Suzuki Motorcycle M90 Boulevard high beam and low beam headlight bulbs both use a 9003 size. The replacement chart covers 2009 through 2019 production years with bulb specifications.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Suzuki Motorcycle M90 Boulevard uses the 9003 bulb size for both the high beam and low beam headlight positions across the 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 proprietary or manufacturer-specific size.
The 9003 bulb is a dual-filament halogen type, meaning a single bulb contains two separate filaments that serve both the high beam and low beam functions within one housing.
The 9003 operates at 12 volts and carries a wattage rating of 60W for the high beam filament and 55W for the low beam filament, reflecting the higher power draw typically associated with high beam output.
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.
Because the same 9003 bulb serves both the high beam and low beam positions on the M90 Boulevard, a single replacement bulb type covers both headlight functions on this motorcycle.
The 9003 is electrically and physically equivalent to the H4 bulb used in international markets, though the two designations originate from different standards bodies. Fitment compatibility between them depends on the specific housing design.