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

File-fit rings need to be individually gapped to your specific cylinder bore during installation. This allows for a precise fit, which is important for proper sealing and engine performance.

What are the dimensions of these rings?

The set includes rings for a 4.600 inch bore. The top and second rings are 1.5mm wide, and the oil ring is 3.0mm wide. They are also +.005 inches over the standard bore size.

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 4605MS-15

Name: Mahle MS 4.600in+ .005in 1.5 1.5 3.0 mm File Fit Rings
Brand: Mahle
SKU: mahle-mahle-ms-4-600in-005in-1-5-1-5-3-0-mm-file-fit-rings-t14-29814
Price: 179.36 USD
Availability: BackOrder

Mahle MS 4.600in+ .005in 1.5 1.5 3.0 mm File Fit Rings

$179.36

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 piston ring set, 4.600in bore size, .005in file fit. Ring Set

Key Features

This is a Mahle piston ring set.
Designed for a 4.600 inch bore size.
Rings are file-fit, requiring gapping during installation.
Top and second rings measure 1.5mm.
Oil ring measures 3.0mm.
Rings are +.005 inches over standard bore size.

⚠️ 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

In this Mahle ring set, you get a complete set of piston rings designed for a 4.600 inch bore. These are file-fit rings, meaning you'll need to gap them to your specific application during installation. The ring groove sizes are 1.5mm for the top and second rings, and 3.0mm for the oil ring. They are designed for standard tension and are +.005 inches over the standard bore size, which is important for proper sealing and piston-to-wall clearance in an engine rebuild.

Mahle is a well-known name in engine components, and these rings are built to perform. File-fit rings give you the flexibility to achieve a precise fit in your cylinders, which is crucial for good compression and oil control, especially in performance or custom engine builds. Proper gapping ensures the rings can expand correctly with heat and maintain a seal against the cylinder wall under all operating conditions.

Remember that these rings are not CARB approved and cannot be shipped to California. Always refer to the manufacturer's installation instructions for proper gapping and seating procedures to get the best performance from your engine rebuild.