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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.

Crankshaft Components for Cummins 378, 504, 555, and 903 Engines

We offer a large assortment of new and remanufactured crankshaft components, including crankshafts, bearings and seals, and vibration dampers for V6-378, V8-504, V8-555, and V8-903 Cummins diesel engines.

If you need any help finding the part you are looking for, please use our quote request form or call us at 888.687.0539: our friendly inside sales staff will gladly assist you.


OIL SEAL - G28 / V28 / V378 / V504 / V555 / VT8

Genuine Cummins Part

$125.82

CRANKSHAFT SEAL - V378 / V504 / V555 / V903

$19.87

MAIN BEARING SET - V903 (STANDARD)

$259.55

MAIN BEARING SET - V903 (.010 OVERSIZE)

$245.51

MAIN BEARING SET - V903 (.020 OVERSIZE)

$227.48

MAIN BEARING SET - V-555 / VT378C (STANDARD)

$81.44

MAIN BEARING SET - SMALL V SERIES (.010 OVERSIZE)

$80.43

MAIN BEARING SET - SMALL V SERIES (.020 OVERSIZE)

$76.02

MAIN BEARING SET - V378C (STANDARD)

$66.15