The Yamaha XJ750 Maxim headlight bulb uses a 9003 size for both high and low beam functions. The replacement chart covers 1982 to 1983 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 an ANSI-standard halogen bulb used in the United States and Canada, operating at 12 volts with a dual-filament design rated at 60 watts on high beam and 55 watts on low beam.
The dual-filament construction of the 9003 allows a single bulb to serve both high and low beam functions, which is reflected in the Yamaha XJ750 Maxim sharing the same bulb size across both beam positions.
The 9003 uses a P43t base, a standardized bayonet-style fitting that determines physical socket compatibility.
The 1982-1983 XJ750 Maxim uses the 9003 bulb for both the high beam and low beam headlight positions across both model years.
The H4 bulb is the international equivalent of the 9003 and shares the same filament configuration and wattage ratings, though the 9003 designation is specific to the ANSI standard applied in North America.
Because the high beam and low beam positions share the same 9003 specification, substituting a single-filament bulb in either socket would not satisfy the dual-filament requirement of the original fitment.