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Our office is closed on Friday March 29th.

Our office is closed on Friday March 29th.

Cummins 8.3, ISC, 6CTA, and QSC Belts

Belt  for Cummins 6CTA, ISC, and QSC Engines

Keep your C-Series engines on track with Cummins belts from Diesel Parts Direct. Each belt is engineered with the latest technology and meets OEM specifications to operate smoothly even in the most demanding environments. Whether you need an 8.3 Cummins serpentine belt, or a Cummins fan belt to suit ISC and QSC diesels, we stock OEM and aftermarket alternatives.

Ensuring the correct fitment of Cummins engine fan belts can be a challenge, which is why our customer support team are on stand-by to help you with any questions. Can’t find the part you’re looking for? Call us or fill out the quote request form and we’ll find it for you.

When you need Cummins belts to get your C-Series engines up and running, visit Diesel Parts Direct.


V-BELT - N14 / ISC / QSC / NH220 / NH250 / NTA855

Genuine Cummins Part

$53.76

V-BELT - 4B3.9 / 6B5.9 / ISB3.9 / ISB4.5 / ISB6.7

Genuine Cummins Part

$121.66

V-BELT - 4BT / 6BT / ISB / 6CTA 8.3L (69 IN.)

Surplus Item - Special Pricing Genuine Cummins Part

$58.74

V-RIBBED BELT - 6C8.3 / ISC8.3 / QSC8.3

Genuine Cummins Part

$150.47

V-BELT - 4BT / 6BT / ISB 6.7L / 6CTA 8.3L

Genuine Cummins Part

$96.39

V-BELT- B SERIES / ISB / C SERIES

$47.51

BELT- B SERIES / ISB / C SERIES

$56.94

ENGINE BELT- B SERIES / ISB / C SERIES

$37.77

ENGINE BELT- B SERIES / ISB / C SERIES

$31.98

ENGINE BELT- B SERIES / ISB / C SERIES

$32.09

ENGINE BELT - 6C8.3 / ISC / ISC8.3 / ISL / ISL8.9

$21.81

ENGINE BELT - 6C8.3 / ISC / ISC8.3 / ISL

$80.69

V-BELT - B SERIES / C SERIES / ISB / QSB (RIBBED)

$72.92

RIBBED BELT - 6C8.3 / ISC / ISC8.3 / ISL

$58.19

V-BELT - B SERIES / C SERIES / ISB / QSB (RIBBED)

$61.35

V-BELT - B SERIES / C SERIES / ISB / QSB (RIBBED)

Surplus Item - Special Pricing

$38.56

V-RIBBED BELT - B SERIES / C SERIES / ISB / QSB (57.5")

$61.18

RIBBED V-BELT - B SERIES / C SERIES / ISB / QSB

$63.58

V-RIBBED BELT - 6CTA / ISC / ISM / QSM

$62.36

BELT - 6C8.3 / ISC / ISC8.3 / ISL

$63.89

BELT 63.5 INCH 4BT, 6BT, 6CT

$38.58

ENGINE BELT - 6C8.3 / ISC / ISC8.3 / ISL

$33.26

WATER PUMP / ALTERNATOR BELT - 6C8.3 / G8.3 / ISC / ISL

$41.47

BELT, 69 INCH - ISB / 4BT / 6BT / 6CTA

$70.22

V-BELT - 4B3.9 / 6B5.9 / 6CTA 8.3L (8 RIBS, 69.39")

$81.12

RIBBED BELT - 6C8.3 / ISC / ISC8.3 / ISL

$60.61

ENGINE BELT - 6C8.3 / ISC / ISC8.3 / ISL

$61.43

ENGINE BELT - 6C8.3 / ISC / ISC8.3 / ISL

$54.96

ENGINE BELT - 6C8.3 / ISC / ISC8.3 / ISL

$54.96

ENGINE BELT - 6C8.3 / ISC / ISC8.3 / ISL

$60.56

ENGINE BELT - 6C8.3 / ISC / ISC8.3 / ISL

$47.92

ENGINE BELT - 6C8.3 / ISC / ISC8.3 / ISL

$57.27

ENGINE BELT - 6C8.3 / ISC / ISC8.3 / ISL

$53.43

SERPENTINE BELT - C SERIES (61-1/8IN X 1.12IN, 8 RIBS)

$71.91

ENGINE BELT - 6C8.3 / ISC / ISC8.3 / ISL

$39.41

BELT TENSIONER - B SERIES / C SERIES / ISB / QSB

$113.59

ENGINE BELT - 6C8.3 / ISC / ISC8.3 / ISL

$38.09

RIBBED V-BELT - 6C8.3 / ISC / ISC8.3 / ISL

$63.58

ENGINE BELT - 6C8.3 / ISC / ISC8.3 / ISL

$73.48

ENGINE BELT - 6C8.3 / ISC / ISC8.3 / ISL

$68.84

RIBBED V-BELT - 6C8.3 / ISC / ISC8.3 / ISL

$63.73

ENGINE BELT - 6C8.3 / ISC / ISC8.3 / ISL

$69.99

ENGINE BELT - 6C8.3 / ISC / ISC8.3 / ISL

$74.26

ENGINE BELT - 6C8.3 / ISC / ISC8.3 / ISL

$33.26