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

File-fit rings are designed to be custom-gapped by the installer to precisely match the cylinder bore of the engine. This allows for optimal sealing and performance, especially in modified or performance engine builds. You will need a ring filer tool and your engine's service manual for correct gapping procedures.

What are the dimensions of these rings?

This set includes a 1.0mm top ring, a 1.0mm second ring, and a 2.0mm oil control ring. They are designed for a 3.552-inch bore and are +.005 inches oversize.

Can these rings be shipped to California?

No, these rings are not CARB approved and cannot be shipped to California due to emissions regulations.

Mahle Piston Ring Set 3557MS-112

Name: Mahle MS 3.552in +.005in 1.0mm 1.0mm 2.0mm File Fit Rings
Brand: Mahle
SKU: mahle-mahle-ms-3-552in-005in-1-0mm-1-0mm-2-0mm-file-fit-rings-t14-29749
Price: 183.28 USD
Availability: BackOrder

Mahle MS 3.552in +.005in 1.0mm 1.0mm 2.0mm File Fit Rings

$183.28

On Backorder

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

Mahle MS 3.552in +.005in 1.0mm 1.0mm 2.0mm File Fit Ring Set. Universal fitment for engine builds.

Key Features

Fits a 3.552 inch bore with a +0.005 inch oversize.
Features 1.0mm top ring, 1.0mm second ring, and 2.0mm oil control ring.
File-fit design allows for custom gapping to match cylinder bore.
Standard tension rings for a reliable seal.
Universal fitment for various engine builds.
Mahle is a popular brand for engine components.

⚠️ 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

This is a Mahle piston ring set, specifically the 3557MS-112 model. These are file-fit rings, meaning they require you to gap them to your specific cylinder bore during installation. The set features a 1.0mm top ring, a 1.0mm second ring, and a 2.0mm oil control ring, all designed for a 3.552-inch bore with a +0.005-inch oversize. Mahle is a well-known name in engine components, and these rings are built for performance and durability in engine rebuilds.

File-fit rings offer a degree of customization that can be beneficial for builders looking to achieve precise tolerances in their engine builds. The standard tension rings are designed to provide a solid seal against the cylinder wall, helping to maintain compression and prevent blow-by. This set is intended for universal applications where precise gapping is part of the engine assembly process.

Please note that these rings are not CARB approved and cannot be shipped to California. Always refer to your specific engine's service manual for correct ring gapping procedures and installation instructions.