What does the .020 in the part number mean?

The '.020' in the part number 41870CP.020 indicates that these piston rings are 0.020 inches undersize. This is a common size for engine rebuilds, especially if the cylinders have been honed or bored.

Why is a moly coating important for piston rings?

The moly coating on these Mahle piston rings helps to reduce friction between the ring and the cylinder wall. This leads to improved engine efficiency and can also contribute to a longer service life for both the rings and the cylinder bores.

Are these rings compatible with all 4.0L engines?

This specific Mahle OE ring set is designed for the 4.0L 242ci engine found in 1996-2001 Jeep Cherokees, 1996-2004 Jeep Grand Cherokees, and 1997-2006 Jeep Wranglers. It is not CARB approved and cannot be shipped to California.

1997-2006 Jeep Wrangler Piston Rings

Name: Mahle Rings Jeep 4.0L 242 L6 Eng 1996-2002 Dodge Trk 4.0L 242 L6 Eng 1996+ Moly Ring Set
Brand: Mahle OE
SKU: mahle-oe-mahle-rings-jeep-4-0l-242-l6-eng-1996-2002-dodge-trk-4-0l-242-l6-eng-19-t14-49003
Price: 107.10 USD
Availability: BackOrder

Mahle Rings Jeep 4.0L 242 L6 Eng 1996-2002 Dodge Trk 4.0L 242 L6 Eng 1996+ Moly Ring Set

$107.10

On Backorder

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

Fits 1997-2006 Jeep Wrangler. Mahle OE Moly Ring Set for 4.0L engines, designed to reduce friction and oil consumption.

Key Features

Fits 1997-2006 Jeep Wrangler, 1996-2001 Jeep Cherokee, and 1996-2004 Jeep Grand Cherokee with the 4.0L 242ci engine.
Moly coated for reduced friction and improved wear resistance.
Designed to minimize engine oil consumption.
Built to meet original equipment requirements for durability.
This set is 0.020 inches undersize.

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Product Details

If you're rebuilding the top end of your 1997-2006 Jeep Wrangler with the 4.0L 242 inline-six engine, Mahle OE Moly Ring Sets are a solid choice. These rings are built to meet the demands of original equipment requirements, focusing on reducing friction and minimizing oil consumption for a longer service life.

Mahle engineers these rings with a moly coating, which is a practical detail that helps them slide smoothly against the cylinder wall. This smooth action not only cuts down on friction, meaning less power is lost and the engine runs a bit more efficiently, but it also helps maintain a good seal. A good seal is key to preventing oil from getting into the combustion chamber and keeping combustion pressure where it belongs. This set is specifically sized at 0.020 inches undersize, which is important to note if you're honing your cylinders.

This particular set is designed for the 4.0L 242ci engine found in various Jeep models from 1996 through 2006, including the Cherokee, Grand Cherokee, and Wrangler. Remember that these rings are not CARB approved and cannot be shipped to California.