The Suzuki Motorcycle M109RZ Boulevard Limited headlight bulb uses a 9003 size for both high beam and low beam functions. The replacement chart covers vehicle production spanning 2007 to 2014 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 the sole bulb type specified across all headlight positions on the Suzuki Motorcycle M109RZ Boulevard Limited, covering model years 2007-2014 with the exception of 2010.
The 9003 is a dual-filament halogen bulb, meaning a single unit contains two separate filaments that serve both high and low beam functions within one housing.
This bulb operates on a 12-volt electrical system and draws 60 watts on the high beam filament and 55 watts on the low beam filament.
The 9003 uses a P43t base, which is a bayonet-style mount with a 43mm collar, and this base type determines physical fitment into the headlight socket.
The 9003 designation follows the ANSI standard recognized in the United States and Canada, distinguishing it from the functionally similar H4 bulb used under European ECE standards, which shares the same wattage and dual-filament design but carries a different certification marking.
Because both the high beam and low beam headlight positions on the M109RZ Boulevard Limited use the same 9003 specification, a single bulb type serves the entire headlight assembly.
The H4 and 9003 are often treated as interchangeable in practice due to their shared electrical and physical characteristics, though the two carry different regional certifications that may affect regulatory compliance depending on the market.