Mahle Motorsport File Fit Piston Ring Set 3.947 in. Bore 1.0/1.0/2.0mm
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This item may be on backorder. Please contact us to confirm supplier availability and estimated lead time before ordering.
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.
Got Questions? Feel free to email us or call us at (503) 235-1947
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.
Cut for a 3.947 in. finished bore, this 1.0/1.0/2.0mm Mahle Motorsport set is supplied oversize at 3.952 in. and filed to final gap on the bench.
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 3.952 in. for a 3.947 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: 3952MS-112
- Brand: Mahle Motorsport
- Finished bore: 3.947 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