The Kawasaki EN500 Vulcan 500 headlight bulb uses a 9003 size for both high and low beam functions. The replacement chart covers 1990 to 2009 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 Kawasaki EN500 Vulcan 500 uses the 9003 bulb size for both the high beam and low beam headlight positions across the full 1990-2009 model range covered by these specifications.
The 9003 is an ANSI-standardized bulb type recognized in the United States and Canada, operating on a 12-volt electrical system with a dual-filament halogen design rated at 60 watts on high beam and 55 watts on low beam.
Because both the high beam and low beam positions share the same 9003 bulb, a single bulb serves both functions through its two internal filaments rather than requiring separate bulbs for each beam mode.
The 9003 bulb uses a P43t base, which is a bayonet-style mount with a 43mm flange. This base type determines physical fitment into the headlight housing and is not interchangeable with other base configurations.
The 9003 designation is the ANSI equivalent of the European H4 bulb. While the two types share the same general construction and wattage ratings, subtle differences in the base and lens configuration mean they are not universally interchangeable without confirming housing compatibility.