Engines and Components› Pistons and Piston Rings

JE Pistons

JE Pistons Ring Sets 1.2 / 1.2 / 2.5 Subaru EJ257 Block w/EJ20 Head

$207.93

SKU: J001 JG4904-3937

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In Stock
Ships by Jun 7
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Non-Returnable Item
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Description

The JE Pistons JG4904-3937 is a piston ring set designed for internal combustion engines. It features a 3.937-inch bore diameter, which is equivalent to 100.00mm. This ring set includes three rings and is specified as 'File Fit,' meaning it may require adjustment during installation.

The top and second rings have a thickness of 0.0472 inches, while the oil ring is 0.098 inches thick.

Fitment

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Specifications

BrandJE Pistons
Part NumberJ001 JG4904-3937

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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