The Yamaha XT250 headlight bulb uses a 9003 size for both high beam and low beam functions. The replacement chart covers vehicle production spanning 2008 to 2020 with corresponding bulb size specifications.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Yamaha XT250 uses the 9003 bulb for both high beam and low beam headlight positions across the 2008-2020 model years.
The 9003 is a dual-filament halogen bulb, meaning a single bulb unit contains two separate filaments to serve both the high beam and low beam functions within one housing.
The 9003 operates at 12 volts, with the high beam filament rated at 60 watts and the low beam filament rated at 55 watts.
The 9003 uses a P43t base, which is a bayonet-style mount with a 43mm flange. This base type determines physical fitment into the headlight housing and is not interchangeable with other base configurations.
The 9003 is an ANSI-standardized designation used in the United States and Canada. It is functionally equivalent to the H4 bulb used under international standards, though the designations originate from different standardization bodies.
Because the 9003 and H4 share the same filament configuration, wattage ratings, voltage, and P43t base, they are generally considered interchangeable in practice, though the specifications for the XT250 reference the 9003 designation specifically.