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

File fit rings need to be gapped by the installer to match the specific cylinder bore clearance of your engine. This allows for precise tuning of the ring end gap, which is important for performance and proper sealing.

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 designed for a 3.800 inch bore with a +.005 inch clearance.

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 MS 3.800in +.005in 1.0mm 1.0mm 2.0mm 3

Name: Mahle MS 3.800in +.005in 1.0mm 1.0mm 2.0mm File Fit Rings
Brand: Mahle
SKU: mahle-mahle-ms-3-800in-005in-1-0mm-1-0mm-2-0mm-file-fit-rings-t14-29758
Price: 183.28 USD
Availability: BackOrder

Mahle MS 3.800in +.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 3.800in +.005in 1.0mm 1.0mm 2.0mm file fit piston ring set.

Key Features

This is a Mahle MS piston ring set for a 3.800 inch bore with a +.005 inch clearance.
Features a 1.0mm top ring, 1.0mm second ring, and 2.0mm oil ring.
These are file-fit rings, requiring gapping to your specific engine application.
Designed for proper sealing and oil control in custom or performance engine builds.
Part number 3805MS-112.

⚠️ 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 MS piston ring set, designed for a 3.800 inch bore with a +.005 inch clearance. The ring set features a 1.0mm top ring, a 1.0mm second ring, and a 2.0mm oil ring. These are file-fit rings, meaning you'll need to gap them to your specific application during installation, which is common for performance or custom engine builds. Mahle is a well-known name in engine components, and this set is built for durability and proper sealing in your engine.

The file-fit design allows for precise gapping, which is crucial for optimal compression and oil control, especially in engines that have been bored or honed to specific tolerances. This ensures a good seal against the cylinder wall, helping to prevent blow-by and maintain engine performance. The different ring thicknesses (1.0mm, 1.0mm, 2.0mm) are standard for many engine configurations and are designed to work together to manage combustion pressure and oil consumption.

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