Engines and Components› Belts and Pulleys

SEALED POWER

BELT, V RIBBED

$50.35

SKU: S03T FP-3911566

In Stock
In Stock
Ships by Jun 14
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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Beginner — under 30 min

Description

The Sealed Power FP-3911566 is a V-ribbed belt designed for specific Cummins engine applications. This belt features an 8-rib configuration and measures 63.0 inches in length with a 1.125W width. It serves as a replacement part for various Cummins engines, including those in the 4BT3.9, 6BT5.9, 6CT8.3, ISBE, ISDE, and EQB series.

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.

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Specifications

BrandSEALED POWER
Part NumberS03T FP-3911566

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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