Parts and repairs for the DT250
The verified PartsNMore applications on this page cover 1977–1982 engine set; other parts have shorter ranges. The three relevant parts have different year spans. Select by the exact DT250 year and component rather than assuming the full model range applies to each item. Product fitment is part-specific: check the exact model suffix, year and component before choosing a replacement.
Engine gasket set
The engine gasket set gasket set covers DT250 1977–1982. Confirm engine variant and inspect mating surfaces during teardown.
Fuel petcock
The fuel petcock assembly includes DT250 for 1974–1976, an earlier range than the engine gasket set. Match the tap and mounting arrangement.
Fork seals
The fork seals fork-seal pair includes DT250 1974–1978. Check the fork dimensions and do not extend its range to later DT250 years.
Choosing parts for the DT250
Confirm the model code: identify the full designation and year on the motorcycle before using a product application.
Match the repair: distinguish the component position and type; fork dust seals, fork oil seals, friction pads, shoes and steel clutch plates are not interchangeable categories.
Use each part’s own application: the examples above include different year ranges. A fitment for one component does not establish fitment for another.
Check the original: compare the mounting point, shape and reference number where available, particularly if the motorcycle has been modified.
Reference: Yamaha 1977 DT250/DT400 service manual reproduction, model and service reference.
Building a custom DT250?
For universal handlebars, grips, mirrors or adaptors, measure the mounts and check cable reach and clearance through the full steering sweep. Universal accessories are not confirmed direct-fit replacements.
PartsNMore support for your repair
When asking for fitment help, include the model year, full model designation and a clear photo or reference number for the part.
Yamaha DT250 Parts questions
Which DT250 years fit the engine gasket set?
The application covers DT250 1977–1982.
Does the fuel petcock fit a 1980 DT250?
No. Its current application includes DT250 1974–1976. Check the tap and year.
Which years do these fork seals cover?
The application includes DT250 1974–1978. Verify dimensions and your installed fork.
Can the 1977–1982 gasket-set range be used for other parts?
No. Each product has its own fitment years; the petcock and fork seals have shorter, earlier ranges.