What does 'file fit' mean for these piston rings?

File fit rings mean you need to carefully file the end gap of the rings to match your engine's specific cylinder bore size. This allows for a precise, custom fit that helps ensure proper sealing and performance.

What is the purpose of the different ring sizes (1.0mm, 1.0mm, 2.0mm)?

The top and second rings are typically 1.0mm, designed to seal the combustion chamber. The 2.0mm ring is the oil control ring, which scrapes excess oil from the cylinder walls to prevent it from entering the combustion chamber.

Can these rings be used on any engine?

These rings are designed for a specific bore size (4.070in +.005in) and are for single cylinder applications. They are not CARB approved and cannot be shipped to California. Always verify they match your engine's requirements.

Mahle Piston Ring Set 4.070in +.005in 4075MS-112-1

Name: Mahle MS 4.070in +.005in 1.0mm 1.0mm 2.0mm File Fit Ring - Single
Brand: Mahle
SKU: mahle-mahle-ms-4-070in-005in-1-0mm-1-0mm-2-0mm-file-fit-ring-single-t14-679652
Price: 32.15 USD
Availability: BackOrder

Mahle MS 4.070in +.005in 1.0mm 1.0mm 2.0mm File Fit Ring - Single

$32.15

On Backorder

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

Mahle file fit piston rings for a single cylinder. Set includes 1.0mm, 1.0mm, and 2.0mm rings sized at 4.070in +.005in.

Key Features

Fits 4.070 inch bore with a +.005 inch overbore.
Includes a 1.0mm top ring, a 1.0mm second ring, and a 2.0mm oil control ring.
Standard tension rings for consistent sealing.
File-fit design allows for precise end gap adjustment.
Designed for single cylinder applications.
From Mahle, a popular manufacturer of engine components.

This is a universal piston ring set designed for a 4.070 inch bore with a +.005 inch overbore. Always confirm compatibility with your specific engine build.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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Product Details

These Mahle piston rings are sized at 4.070 inches with a +.005 inch overbore, meaning they're designed for engines that have been honed out slightly beyond their original bore size. The ring set features a 1.0mm top ring, a 1.0mm second ring, and a 2.0mm oil control ring, all with standard tension. This specific configuration is for a single cylinder, making it ideal for rebuilding or replacing rings on one cylinder at a time.

Mahle is a well-known name in engine components, and these file-fit rings offer a practical solution for engine builders. File-fit rings require you to carefully file the end gap to the precise specification for your engine's bore, allowing for a custom fit that can help ensure a good seal. This attention to detail is crucial for proper engine performance and longevity.

Keep in mind that these rings are not CARB approved and cannot be shipped to California. Always refer to your engine's specific service manual for correct installation procedures and ring gap specifications.