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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 Every Detroit Series 50 here can be cross-referenced against OEM, competitor, and superseded part numbers.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 19 of 139 Detroit Series 50 Parts
O-RING
Detroit DIESEL 50 DETROIT
621222 Detroit O-Ring
23515470
JAK'S JAKS-621222
Available · Confirm Lead Time
$29.94
O-RING
Detroit DIESEL 50 DETROIT
621218 Detroit O-Ring
08929289 · 8929289
JAK'S JAKS-621218
Available · Confirm Lead Time
$49.90
O-RING
Detroit DIESEL 60 DETROIT
621217 Detroit O-Ring
05234699 · 5234699
JAK'S JAKS-621217
Available · Confirm Lead Time
$24.12
O-RING
Detroit DIESEL 50 DETROIT
621216 Detroit O-Ring
05234702 · 5234702
JAK'S JAKS-621216
Available · Confirm Lead Time
$14.88
RETAINER
Detroit DIESEL 50 DETROIT
611010 Detroit Retainer
23521781 · 21723152
JAK'S JAKS-611010
Available · Confirm Lead Time
$30.84
OIL FILTER
Detroit DIESEL 50 DETROIT
650510 Detroit Oil Filter
238-3767 · 2383767
JAK'S JAKS-650510
Available · Confirm Lead Time
$205.14
SCREW
Detroit DIESEL 50 DETROIT
040028 Detroit Screw
3901448 · 3944593
JAK'S JAKS-040028
Available · Confirm Lead Time
$15.18
1…456

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