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

The '.040' in the part number indicates that this is a 0.040 inch undersize piston ring set. This means the rings are slightly smaller than standard size to accommodate cylinders that have been bored out by 0.040 inches during an engine rebuild.

What is the benefit of moly coating on piston rings?

Moly coating on piston rings is known for its ability to reduce friction between the ring and the cylinder wall. This not only helps improve engine performance but also enhances wear resistance, contributing to a longer lifespan for both the rings and the cylinder bore.

Are these rings suitable for a performance build?

These Mahle OE rings are designed to meet original equipment specifications, focusing on durability, friction reduction, and oil control. While they are well-built for reliable engine operation, they are not specifically marketed as performance racing rings.

Mahle OE Piston Rings 40069CP.040 - Mopar 318 5.2L

Name: Mahle Rings Case Checker 318 Eng 59-66 Chry 318 5.2L Eng 75-89 Chry Ind Engs Moly Ring Set
Brand: Mahle OE
Price: 103.76 USD
Availability: InStock

Mahle Rings Case Checker 318 Eng 59-66 Chry 318 5.2L Eng 75-89 Chry Ind Engs Moly Ring Set

$103.76

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 Chrysler 318 5.2L engines. Reduces friction and oil consumption for longer engine life.

Key Features

Fits Chrysler 318 5.2L engines from 1959-1991.
Moly coating reduces friction and improves wear resistance.
Designed to minimize engine oil consumption.
Helps ensure a longer service life for the engine.
This is a 0.040 inch undersize ring set.
Meets original equipment requirements for technical advancement.

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Will this fit your vehicle?

Product Details

If you're rebuilding a Chrysler 318 or 5.2L engine from 1959 through 1991, these Mahle OE Moly Ring Sets are a solid choice. Mahle designs these rings to meet the demanding requirements of original equipment, focusing on reducing friction and minimizing oil consumption. This attention to detail helps ensure a longer service life for your engine rebuild.

These piston rings are built with moly coatings, which are known for their ability to reduce friction and improve wear resistance. This means less drag on your pistons and better sealing against the cylinder walls, contributing to improved engine performance and efficiency. The design also aims to keep oil consumption in check, a common concern in older or rebuilt engines.

This particular set is sized at 0.040 inches undersize, which is important to note for your engine build. Always ensure your cylinder bores are machined to match the ring size for proper fitment and sealing. This set fits a wide range of vehicles, including many Chrysler, Dodge, and Plymouth models from the late 50s through the early 90s.