Yamaha DT400 Parts for repair and restoration
Yamaha's 1975 trail lineup included the DT400B. The DT400 collection spans several model years, and service-part applications differ across the fuel, clutch and drum-brake assemblies.
Fuel-tap replacement
The Yamaha fuel petcock assembly fits DT400 1975–1976 and replaces OEM 498-24500-00.
Sold individually; match the tank mounting, outlet direction and hose connection to the fitted tap.
Clutch-plate service
The Yamaha clutch plate fits DT400 1977–1979 and replaces OEM 383-16321-00.
Sold individually; compare plate type, tang pattern and thickness with the clutch stack.
Drum-brake shoes
The Yamaha brake shoe fits DT400 1975–1978 and replaces OEM 4GR-W2536-00.
Sold individually; check shoe width, pivot shape and drum position against the fitted assembly.
Choosing parts for your Yamaha DT400
Record the model code: Yamaha's 1975 trail material identifies the DT400B. If your machine retains its original label or manual, use that model code with the model year when checking a replacement.
Do not carry one range to another part: the fuel tap is for DT400 1975–1976, the brake shoes for 1975–1978, and the clutch plate for 1977–1979. These ranges differ by component.
Match the assembly: compare the fuel tap's tank fitting and OEM 498-24500-00, clutch plate reference 383-16321-00, or shoe reference 4GR-W2536-00 with the original part. Check the drum and installed brake position before fitting shoes.
Building a custom Yamaha DT400?
For a café racer, tracker or other custom build, browse universal handlebars and grips and mirrors and adaptors. Check clamp diameter, mirror threads, cable reach and steering clearance; universal accessories may need modification on your motorcycle.
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Need help choosing a part? Send us your model year and the part number you are considering, plus a photo of the original part if available.
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Yamaha DT400 Parts questions
Which years does the DT400 fuel petcock fit?
The fuel petcock assembly specifies Yamaha DT400 1975–1976 and replaces OEM 498-24500-00. Check the tank connection and outlet direction.
Will the DT400 clutch plate fit a 1975 model?
The clutch-plate application is DT400 1977–1979. For 1975–1976, match the original plate reference before choosing another part.
Which DT400 years does the rear brake shoe fit?
The brake shoe fits DT400 1975–1978 and is sold individually. Check the fitted drum assembly and OEM reference 4GR-W2536-00 before ordering.
What is the DT400B?
Yamaha's 1975 trail material identifies the DT400B. Use your model year and any retained model code to distinguish the correct fuel, clutch and brake applications.