What does '+.005in File Fit' mean for these piston rings?

This means the rings are slightly oversized and designed to be filed down by the installer to achieve a precise, custom ring gap. This is a common technique for performance or custom engine builds to ensure optimal sealing.

What are the specific dimensions of the rings in this set?

This set includes a 1.0mm top ring, a 1.0mm second ring, and a 2.0mm oil control ring. The overall diameter is 4.120 inches, with the file-fit allowance.

Are these piston rings suitable for all engine types?

These are universal fit rings intended for engine rebuilding. While they offer flexibility through the file-fit design, you must ensure the dimensions and intended application align with your specific engine's requirements.

Mahle Piston Rings 4125MS-112 - Universal

Name: Mahle MS 4.120in+.005in 1.0mm 1.0mm 2.0mm File Fit Rings
Brand: Mahle
SKU: mahle-mahle-ms-4-120in-005in-1-0mm-1-0mm-2-0mm-file-fit-rings-t14-132133
Price: 202.98 USD
Availability: BackOrder

Mahle MS 4.120in+.005in 1.0mm 1.0mm 2.0mm File Fit Rings

$202.98

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 4.120in+.005in 1.0mm 1.0mm 2.0mm File Fit Piston Rings. Universal fit for engine builds.

Key Features

Fits universal applications for engine rebuilding.
Includes 1.0mm top ring, 1.0mm second ring, and 2.0mm oil ring.
File-fit design allows for custom ring gap adjustment.
Designed for precise engine sealing and oil control.
From Mahle, a popular manufacturer of engine components.

These are universal fit piston rings intended for engine rebuilding. Please verify compatibility with your specific engine build requirements.

⚠️ 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 file-fit piston rings are designed for engine rebuilding projects where precise ring gap adjustment is needed. The set includes rings with specific dimensions: 1.0mm for the top ring, another 1.0mm for the second ring, and a 2.0mm oil ring. The '+.005in' designation means these rings are intended to be filed to achieve a specific gap, a common practice for performance or custom engine builds where standard-sized rings might not provide the optimal clearance.

Mahle is a well-known name in engine components, and this set reflects their focus on providing parts for engine overhauls. The file-fit design gives you the flexibility to dial in the exact ring gap required for your specific engine combination, whether you're working with a stock rebuild or a modified setup. This level of control is important for ensuring proper sealing, oil control, and overall engine performance.

Keep in mind that these rings are not CARB approved and cannot be shipped to California. If you're undertaking an engine rebuild that requires custom ring gap setting, this Mahle set offers a solid option from a reputable manufacturer.