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Our office is closed on Friday March 29th.

Our office is closed on Friday March 29th.

Cummins ISB and QSB Crankshaft Bearings and Seals

Cummins ISB/QSB Bearings and Seals

We sell crankshaft main bearings, front and rear seals for Cummins ISB and QSB engines. You can easily access our inventory by visiting 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 855.470.3525: our knowledgeable sales staff will gladly help you.


OIL RING SEAL - ISB / B SERIES

Genuine Cummins Part

$36.43

CRANKSHAFT OIL SEAL - ISB / QSB

$49.20

OIL SEAL - 6CTA / ISB / QSB

Genuine Cummins Part

$51.28

OIL SEAL - B3.3 / QSB3.3 (FRONT)

On National Backorder. Order DS-C6204213510

$66.46

MAIN BEARING - B3.3 / QSB3.3 (.50 MM O/S)

Genuine Cummins Part

$83.54

MAIN BEARING SET - ISB (STANDARD)

$90.43

MAIN BEARING SET - B SERIES / ISB / QSB (STANDARD, FPD)

$99.90

MAIN BEARING SET - 4B (STANDARD)

$56.85

MAIN BEARING SET - 4B (.25 MM OVERSIZE)

Surplus Item - Special Pricing

$28.11

MAIN BEARING SET - 4B (.50 MM OVERSIZE)

$65.74

MAIN BEARING SET - ISB (.030" / .75 MM)

$39.41

MAIN BEARING SET - ISB (.040" / 1.00 MM)

$59.31

MAIN BEARING SET - B SERIES (.030" / .75 MM)

$48.71

MAIN BEARING SET - ISB (.040" / 1.00 MM)

$45.42

FRONT CRANKSHAFT SEAL & WEAR SLEEVE KIT - B SERIES

$24.08

REAR CRANKSHAFT OIL SEAL KIT - B SERIES / C SERIES

$61.28

FRONT CRANKSHAFT SEAL KIT (WITH INSTALLATION TOOL)

$23.33

FRONT OIL SEAL KIT - 6C8.3 / G8.3 / ISC / ISL

$39.10

REAR CRANKSHAFT SEAL SERVICE KIT - 6CTA / ISB / QSB

$34.09

FRONT CRANKSHAFT OIL SEAL - ISB / QSB

$34.33

MAIN BEARING SET (STANDARD)

$56.46

MAIN BEARING SET - ISB / QSB (.010 OVERSIZE)

$59.03

MAIN BEARING - B SERIES / ISB / QSB (FLANGED)

$16.24

MAIN BEARING - B SERIES / ISB / QSB (FLANGED)

$16.24

MAIN BEARING - B SERIES / ISB / QSB (FLANGED)

$15.68

MAIN BEARING) - B SERIES / ISB / QSB (1.00 MM, FDP)

$17.49

THRUST WASHER SET - QSB (STANDARD | FPD)

$21.25

OIL SEAL - B3.3 / QSB3.3 (REAR)

$25.63

CYLINDER HEAD GASKET - B3.3 / QSB3.3

$75.25

OIL SEAL - B3.3 / QSB3.3 (FRONT)

$16.24