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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 Every Detroit Series 50 here can be cross-referenced against OEM, competitor, and superseded part numbers.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
DOWEL PIN
Detroit DIESEL 50 DETROIT
645020 Detroit Dowel Pin
08920172 · 8920172
JAK'S JAKS-645020
Available · Confirm Lead Time
$64.95
WASHER
Detroit DIESEL 50 DETROIT
642050 Detroit Washer
23505897
JAK'S JAKS-642050
Available · Confirm Lead Time
$20.20
THERMOSTAT
Detroit DIESEL 60 DETROIT
641340 Detroit Thermostat
23518362 · 23524520
JAK'S JAKS-641340
Available · Confirm Lead Time
$29.43
OIL COOLER
Detroit DIESEL 60 DETROIT
641271 Detroit Oil Cooler
23522415 · 52474367
JAK'S JAKS-641271
Available · Confirm Lead Time
$279.99
OIL COOLER
Detroit DIESEL 50 DETROIT
641270 Detroit Oil Cooler
23522416 · 52458196
JAK'S JAKS-641270
Available · Confirm Lead Time
$214.99
641269 Detroit Oil
Detroit DIESEL 50 DETROIT
641269 Detroit Oil Cooler
23529183 · 52454595
JAK'S JAKS-641269
Available · Confirm Lead Time
$198.99
NUT
Detroit DIESEL 50 DETROIT
640027 Detroit Nut
8929019
JAK'S JAKS-640027
Available · Confirm Lead Time
$19.62
BOLT
Detroit DIESEL 50 DETROIT
640025 Detroit Bolt
8929355
JAK'S JAKS-640025
Available · Confirm Lead Time
$19.12
SCREW
Detroit DIESEL 50 DETROIT
640020 Detroit Screw
23508863
JAK'S JAKS-640020
Available · Confirm Lead Time
$26.96
SCREW
Detroit DIESEL 50 DETROIT
640014 Detroit Screw
08929393 · 8929393
JAK'S JAKS-640014
Available · Confirm Lead Time
$16.92
SPACER
Detroit DIESEL 50 DETROIT
640013 Detroit Spacer
23517243 · DDE23517243
JAK'S JAKS-640013
Available · Confirm Lead Time
$54.95
SCREW
Detroit DIESEL 50 DETROIT
640001 Detroit Screw
23506222 · 4333-1833767C1
JAK'S JAKS-640001
Available · Confirm Lead Time
$17.94

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