The Kawasaki ZX750 GPZ uses a 9003 bulb size for both high beam and low beam headlight applications. The replacement chart covers 1983 to 1985 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 bulb is an ANSI-standardized halogen type used in both the high beam and low beam headlight positions of the Kawasaki ZX750 GPZ across the 1983-1985 model years.
The 9003 is a dual-filament bulb, meaning a single unit contains separate filaments for both high and low beam output, which accounts for its use in both headlight positions on this motorcycle.
The bulb operates at 12 volts 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 socket compatibility during replacement.
The 9003 designation follows ANSI standardization applicable to the United States and Canada, which distinguishes it from the functionally similar H4 bulb used in other markets that shares the same dual-filament halogen design but carries a different designation and may have slight base variations.