Honda Motorcycle NT650 Hawk GT headlight utilizes a 9003 bulb size for both high and low beam functions. The replacement chart covers 1988 to 1991 production years with corresponding bulb specifications.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Honda Motorcycle NT650 Hawk GT uses the 9003 bulb size for both the high beam and low beam headlight positions across the 1988-1991 model years.
The 9003 is an ANSI-standard bulb designation recognized in the United States and Canada, making it a regionally standardized specification rather than a proprietary or manufacturer-specific size.
As a dual-filament halogen bulb, the 9003 houses both the high and low beam filaments within a single unit, which explains its application in both headlight positions on the NT650 Hawk GT.
The 9003 operates on a 12-volt electrical system and carries a wattage rating of 60W for the high beam filament and 55W for the low beam filament.
The 9003 uses a P43t base, a bayonet-style mount with a 43mm collar, which physically determines fitment compatibility and is not interchangeable with bulbs using different base types regardless of voltage or wattage similarity.
The 9003 bulb type is electrically equivalent to the H4 designation used in international markets, though the two share the same physical and electrical characteristics under different naming standards.