Engines and Components› Pistons and Piston Rings
JE Pistons
4.6L 4V MOD STR 8.5
SKU: J001 314640R
Advanced — 4+ hours
Description
This piston is made 100% in the USA, utilizing 2618 aluminum for high tensile strength. It is designed specifically for each engine and application to optimize performance and longevity. Key features include a proprietary Forged Side Relief (FSR) design to minimize friction and power loss, and optional skirt coatings to reduce wear and noise. An accumulator groove is also included to improve ring seal.
Fitment
Fitment Guaranteed
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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.
Available on iOS & Android
Specifications
| Brand | JE Pistons |
| Part Number | J001 314640R |
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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