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

Cummins 3973181 V-Ribbed Belt For Isb, Isc, And QSC Diesel Engines

Genuine Cummins Part

OEM #: 3973181SKU: 3973181
$163.12

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Special Order Item - not eligible for return

The Cummins 3973181 v-ribbed belt can be used on the following engines:

  • ISB and QSB
  • ISC, QSC, 6CTA
SKU 3973181
OEM Number 3973181
Part Type Belts
OEM Brand CUMMINS

Warranty

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Genuine Cummins parts warranty

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  • Orders are processed the same or next business day
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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.