Honda Motorcycle CB1000 uses a 9003 bulb size for both high beam and low beam headlight applications. The replacement chart covers 1994 to 1995 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 dual-filament halogen bulb rated at 12 volts, with a high beam filament drawing 60 watts and a low beam filament drawing 55 watts. It uses a P43t base.
Because the 9003 contains two filaments within a single bulb, it serves both the high beam and low beam functions from one unit. The Honda Motorcycle CB1000 (1994-1995) relies on this single bulb type across both headlight positions.
The 9003 designation is specific to the ANSI standard used in the United States and Canada. It is physically and electrically equivalent to the international H4 designation, though the two part numbers originate from different standardization systems and cross-compatibility depends on the specific socket and housing configuration of the vehicle.
The P43t base is a three-pronged bayonet-style fitting. Its design corresponds directly to the dual-filament nature of the 9003, as the additional contact point is required to supply power independently to each filament.