Drive belt illustration – not the actual part
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Drive belt illustration – not the actual partDiesel Parts Direct logo

Aftermarket parts may appear slightly different, including the packaging.

Cummins4BT / 6BTBelts and Tensioners

DS-178474 V-Belt For V378, V504, V555, And V903 Cummins Diesel Engines

OEM #: 178474SKU: DS178474

Ships in 1-2 days

$56.14

Taxes and Shipping are calculated at checkout

Special Order Item - not eligible for return

This is a V-Belt for V378, V504, V555 and V903 Cummins Engines.

  • Fiber-loaded rubber stock adds flexibility along the length of the belt and provides greater lateral stability in the pulley.
  • Form-ground to ensure precise top width and sidewall dimensional control for proper fit to the pulley.
  • Thermally active tensile cords for maintenance-free performance when properly installed and tensioned.
  • XL Belts resist oil, heat, ozone, weather, and aging for improved belt life.

This high quality replacement part is guaranteed to meet SAE J636C specifications.

SKU DS178474
OEM Number 178474
Part Type Belts
OEM Brand CUMMINS

Aftermarket warranty

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  • Orders are processed the same or next business day
  • Expedited shipping options available at Checkout
  • If same-day shipping is critical, please call to confirm availability

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Call any of our friendly Parts Dept. Specialists with your engine serial number, and we can quickly verify whether this part is the correct part for your engine — no guesswork.

Phone: 888.687.0539

Don't know how to find your engine serial number? Go to our Engine Help Center for assistance.