Suzuki Motorcycle C90 Boulevard uses a 9003 bulb size for both high beam and low beam headlight applications. The replacement chart covers vehicle production spanning 2005 to 2019 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 Suzuki Motorcycle C90 Boulevard uses the 9003 bulb size for both high beam and low beam headlight positions across the 2005-2009 and 2013-2019 model years.
The 9003 is an ANSI-standard bulb designation recognized in the United States and Canada, making it a regionally standardized specification rather than a globally universal one.
The 9003 is a dual-filament halogen bulb, meaning a single bulb contains two separate filaments that 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 for the high beam filament and 55W for 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 bulb type is functionally equivalent to the H4 bulb used in international markets. Both share the same dual-filament design and P43t base, though the 9003 designation is specific to the ANSI classification system.
Because the same 9003 bulb serves both the high beam and low beam positions on the Suzuki Motorcycle C90 Boulevard, the headlight assembly relies on a single bulb socket rather than separate housings for each beam function.