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-3289257 V-Belt For 4B3.9, 6B5.9, And 6CTA 8.3L Cummins Engines

(8 Ribs, 69.39")

OEM #: 3289257SKU: DS3289257
$50.30

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Return with 20% Fee

This is a V-belt for Cummins 4B3.9, 6B5.9, 6CTA 8.3L, ISB4.5, ISB6.7L, and ISC8.3 engines.

SKU DS3289257
OEM Number 3289257
Part Type Belts
OEM Brand CUMMINS

Aftermarket 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.