Suzuki Motorcycle C50 Boulevard uses 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 C50 Boulevard uses the 9003 bulb size for both the high beam and low beam headlight positions across the 2005-2019 model years, with the exception of 2010, for which no data is listed.
The 9003 is an ANSI-standard designation recognized in the United States and Canada, making it a regionally specific classification rather than a universal international standard.
The 9003 is a dual-filament halogen bulb, meaning a single bulb unit contains two separate filaments that serve the high beam and low beam functions independently within one housing.
The bulb 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.
Because the same 9003 bulb serves both the high beam and low beam positions on the C50 Boulevard, a single replacement bulb type addresses both headlight functions rather than requiring two separate part numbers.
The 9003 designation is functionally equivalent to the international HB2 classification, and bulbs sold under either designation share the same filament configuration, base type, and electrical ratings.
The consistent use of the 9003 across both beam positions and across all listed model years indicates that the headlight assembly on the C50 Boulevard was not revised to accommodate a different bulb format during the 2005-2019 production span.