The Harley-Davidson XL883L SuperLow headlight bulb uses a 9003 size for both high and low beam functions. Replacement specifications in the chart span 2005 to 2019 model years.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Harley-Davidson XL883L SuperLow uses the 9003 bulb for both high beam and low beam headlight functions across all model years from 2005-2019.
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.
The 9003 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 flange width, and this base type determines physical fitment into the headlight housing.
The 9003 is designated under the ANSI standard, which is the specification system used in the United States and Canada, as noted in the bulb description.
The 9003 and H4 bulbs share the same dual-filament halogen design and P43t base, making them functionally interchangeable in most applications, though the 9003 designation reflects the North American ANSI classification while H4 reflects the European ECE classification.