The Kawasaki ZX900 Ninja headlight bulb uses a 9003 size for both high and low beam functions. The replacement chart covers vehicle production spanning 1984 to 2003.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The 9003 bulb is the sole headlight bulb type specified for the Kawasaki ZX900 Ninja across all listed model years, covering both the high beam and low beam positions.
The 9003 is an ANSI-standard halogen bulb recognized in the United States and Canada, operating on a 12-volt electrical system with a dual-filament design rated at 60 watts for high beam and 55 watts for low beam.
Because the 9003 carries two filaments within a single housing, it serves both the high beam and low beam functions from one bulb, which accounts for its use in both headlight positions on the ZX900 Ninja.
The 9003 uses a P43t base, a bayonet-style mount with a 43mm collar, which determines physical fitment and must be matched precisely when a replacement bulb is sourced.
The 9003 bulb is functionally interchangeable with the H4 bulb, as both share the same dual-filament halogen construction, P43t base, and 60W/55W ratings. The H4 designation follows the European ECE standard, while 9003 follows the ANSI standard.
The consistent use of the 9003 across the 1984-1986 and 1994-2003 model years indicates a stable headlight socket specification throughout the ZX900 Ninja's production span as listed in these specifications.