Mahle Motorsport File Fit Piston Ring Set 3.937 in. Bore 1.0/1.0/2.0mm
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Regular price
$183.28
Verified Fitment & Application Support
This product is selected for proper fitment and compatibility with the listed engine application. Our team is available to assist with fitment questions, installation considerations, and supporting components to ensure a smooth install and reliable performance.
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Compliance & Restrictions
California Proposition 65 (Prop 65)
WARNING: This product can expose you to chemicals which is known to the State of California to cause cancer and/or reproductive harm.
For more information, visit www.P65Warnings.ca.gov.
CARB / California Emissions Compliance
This item may be restricted in California and other regions with emissions regulations. If applicable, it is intended for
competition/off-road use only unless otherwise stated. It is the customer’s responsibility to confirm local compliance before purchase.
Orders shipping to restricted areas may be canceled.
File fit 1.0/1.0/2.0mm rings for a 3.937 in. bore. Because they arrive 0.005 in. oversize, the builder controls the end gap instead of accepting a fixed one.
Key Features
- Steel top ring finished with Mahle's patented HV385 supersonic thermal spray process for bonding, durability and scuff resistance, a steel Napier second ring, and a CP-20 oil ring
- Ring pack: 1.0mm, 1.0mm, 2.0mm (top, second, oil)
- Standard tension oil control ring
- File fit: supplied at 3.942 in. for a 3.937 in. finished bore
- Mahle develops its performance rings with ring simulation and computer modelling to cut friction, and finishes the ring flanks flat to seal against the piston
Product Details
- Manufacturer Part Number: 3942MS-112
- Brand: Mahle Motorsport
- Finished bore: 3.937 in
- Ring thickness: 1.0mm, 1.0mm, 2.0mm
- Fit type: File fit (+0.005 in.)
- Tension: Standard
- Quantity: Complete set for an eight-cylinder engine
Shipping Height: 4.0
Shipping Length: 6.0
Shipping Width: 5.0