What year Yamaha does this engine number represent and is it a 250?. The number on the engine is 450-020484 and specs

SOURCE: I need 1974 Yamaha DT 250 enduro Parts Diagram and

GDay mate

Took a bit of scrounging bout the net, but I eventually found it!!

You can look at the parts diagram/part numbers for the old girl here

A rating and feedback is a great way to reward me for my efforts to find this for you. Cheers mate!!

regards
robotoek

SOURCE: Hello- I need a headlight for 1974 yamaha dt 360.

JP cycles has them for $18 .Make sure you get the 5 3/4 inch seal beam. OEM yamaha are very hard to find and very expensive. google JP Cycles