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Our office will be closed 9/7/2026 in observance of Labor Day. Orders placed during this time will be processed when our office opens 9/8/2026.

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Cummins ISB and QSB Raw Water Pumps

We sell raw water pumps 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 888.687.0539: our knowledgeable sales staff will gladly help you.

3908220

RAW WATER PUMP REPAIR KIT - 4BT / 6BT

Genuine Cummins Part

$417.56

Qty:

Special Order

3974456

SEA WATER PUMP REPAIR KIT - ISB / QSB (MINOR)

Genuine Cummins Part

$335.43

Qty:

Ships in 3-4 days

DS-3908220

RAW WATER PUMP REPAIR KIT - 4BT / 6BT

$48.89

Qty:

Ships in 1-2 days

DS-5265998

SEA WATER PUMP - QSB 5.9L / QSB 6.9L

Call for price

DS-5268375

RAW WATER PUMP - B SERIES / ISB / QSB

$1,104.88

Qty:

Ships in 1-2 days

Caterpillar® and all of the Caterpillar® engine models listed on this website are registered trademarks of Caterpillar, Inc. Cummins® and all of the Cummins® engine models listed on this website are registered trademarks of Cummins. Detroit Diesel® and all of the Detroit Diesel® engine models listed on this website are registered trademarks of Daimler AG. John Deere® and all of the John Deere® engine models listed on this website are registered trademarks of John Deere. Allison Transmission® and all of their transmission models listed on this website are registered trademarks of Allison Transmission®. Diesel Parts Direct is not an authorized dealer for Caterpillar, Cummins, Detroit Diesel, John Deere, or Allison Transmission. None of the parts beginning with "DS" or "R" are genuine Caterpillar, Cummins, Detroit Diesel, John Deere, or Allison Transmission items.

CID: 2

Cummins ISB and QSB Raw Water Pumps

3908220

3974456

DS-3908220

DS-5265998

DS-5268375

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