Honda Motorcycle XL350R uses a 9003 bulb size for both high beam and low beam headlight applications. The replacement chart covers 1984 to 1985 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 bulb is an ANSI-standard halogen type used in the United States and Canada, operating at 12 volts with a dual-filament design rated at 60 watts on high beam and 55 watts on low beam.
The 9003 bulb uses a P43t base, which is a bayonet-style mount with a 43mm collar, a common fitment in halogen headlight applications.
The Honda Motorcycle XL350R uses the 9003 bulb for both the high beam and low beam headlight positions, meaning a single bulb type serves both lighting functions through its dual-filament construction.
The 9003 fitment applies to the 1984-1985 model years of the XL350R across both headlight functions without variation.
Because the high and low beams share one bulb, replacing the unit affects both filaments simultaneously, and a failure in either filament requires full bulb replacement.
The 9003 is interchangeable with the H4 bulb in many applications, as both share the P43t base and dual-filament layout, though the 9003 designation reflects the ANSI standard while H4 follows the ECE standard used outside North America.