Harley-Davidson FXRT Sport Glide Headlight Bulb Size
Harley-Davidson FXRT Sport Glide headlight bulbs utilize an H5006 size for both high and low beam functions. The replacement chart covers 1983 to 1991 production years with corresponding bulb specifications.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The H5006 is an ANSI-standardized sealed beam unit used in the United States and Canada, operating at 12 volts with a 5.75-inch round form factor.
Unlike bulb-based headlights, the H5006 is a sealed beam unit, meaning the lens, reflector, and filament are fused into a single assembly that is replaced as a whole when the filament fails.
The Harley-Davidson FXRT Sport Glide uses the H5006 for both the high beam and low beam headlight positions across the 1983-1986 and 1991 model years covered in these specifications.
The use of a single bulb size for both beam functions indicates the FXRT Sport Glide relies on a dual-filament sealed beam design, where separate filaments within the same unit serve each lighting mode.
Because the H5006 follows an ANSI standard, units from different manufacturers sharing that designation are dimensionally and electrically equivalent, which allows cross-brand substitution without fitment concerns.
The 5.75-inch round sealed beam format was a widely adopted standard in motorcycle and automotive lighting, making H5006 units broadly available through general automotive and powersports supply channels.