Harley-Davidson FXD Dyna Super Glide Headlight Bulb Size
Harley-Davidson FXD Dyna Super Glide headlight bulbs utilize a 9003 size for both high and low beam functions. The replacement chart covers 1995 to 2010 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 9003 is the sole bulb type specified across all headlight positions for the Harley-Davidson FXD Dyna Super Glide, covering model years 1995-2010.
The 9003 is a dual-filament halogen bulb, meaning a single unit contains separate filaments for both high and low beam functions, which accounts for its use in both headlight positions.
The bulb operates on a 12-volt electrical system and carries a wattage rating of 60W on the high beam filament and 55W on the low beam filament.
The 9003 uses a P43t base, a bayonet-style mount with a 43mm collar, which physically determines housing compatibility and is not interchangeable with bases of differing collar sizes.
The 9003 designation follows the ANSI standard used in the United States and Canada. It is electrically and functionally equivalent to the European H4 bulb, though minor physical differences between the two standards can affect fitment depending on the housing design.