Suzuki Motorcycle M50 Boulevard uses 9003 bulb size for both high beam and low beam headlight applications. The replacement chart covers 2005 through 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 Suzuki Motorcycle M50 Boulevard uses the 9003 bulb size across all listed model years from 2005-2019, covering both the high beam and low beam headlight positions.
The 9003 is an ANSI-standardized bulb designation used in the United States and Canada, operating on a 12-volt electrical system with a dual-filament halogen design rated at 60 watts for high beam and 55 watts for low beam.
Because both the high beam and low beam positions on the Suzuki M50 Boulevard share the same 9003 specification, a single bulb type serves both functions within one housing unit, which is characteristic of dual-filament bulb designs.
The 9003 bulb uses a P43t base, a bayonet-style three-tab mount that physically positions the filaments at a precise location relative to the reflector, which is critical for proper light projection.
The 9003 designation is the ANSI equivalent of the internationally recognized H4 bulb type; the two are electrically and mechanically compatible in most applications, though the naming convention differs by region.
The consistent use of the 9003 specification across the 2005-2019 model year range indicates that the same replacement bulb applies to the Suzuki M50 Boulevard regardless of which year within that span is being serviced.