Honda Motorcycle CB750 Nighthawk headlight bulbs utilize a 9003 bulb size for both high and low beam functions. The replacement chart covers vehicle production spanning 1991 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 Honda Motorcycle CB750 Nighthawk across all model years from 1991-2003.
The 9003 is a dual-filament halogen bulb, meaning a single bulb unit contains two separate filaments: one rated at 60W for high beam operation and one rated at 55W for low beam operation.
Because the 9003 carries both filaments within one housing, the Honda Motorcycle CB750 Nighthawk uses the same bulb part number for both the high beam and low beam positions rather than two distinct bulb types.
The 9003 operates on a 12V electrical system and uses a P43t base, which is a bayonet-style base with a 43mm flange that physically locks the bulb into the headlight housing.
The 9003 designation follows the ANSI standard used in the United States and Canada, making it distinct from the European H4 bulb, which shares the same dual-filament halogen construction and wattage ratings but uses a different base designation under a separate standards body.
The consistent use of the 9003 across the full 1991-2003 production span indicates that the headlight housing design remained unchanged throughout the CB750 Nighthawk's production run as reflected in these specifications.