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Detroit Series 50 Parts

JAK'S Diesel stocks aftermarket parts for the Detroit Diesel Series 50 — the inline four-cylinder, four-stroke derived from the better-known Series 60, sharing much of its design. From cylinder heads and fuel injectors to turbochargers, gaskets, and complete rebuild kits, we carry the components that keep these engines running in transit buses, vocational trucks, and industrial applications.

Not sure a number fits your build? Every Detroit Series 50 here can be cross-referenced against OEM, competitor, and superseded part numbers. Give us the number off the part or the engine and we'll confirm the right replacement before you buy.

Showing 24 of 139 Detroit Series 50 Parts
681831 Detroit Thermostat
Detroit DIESEL 60 DETROIT
681831 Detroit Thermostat
23532436
JAK'S JAKS-681831
Available · Confirm Lead Time
$32.99
1234…6

Choosing the Right Detroit Series 50 Parts

Heavy-duty diesel components must be matched to the exact engine and application. Before ordering from this collection, verify the part number, engine model, engine serial number, and any casting or calibration number shown on the original component.

Fitment information to have ready

  • OEM, dealer, casting, or interchange part number
  • Engine manufacturer, model, and engine serial number (ESN)
  • Truck year and model when the component is chassis-specific
  • Core details for remanufactured or exchange components

Need a fitment check?

Use the OEM cross-reference tool or text a clear photo of the part tag to (720) 445-6249. A JAK'S Diesel specialist can confirm the match before the part ships.

Got a Number We Don't List?

Text a photo of the part tag — a specialist crosses it and quotes you fast.

Text a Part-Tag Photo(720) 445-6249