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Our offices are closed for Thanksgiving. Orders placed online will be processed on Monday 12/1/2025.

Our offices are closed for Thanksgiving. Orders placed online will be processed on Monday 12/1/2025.

Parts for Cummins 378, 504, 555, and 903 Engines

Cummins 378, 504, 555, and 903 Parts

We carry a wide selection of parts including aftercoolers and vibration dampers for Cummins V6-378, V8-504, V8-555, and V8-903 diesel engines.

If you need any help finding a part, please use our quote request form or call us at 888.687.0539: our knowledgeable inside sales staff will promptly assist you.


BUSHING - SMALL V SERIES / VTA / KTA38 / QSK38 / N14

Genuine Cummins Part

$54.95

OFFSET WOODRUFF KEY - V504 / V555 / V903 / KTA19 / QSK19 / KTA50 / QSK50

Genuine Cummins Part

$124.74

PISTON COOLING NOZZLE - SMALL V SERIES

Genuine Cummins Part

$54.79

WATER PUMP SEAL - V504 / V555 / V903 / NH / NT 855 / L10 / M11

Genuine Cummins Part

$191.96

FUEL SOLENOID KIT - SMALL V SERIES

Genuine Cummins Part

$47.63

WIRING HARNESS - V378 / V504 / V555 / V903 / VTA903

Genuine Cummins Part

$2,756.63

AFTERCOOLER - SMALL V SERIES

Genuine Cummins Part

$3,682.48

AFTERCOOLER - SMALL V SERIES

Genuine Cummins Part

$3,958.37

RELAY - V378 / V504 / V555 / V903 / VTA903

Genuine Cummins Part

$480.08

AFTERCOOLER - SMALL V SERIES

Genuine Cummins Part

$20,231.76

CLAMPING PLATE - V504 / V555 / V903

Genuine Cummins Part

$183.75

FAN HUB ROLLER BEARING - NH220 / NH250 / NTA855 / V504/ V555

$30.05

FUEL SHUTOFF VALVE - 504 / 555 / 903 (24 VDC)

$63.61

SHUT-OFF SOLENOID - L10 / G50 / K50 / QSK50

$32.80

SOLENOID - V378 / V504 / V555 / V903 (24V)

$25.09

FUEL PUMP OIL SEAL - NH855 / NT855 / V378 / V504 / V555 / V903 / VT8

Surplus Item - Special Pricing

$27.53

PISTON KIT - SMALL V SERIES (WITH PIN AND RETAINERS)

Call for price

PLUNGER AND BARREL - SMALL V SERIES (PTD VA)

$55.36

PLUNGER AND BARREL - SMALL V SERIES (PTD VA)

Call for price