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

The '.020' indicates that these piston rings are 0.020 inches undersize. This means they are intended for use when the engine cylinders have been bored out to a larger diameter, specifically 0.020 inches over the original bore size.

What is the benefit of molybdenum (moly) coating on piston rings?

Molybdenum coating on piston rings helps to reduce friction between the ring and the cylinder wall. It also improves the ring's durability and wear resistance, which can lead to a longer engine life and better performance.

Are these rings suitable for a performance build?

These Mahle OE rings are designed to meet original equipment manufacturer requirements, focusing on durability, friction reduction, and oil control. While excellent for a standard rebuild, for high-performance applications, you might consider rings specifically designed for those demands.

Mahle OE Piston Rings 40134CP.020 - Ford 361/390 Engines

Name: Mahle Rings Dearborn Marine Ford 361/390 Engs 61-71 Ford Ind Ford Trk 360390 E Moly Ring Set
Brand: Mahle OE
SKU: mahle-oe-mahle-rings-dearborn-marine-ford-361-390-engs-61-71-ford-ind-ford-trk-3-t14-50093
Price: 90.65 USD
Availability: BackOrder

Mahle Rings Dearborn Marine Ford 361/390 Engs 61-71 Ford Ind Ford Trk 360390 E Moly Ring Set

$90.65

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 Piston Ring Set for Ford 361/390 engines. These rings help reduce friction and oil consumption for longer engine life.

Key Features

Fits 1958-1977 Ford and Mercury vehicles with 361 and 390 cubic inch engines.
Molybdenum coating improves ring durability and reduces friction.
Designed to minimize engine oil consumption for better efficiency.
Contributes to longer engine service life.
Rings are 0.020 inch undersize for use with re-bored cylinders.
Meets original equipment manufacturer requirements for advanced piston ring technology.

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Will this fit your vehicle?

Product Details

If you're rebuilding the engine in your classic Ford or Mercury, getting the right piston rings is crucial for performance and longevity. This Mahle OE Moly Ring Set is designed for Ford 361 and 390 cubic inch engines, commonly found in vehicles from 1961 to 1971, as well as some industrial and truck applications. These rings are built to meet the demanding requirements of original equipment manufacturers, focusing on reducing internal friction and minimizing oil consumption.

Mahle has engineered these rings with molybdenum (moly) coating, which helps to improve their durability and reduce wear, especially during the critical break-in period. This advanced design contributes to a longer service life for your engine. The set includes rings that are 0.020 inches undersize, which is important to note if you are re-boring your cylinders to a specific size.

This set fits a wide range of Ford and Mercury vehicles from the late 1950s through the mid-1970s, including popular models like the Ford F-Series trucks, Galaxie, and Mercury Colony Park wagons. Ensure you check the full fitment list to confirm compatibility with your specific application.