

Mahle is a well-known name in engine components, and these rings are built to meet the demands of OE requirements. They are designed to reduce friction and ring mass, contributing to overall engine efficiency and performance. If you're in the process of a rebuild, this set is a solid option to consider for getting your engine sealed up properly.