Harley-Davidson XL1200T SuperLow 1200T uses a 9003 bulb size for both high beam and low beam headlight applications. The replacement chart covers 2014 through 2017 vehicle 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 9003 bulb is the sole bulb type specified across all headlight positions for the Harley-Davidson XL1200T SuperLow 1200T, covering the 2014-2017 model years.
The 9003 is a dual-filament halogen bulb, meaning a single bulb unit contains two separate filaments to serve both high and low beam functions within one housing.
This bulb operates on a 12-volt electrical system and carries a wattage rating of 60W on the high beam filament and 55W 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 housing.
The 9003 designation follows the ANSI standard applicable 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 halogen design but differs in base and certification.
Because the high beam and low beam headlight positions share the same 9003 specification across all listed years, a single bulb type serves both functions on this motorcycle.
The consistent 9003 specification across the 2014-2017 model years indicates direct parts interchangeability between those model years for headlight bulb replacement.