Honda Motorcycle CB650 uses 9003 bulb size for both high beam and low beam headlight applications. The replacement chart covers 1981 to 1982 model 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 a dual-filament halogen bulb operating at 12 volts, with a high beam output of 60 watts and a low beam output of 55 watts. It uses a P43t base, which is a standardized bayonet-style fitting common in automotive and motorcycle lighting applications.
The 9003 designation follows the ANSI standard used in the United States and Canada. Its dual-filament design allows a single bulb to serve both high and low beam functions within one housing.
The Honda Motorcycle CB650 uses the 9003 bulb for both the high beam and low beam headlight positions across the 1981-1982 model years, with no variation between those two functions or those two years.
Because the high beam and low beam positions share the same 9003 bulb specification, the CB650 headlight assembly relies on the bulb's internal dual-filament construction rather than separate bulbs to switch between beam modes.