Harley-Davidson XLH883 headlight bulbs utilize a 9003 size for both high and low beam functions. The replacement chart covers 1986 to 2003 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 Harley-Davidson XLH883 uses the 9003 bulb size for both high beam and low beam headlight positions across the 1986-2003 model range.
The 9003 is a dual-filament halogen bulb, meaning a single unit contains two separate filaments: one rated at 60W for high beam output and one rated at 55W for low beam output.
Because both the high beam and low beam positions share the same 9003 specification, a single bulb type serves both lighting functions in the same housing rather than requiring two separate bulbs.
The 9003 operates on a 12-volt electrical system, which is standard for motorcycle applications in this category.
The 9003 uses a P43t base, a bayonet-style mount with a 43mm collar that physically locks the bulb into the housing at a fixed orientation to align the filaments correctly with the reflector.
The 9003 designation follows the ANSI standard used in the United States and Canada. It is electrically and physically equivalent to the H4 bulb used under international IEC standards, though the designations differ by market.