The Harley-Davidson FLHF uses an H5006 bulb size for both high beam and low beam headlight applications. The replacement chart covers 1970 to 1972 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 H5006 is the sole bulb type listed across all positions in the Harley-Davidson FLHF specifications, covering both the high beam and low beam headlight positions for the 1970-1972 model years.
The H5006 is a 5.75-inch round sealed beam unit operating at 12 volts, conforming to ANSI standards applicable in the United States and Canada.
As a sealed beam unit, the H5006 does not contain a separately replaceable filament or bulb element. The entire assembly is the replaceable component.
The Harley-Davidson FLHF uses the same H5006 specification for both the high beam and low beam headlight positions, meaning a single sealed beam unit serves both lighting functions within a shared housing arrangement.