Personal menu

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.

My account

My account Close

Register Log in

Fresh Water Pumps for Cummins 378, 504, 555, and 903 Engines

Fresh Water Pump for Cummins 378, 504, 555, and 903 Engines

We carry fresh water pumps for V6-378, V8-504, V8-555, and V8-903 engines. You can easily access our parts selection by using the product links listed below.

If you do not see the Cummins part you need, please use our quote request form or call us at 888.687.0539: our knowledgeable inside sales staff will gladly help you.

3002483

WATER PUMP IMPELLER - V378 / V504 / V555 / V903 / VTA903

Genuine Cummins Part

$936.69

Qty:

Special Order

DS-201737

THERMOSTAT - V378 / V504 / V555 / V903 / VT8 / VTA903

$32.92

Qty:

In Stock

DS-AR61392

WATER PUMP REPAIR KIT - 504 / 555 / 903

$121.04

Qty:

In Stock

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

Fresh Water Pumps for Cummins 378, 504, 555, and 903 Engines

3002483

DS-201737

DS-AR61392

Payment options