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
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OIL RING SEAL - ISB / B SERIES
Genuine Cummins Part
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OIL SEAL - 6CTA / ISB / QSB
Genuine Cummins Part
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Ships in 3-4 days
FRONT OIL SEAL - B3.3 / QSB3.3
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Ships in 3-4 days
MAIN BEARING - B3.3 / QSB3.3 (.50 MM O/S)
Genuine Cummins Part
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MAIN BEARING SET - B SERIES / ISB / QSB (STANDARD, FPD)
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Ships in 1-2 days
MAIN BEARING SET - 4B (STANDARD)
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Ships in 1-2 days
MAIN BEARING SET - 4B (.25 MM OVERSIZE)
Surplus Item - Special Pricing
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MAIN BEARING SET - 4B (.50 MM OVERSIZE)
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Ships in 1-2 days
MAIN BEARING SET - 6B (.25 MM OVERSIZED)
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Ships in 1-2 days
MAIN BEARING SET - 6B (.50 MM OVERSIZE)
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Ships in 1-2 days
FRONT CRANKSHAFT SLEEVE - B SERIES
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Ships in 1-2 days
REAR CRANKSHAFT SLEEVE - B SERIES / C SERIES
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Ships in 1-2 days
SEAL - B SERIES / C SERIES
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REAR CRANKSHAFT OIL SEAL KIT - B SERIES / C SERIES
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Ships in 1-2 days
FRONT OIL SEAL KIT - 6C8.3 / G8.3 / ISC / ISL
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REAR CRANKSHAFT SEAL SERVICE KIT - 6CTA / ISB / QSB
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Ships in 1-2 days
FRONT CRANKSHAFT OIL SEAL - ISB / QSB
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MAIN BEARING SET - 4BT / 6BT (STANDARD)
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Ships in 1-2 days
MAIN BEARING SET - 6B (STANDARD)
Surplus Item - Special Pricing
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MAIN BEARING SET - ISB / QSB (.010 OVERSIZE)
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MAIN BEARING - B SERIES / ISB / QSB (FLANGED)
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MAIN BEARING - B SERIES / ISB / QSB (FLANGED)
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MAIN BEARING - B SERIES / ISB / QSB (FLANGED)
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MAIN BEARING) - B SERIES / ISB / QSB (1.00 MM, FDP)
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Ships in 1-2 days
