The Yamaha WR250R uses a 9003 bulb size for both high beam and low beam headlight applications. The replacement chart covers vehicle production years spanning 2008 to 2019.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Yamaha WR250R uses the 9003 bulb for both the high beam and low beam headlight positions across the 2008-2019 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 on a 12-volt electrical system and carries a wattage rating of 60W on the high beam filament and 55W on the low beam filament.
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 designation follows the ANSI standard used in the United States and Canada. It is functionally equivalent to the H4 bulb used under international IEC standards, though the designations originate from different standardization bodies.
Because the 9003 and H4 share the same P43t base and dual-filament configuration, bulbs sold under either designation are generally considered cross-compatible, though confirmation against the original specification is advisable before substitution.
The consistent use of the 9003 across both beam positions reflects a single-bulb headlight system design, where one replaceable unit handles the full range of headlight output rather than separate bulbs for each function.