Honda Motorcycle NX650 uses a 9003 bulb size for both high beam and low beam headlight applications. The replacement chart covers 1988 to 1989 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 60W high beam filament and a 55W low beam filament. It uses a P43t base and conforms to the ANSI standard applicable in the United States and Canada.
The Honda Motorcycle NX650 uses the 9003 bulb for both the high beam and low beam headlight positions across the 1988-1989 model years.
Because a single 9003 bulb contains two filaments, it serves both beam functions within one housing rather than requiring separate bulbs for each beam position.
The P43t base is a three-pronged bayonet-style base. Its physical configuration is specific to bulbs in the 9003 family, and substitutes with differing base types are not compatible with this fitment.
The 9003 designation is the ANSI classification used in North America. The same bulb is internationally designated as H4, though regulatory and labeling differences exist between the two standards.