Suzuki Motorcycle GSX250R headlight bulb utilizes 9003 size for both high beam and low beam functions. Replacement chart covers 2018 to 2019 production years 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 9003 is an ANSI-standard bulb designation used in the United States and Canada, making it a region-specific classification for what is otherwise internationally known as the H4 bulb type.
The 9003 bulb operates on a 12-volt electrical system and carries a dual-wattage rating of 60W for high beam and 55W for low beam, which reflects its dual-filament halogen construction.
The dual-filament design of the 9003 allows a single bulb to serve both high and low beam functions within one housing, rather than requiring separate bulbs for each function.
The Suzuki Motorcycle GSX250R uses the 9003 bulb size for both its high beam and low beam headlight positions across the 2018-2019 model years.
Because both beam positions share the same bulb type, the high beam and low beam headlights on the GSX250R are served by physically identical units, meaning the same replacement bulb fits either socket.
The P43t base is the standardized mounting base of the 9003 bulb, and only bulbs with this specific base type are compatible with the GSX250R headlight sockets for the 2018-2019 model years.