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

File-fit rings have end gaps that are intentionally left slightly oversized. This allows you to carefully file them down to the exact specification required for your engine's bore and clearance, ensuring a precise seal.

What are the 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. They are designed for a 4.030 inch bore with a +.005 inch clearance.

Can these rings be shipped to California?

No, this ring set is not CARB approved and cannot be shipped to California due to emissions regulations.

Mahle Piston Ring Set 4.030in +.005in 1.0mm 1.0mm 2.0mm 4035

Name: Mahle MS 4.030in +.005in 1.0mm 1.0mm 2.0mm File Fit Rings
Brand: Mahle
SKU: mahle-mahle-ms-4-030in-005in-1-0mm-1-0mm-2-0mm-file-fit-rings-t14-29769
Price: 183.28 USD
Availability: BackOrder

Mahle MS 4.030in +.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 4.030in +.005in 1.0mm 1.0mm 2.0mm file fit piston ring set.

Key Features

This is a Mahle piston ring set.
Designed for a 4.030 inch bore size.
Features a +.005 inch piston ring end gap clearance.
Includes a 1.0mm top ring, 1.0mm second ring, and 2.0mm oil control ring.
The rings are 'file-fit', meaning the end gaps are adjustable for precise installation.
This ring set is universal fit.

⚠️ 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

If you're rebuilding the engine in your classic car or custom build, getting the right piston rings is crucial for proper sealing and performance. This Mahle file-fit ring set is designed for a 4.030 inch bore with a +.005 inch clearance, giving you the flexibility needed for precise installation.

Mahle is a well-known name in engine components, and this set features a common 1.0mm top ring, 1.0mm second ring, and a 2.0mm oil control ring. The 'file-fit' designation means the end gaps on the rings are left slightly oversized, allowing you to file them down to the exact specification required for your specific engine build. This level of adjustability is important for achieving optimal compression and oil control, especially in engines that have been bored or honed beyond standard dimensions.

Remember that this ring set is not CARB approved and cannot be shipped to California. Always refer to your engine's specific service manual for correct ring gap specifications and installation procedures.