What does the '.020' in the part number mean?

The '.020' indicates that these piston rings are 0.020 inches undersize. This is a common size needed when the engine cylinders have been bored out during a rebuild to clean up wear or increase displacement.

Why is a moly coating important for piston rings?

The moly coating acts as a dry lubricant. It helps the rings seat properly against the cylinder walls during the engine break-in period and continues to reduce friction throughout the life of the engine, which can also help minimize oil consumption.

Are these rings compatible with all 4.1L engines from 1963-2000?

This set is designed for the 4.1L engine found in many GM and Jeep vehicles during that period. It's always best to verify your specific vehicle's engine code and consult a service manual to ensure compatibility before purchasing.

Mahle OE Piston Rings Moly Ring Set 40514CP.020

Name: Mahle Rings GM/JEEP 4.1L 63-00 Moly Ring Set
Brand: Mahle OE
Price: 46.02 USD
Availability: InStock

Mahle Rings GM/JEEP 4.1L 63-00 Moly Ring Set

$46.02

On Backorder

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

Mahle Rings GM/JEEP 4.1L 63-00 Moly Ring Set. Reduces friction and oil consumption for longer engine life.

Key Features

Fits 1963-2000 GM and Jeep 4.1L engines.
This is a 0.020 inch undersize ring set.
Features a moly coating for improved seating and reduced friction.
Designed to minimize engine oil consumption.
Built to meet original equipment requirements for durability and performance.
Mahle OE brand piston rings.

Secure CheckoutFast Shipping631-982-0042

Will this fit your vehicle?

Product Details

This Mahle Moly Ring Set is designed to be 0.020 inches undersize, a common requirement when rebuilding engines that have been bored out. These piston rings are built to meet original equipment specifications, focusing on reducing friction and minimizing oil consumption. They are made with a moly coating, which helps them seat properly against the cylinder wall and provides a longer service life compared to plain cast iron rings. This set is a solid choice for anyone rebuilding a GM or Jeep 4.1L engine from 1963 through 2000.

Mahle's approach to piston ring technology aims to improve engine efficiency and durability. The moly coating on these rings is a key feature; it's a dry lubricant that helps prevent scuffing during the critical break-in period and continues to offer reduced friction throughout the engine's life. This attention to detail in materials and design helps ensure that your engine runs smoothly and consumes less oil, contributing to overall better performance and longevity.

This ring set fits a wide range of vehicles, including popular models like the Chevrolet C10 Pickup, Chevrolet Camaro, and Jeep CJ5. When you're rebuilding an engine, using well-made components like these Mahle rings is crucial for achieving reliable results. Always refer to your vehicle's specific service manual for detailed installation procedures and break-in recommendations.