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

Cummins 3972263 V-Ribbed Belt For 4BT3.9 Diesel Engines

Genuine Cummins Part

OEM #: 3972263SKU: 3972263
$166.50

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Special Order Item - not eligible for return

This is a genuine Cummins V-Ribbed Belt for 4BT 3.9 engines.

SKU 3972263
OEM Number 3972263
Part Type Belts
OEM Brand CUMMINS

Aftermarket warranty

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Genuine Cummins parts warranty

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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.