Honda Motorcycle XL600R headlight bulbs utilize a 9003 size for both high and low beam functions. The replacement chart covers 1983 to 1987 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 Honda Motorcycle XL600R uses the 9003 bulb for both the high beam and low beam headlight positions across all model years from 1983-1987.
The 9003 is a dual-filament halogen bulb, meaning a single bulb unit contains two separate filaments: one rated at 60W for high beam output and one rated at 55W for low beam output.
The 9003 operates on a 12-volt electrical system, which is standard for motorcycle applications of this type.
The 9003 uses a P43t base, a bayonet-style mount with a 43mm collar that positions and locks the bulb into the headlight housing.
The 9003 designation follows the ANSI standard, which applies to the United States and Canada, and is the North American equivalent of the internationally designated H4 bulb.
Because the same 9003 bulb serves both the high beam and low beam positions, the XL600R headlight assembly uses a single-bulb, dual-function design rather than separate bulbs for each beam mode.
The H4 and 9003 share the same physical base and filament configuration, which means aftermarket bulbs labeled as either designation are generally interchangeable in this application.