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Our office is closed on Friday March 29th.

Our office is closed on Friday March 29th.

Cummins 4BT/6BT Crankshaft Bearings and Seals

Cummins 4BT/6BT Crankshaft Bearings and Seals

We carry new and remanufactured crankshaft main bearings, front and rear seals 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 B Series part you need, please use our quote request form or call us at 855.470.3525: our friendly sales staff will gladly help you.


OIL SEAL INSTALLER - B SERIES

Genuine Cummins Part

$218.32

OIL RING SEAL - ISB / B SERIES

Genuine Cummins Part

$36.43

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 - 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 - 6B (.25 MM OVERSIZED)

$83.11

MAIN BEARING SET - 6B (.50 MM OVERSIZE)

$96.32

FRONT CRANKSHAFT SLEEVE - B SERIES

$32.71

REAR CRANKSHAFT SLEEVE - B SERIES / C SERIES

$62.77

SEAL - B SERIES / C SERIES

$38.96

REAR CRANKSHAFT OIL SEAL KIT - B SERIES / C SERIES

$61.28

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 - 6B (STANDARD)

Surplus Item - Special Pricing

$36.01

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

OIL SEAL

$15.29