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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.

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.

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

$55.96

PISTON COOLING NOZZLE - SMALL V SERIES

Genuine Cummins Part

$58.09

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

Genuine Cummins Part

$195.15

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

Genuine Cummins Part

$2,807.70

RELAY - V378 / V504 / V555 / V903 / VTA903

Genuine Cummins Part

$488.94

CLAMPING PLATE - V504 / V555 / V903

Genuine Cummins Part

$187.16

OIL COOLER CORE - NH / NT 855

$484.81

VALVE COVER GASKET - SMALL V SERIES

$14.07

VALVE COVER GASKET - SMALL V SERIES

$16.12

CONNECTION GASKET - KTA19 / QSK19 / N14 SERIES / SMALL V SERIES

$1.29

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

$29.95

VALVE COVER GASKET - SMALL V SERIES

$21.87

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

$63.40

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

$32.68

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

$25.08

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

$46.79

SEAL KIT - SMALL V SERIES / KTA38 / QSK38 / 100A-130A

$39.93

PLUNGER AND BARREL - SMALL V SERIES (PTD VA)

$55.18