Engines and Components› Engine Bearings

SEALED POWER

WASHER, COPPER INJECTOR

$15.59

SKU: S03T FP-3900808

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Ships by Aug 3
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Description

WASHER, COPPER INJECTOR

MIA's Description

The Sealed Power FP-3900808 is a fuel injector sealing washer designed for specific Cummins diesel engines. It creates a proper seal between the fuel injector and cylinder head, ensuring correct combustion chamber sealing and optimal injector performance. This part is essential when replacing fuel injectors, servicing the fuel system, or rebuilding an engine to maintain reliability.

Fitment

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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

BrandSEALED POWER
Part NumberS03T FP-3900808

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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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