The Triumph Daytona 600 uses a 9003 bulb size for both high beam and low beam headlight applications. The replacement chart covers 2003 to 2004 model 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 9003 is the sole bulb type across all listed positions and years for the Triumph Daytona 600, covering both high beam and low beam headlight functions for the 2003-2004 model years.
The 9003 is a dual-filament halogen bulb, meaning a single physical unit contains two separate filaments: one rated at 60W for high beam output and one at 55W for low beam output.
Operating voltage for the 9003 is 12V, which is standard for motorcycle electrical systems of this type.
The 9003 uses a P43t base, a bayonet-style fitting with a 43mm flange that locates and locks the bulb into the headlight housing.
The 9003 designation follows the ANSI standard used in the United States and Canada, distinguishing it from the functionally similar H4 bulb used under European ECE standards, which shares the same dual-filament design and P43t base but is classified under a different regulatory framework.
Because the Daytona 600 uses the same 9003 bulb for both the high beam and low beam positions, the two functions are served by a single bulb assembly rather than separate individual bulbs for each function.