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

File-fit rings are designed to be custom-gapped by the installer to precisely match the cylinder bore of your engine. This allows for a more accurate seal compared to pre-gapped rings, especially in performance or rebuilt engines.

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. The set is also sized for a 3.927 inch bore with a .005 inch oversize.

Can these rings be shipped to California?

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

Mahle Piston Ring Set 3.927in+.005in 1.0/1.0/2.0mm 3932MS-11

Name: Mahle MS 3.927in+.005in 1.0mm 1.0mm 2.0mm 4cyl File Fit Rings
Brand: Mahle
SKU: mahle-mahle-ms-3-927in-005in-1-0mm-1-0mm-2-0mm-4cyl-file-fit-rings-t14-523599
Price: 112.09 USD
Availability: BackOrder

Mahle MS 3.927in+.005in 1.0mm 1.0mm 2.0mm 4cyl File Fit Rings

$112.09

On Backorder

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

Mahle 4-cylinder file fit piston ring set with 3.927in+.005in sizing and 1.0mm, 1.0mm, 2.0mm ring dimensions.

Key Features

Fits 4-cylinder engines with a 3.927 inch bore size and a .005 inch oversize.
Includes a 1.0mm top ring, a 1.0mm second ring, and a 2.0mm oil ring.
Features standard tension for reliable sealing.
File-fit design allows for custom gapping to match your cylinder bore.
From Mahle, a popular manufacturer of 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

Starting with a 3.927 inch bore size and a .005 inch oversize, this Mahle piston ring set is built for 4-cylinder engines. The rings feature a 1.0mm top ring, a 1.0mm second ring, and a 2.0mm oil ring, all with standard tension. These are file-fit rings, meaning you'll need to gap them to your specific cylinder bore during installation, which allows for precise control over your engine's seal.

Mahle is a well-known name in engine components, and this set is designed to help restore proper compression and oil control in your engine. The file-fit design is common in performance and rebuild applications where a custom fit is crucial for optimal sealing and durability. Proper gapping ensures the rings expand correctly within the cylinder, preventing blow-by and oil consumption.

This ring set is intended for universal application in 4-cylinder engines. Please note that this part is not CARB approved and cannot be shipped to California. Always refer to your vehicle's specific service manual for detailed installation instructions and recommended ring gapping procedures.