The Honda Motorcycle GL1500CF Valkyrie Interstate uses a 9003 bulb size for both high beam and low beam headlight applications. The replacement chart covers 1999 to 2001 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 a dual-filament halogen bulb, meaning a single bulb contains two separate filaments: one rated at 60W for high beam operation and one rated at 55W for low beam operation.
The Honda Motorcycle GL1500CF Valkyrie Interstate uses the 9003 bulb for both the high beam and low beam headlight positions across the 1999-2001 model years.
Because the same 9003 bulb serves both headlight positions, the high and low beam functions are handled by a single physical bulb rather than two separate units.
The 9003 designation is an ANSI standard classification recognized in the United States and Canada, and the bulb operates on a 12-volt electrical system.
The 9003 bulb uses a P43t base, which is a bayonet-style mount with a 43mm collar. This base type determines physical fitment and is not interchangeable with bulbs using different base configurations.
The 9003 and H4 bulbs share the same dual-filament halogen design and P43t base, and are widely regarded as functionally equivalent, though the 9003 designation is the ANSI classification while H4 is the ECE classification used in other markets.