The Kawasaki EN650 Vulcan S headlight bulb uses a 9003 size for both high and low beam functions. The replacement chart covers 2015 to 2020 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 EN650 Vulcan S uses the 9003 bulb for both high beam and low beam headlight positions across the 2015-2020 model years.
The 9003 is an ANSI-standard designation recognized in the United States and Canada, making it the North American equivalent of the internationally designated H4 bulb.
As a dual-filament bulb, the 9003 houses two separate tungsten filaments within a single glass envelope, with one filament dedicated to high beam output and the other to low beam output.
The 9003 operates at 12 volts and draws 60 watts on the high beam filament and 55 watts on the low beam filament.
The bulb uses a P43t base, which is a three-pronged bayonet-style mount with a 43mm collar, a design that physically prevents incorrect filament orientation during installation.
Because both the high beam and low beam positions share the same 9003 specification on the EN650 Vulcan S, a single bulb type serves the entire headlight assembly rather than requiring separate part numbers for each function.
The halogen construction of the 9003 relies on a halogen gas cycle within the bulb envelope, which redeposits evaporated tungsten back onto the filament and extends the operational life of the bulb compared to standard incandescent types.