What does the '.030' in the part number signify?

The '.030' in the part number indicates that these piston rings are 0.030 inches undersize. This means they are designed for engines where the cylinder bores have been machined to a larger diameter, specifically 0.030 inches over the original bore size.

What is the E Moly coating on these piston rings?

The E Moly coating is a surface treatment applied to the piston rings. It helps with the initial break-in process of the engine, reducing wear during those critical first miles. It also contributes to the overall durability and performance of the rings over time.

Are these rings suitable for a standard bore engine?

No, these rings are specifically 0.030 inch undersize. For an engine with standard bore dimensions, you would need a standard size piston ring set. Always confirm your cylinder bore measurements before ordering rings.

Mahle OE Piston Rings 40134CP.030 - Ford 361/390

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-t14-50094
Price: 123.21 USD
Availability: BackOrder

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

$123.21

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 E Moly Piston Ring Set for Ford 361/390 engines. These 0.040 inch undersize rings help restore compression.

Key Features

Fits a wide range of Ford and Mercury vehicles from 1958-1977, including trucks, sedans, and wagons.
Designed for Ford 361 and 390 cubic inch engines, as well as Ford industrial and truck 360/390 applications.
This is a 0.040 inch undersize piston ring set, intended for engines where cylinders have been bored out.
Features an E Moly coating for improved break-in and durability.
Helps reduce friction and oil consumption for improved engine performance and longevity.
Meets original equipment requirements for technical advancement and performance.

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Will this fit your vehicle?

Product Details

When you're rebuilding the engine in your classic Ford truck, a vintage Edsel, or even a Dearborn Marine application, getting the piston rings right is key to restoring compression and ensuring a smooth-running motor. This Mahle OE E Moly Ring Set is designed for Ford 361 and 390 cubic inch engines from 1961 to 1971, as well as Ford industrial and truck applications using the 360 or 390 engines. These rings are 0.040 inch undersize, which is important if your cylinders have been bored out during the rebuild process.

Mahle is known for making technically advanced piston rings that meet original equipment requirements. They focus on reducing friction and ring mass, which helps minimize oil consumption and can lead to a longer service life for your engine. The E Moly coating on these rings is a practical detail that helps with initial break-in and provides a durable surface for consistent performance. This set is a solid option for anyone looking to get their engine back to spec with well-built components.