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-178489 V-Belt For Cummins NH And NT Series Diesel Engines

OEM #: 178489SKU: DS178489
$53.69

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Special Order Item - not eligible for return

This is a V-Belt for NH/NT 856, NT495, NT743 and NTA855 Cummins Engines.

  • Deep notch pattern also allows greater flexibility over small diameter pulleys and helps keep the belt cool.
  • Special notch design resists cracking while providing tensile member support during operation.
  • Special tensile cords give high stretch resistance.
  • Oil and heat-resistant construction throughout.

This high quality replacement part is guaranteed to meet SAE J636b and SAE J637 specifications.

SKU DS178489
OEM Number 178489
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.