Mahle Rings Performance Napier THM-13 3.917in x 1.2MM .135in RW Plain Ring Set

Name: Mahle Rings Performance Napier THM-13 3.917in x 1.2MM .135in RW Plain Ring Set
Brand: Mahle
SKU: M002 3021299B
Price: 243.84 USD
Availability: InStock

$715.16 $243.84 Save $471.32

SKU: M002 3021299B

In Stock

Ships by Jun 13

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Non-Returnable Item

Description

The Mahle 3021299B is a 48-piece bulk pack of Napier THM-13 piston rings, measuring 3.917 inches in diameter with a 1.2MM thickness and a .135 inch radial width. These performance rings are designed for precise engine builds.

Fitment

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Specifications

Brand	Mahle
Part Number	M002 3021299B

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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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