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Cummins 4BT/6BT Belt Tensioners

Belt Tensioner for Cummins 4NT/6BT Engines

We stock belt tensioners for Cummins 3.9 and 5.9 liter engines. For your convenience, you can access our inventory through the product links listed below.

If you do not see the part you are looking for, please use our quote request form or call us at 888.687.0539: our knowledgeable sales staff will gladly help you.

3974102

BELT TENSIONER - 4B3.9 / B4.5 / 6B5.9 / B6.7 / ISB / QSB

Genuine Cummins Part

$270.26

3976834

BELT TENSIONER - 4B3.9 / B4.5 / 6B5.9 / B6.7 / ISB / QSB

Genuine Cummins Part

$230.83

4981116

BELT TENSIONER - 4B3.9 / B4.5 / 6B5.9 / B6.7 / ISB / QSB

Genuine Cummins Part

$271.86

5259022

BELT TENSIONER - 4B3.9 / B4.5 / 6B5.9 / B6.7 / ISB / QSB

Genuine Cummins Part

$229.74

5270678

BELT TENSIONER - 4B3.9 / B4.5 / 6B5.9 / B6.7 / ISB / QSB

Genuine Cummins Part

$242.08

5333477
Hassle-Free Return Item

BELT TENSIONER - B / ISB / QSB

Genuine Cummins Part

$230.83

5333478

BELT TENSIONER - 4B3.9 / B4.5 / 6B5.9 / B6.7 / ISB / QSB

Genuine Cummins Part

$231.96

5333480

BELT TENSIONER - 4B3.9 / B4.5 / 6B5.9 / B6.7 / ISB / QSB

Genuine Cummins Part

$302.36

DS-3937553
Hassle-Free Return Item

BELT TENSIONER - B SERIES / ISB / QSB

$83.95

DS-3937556
Restocking Fee Applies

BELT TENSIONER - 4BT3.9 / 6BT5.9 / ISB / ISB3.9 / ISB4.5 / QSB3.9

$88.05

DS-3947574

BELT TENSIONER - B SERIES / ISB / QSB

$202.49

DS-3978021

BELT TENSIONER - B SERIES

$93.36

DS-5333480

BELT TENSIONER - 4B3.9 / B4.5 / 6B5.9 / B6.7 / ISB / QSB

$214.34

888.687.0539 (U.S.)|225.706.4858 (Int.)

Monday-Friday 7am-5pm CST
8784 S. Choctaw Dr. Baton Rouge, LA 70815
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