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Engines and Components› Pistons and Piston Rings

Mahle

Piston Ring

$35.84 $32.15 Save $3.69

SKU: M002 4040MS-112-1

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Description

Part #: 4040MS-112-1

1.0mm, 1.0mm, 2.0mm Standard Tension +.005 File Fit Rings 4.035"+0.005 1.0, 1.0, 2.0mm File Fit SINGLE RING SET (1CYL).

This product may expose you to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.

MIA's Description

The Mahle 4040MS-112 is a set of performance series piston rings designed for a 4.035 in. bore engine. These rings are file-fit and feature 1.0mm top rings, 1.0mm second rings, and a 2.0mm oil ring. They are constructed from steel for the top and second rings, with the top ring facing treated with an HV385 thermal spray, and the second ring phosphate coated. The oil ring is a 3-piece stainless steel design with a chrome facing.

Fitment

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Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

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Specifications

BrandMahle
Part NumberM002 4040MS-112-1

Videos

Oil Ring FAQs

Oil Ring FAQs
How to Properly Install Rings on a Piston

How to Properly Install Rings on a Piston
Installing Rings on the Piston

Installing Rings on the Piston
Piston Ring Order

Piston Ring Order
Mahle Motorsports - Pistons

Mahle Motorsports - Pistons
Piston Installation

Piston Installation
Piston Circlip Installation - Techniques, Tools, and Tips

Piston Circlip Installation - Techniques, Tools, and Tips
How to File Fit Rings for Your Engine: Guide to Proper Gap

How to File Fit Rings for Your Engine: Guide to Proper Gap
Inside The Design Of Mahle Motorsport PowerPak Pistons

Inside The Design Of Mahle Motorsport PowerPak Pistons
Performance Diesel Cast Pistons vs OE Pistons

Performance Diesel Cast Pistons vs OE Pistons

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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