The Harley-Davidson FXS Low Rider uses H5006 bulb size for both high beam and low beam headlight applications. The replacement chart covers 1977 through 1982 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 the sole bulb type specified across all listed model years of the Harley-Davidson FXS Low Rider, covering both high beam and low beam headlight positions from 1977-1982.
The H5006 is a sealed beam unit, meaning the lens, reflector, and filament are fused into a single assembly. When the filament fails, the entire unit requires replacement rather than an internal bulb swap.
The H5006 conforms to ANSI standards recognized in both the United States and Canada, placing it within a standardized specification framework common to North American automotive and motorcycle lighting of that era.
The unit measures 5.75 inches in round format, a sealed beam size that was widely used across motorcycles and light vehicles during the period covered by these specifications.
Operating voltage is rated at 12V, consistent with the standard 12-volt electrical systems found in motorcycles of this type.
Because the Harley-Davidson FXS Low Rider uses the same H5006 unit for both the high beam and low beam positions, the sealed beam assembly handles both functions internally through separate filaments within the single unit.
The H5006 designation follows the ANSI sealed beam numbering system, and substitution with physically similar sealed beam types should account for filament configuration, voltage rating, and the 5.75-inch round form factor to avoid fitment or electrical incompatibility.