The Yamaha RX10 RX-1 headlight bulb uses a 9003 size for both high beam and low beam applications. The replacement chart covers 2003 to 2005 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 bulb is the sole bulb type listed across all headlight positions in the Yamaha RX10 RX-1 specifications, covering model years 2003-2005.
The 9003 is a dual-filament halogen bulb, meaning a single bulb unit contains two separate filaments: one rated at 60W for high beam operation and one rated at 55W for low beam operation.
Because the 9003 serves both the high beam and low beam positions in the Yamaha RX10 RX-1, the same physical bulb handles both lighting functions rather than requiring separate bulbs for each.
The 9003 operates on a 12V electrical system, which is standard for most automotive and powersport applications.
The 9003 uses a P43t base, a bayonet-style mount with a 43mm collar. This base type is specific to the 9003 and its international equivalent, the H4, and is not interchangeable with single-filament base types such as P14.5t or P22d.
The 9003 is designated as an ANSI standard applicable in the United States and Canada. Its functional equivalent in international markets is the H4, though labeling and packaging may differ by region.
The halogen designation indicates the bulb contains a tungsten filament within a quartz envelope filled with halogen gas, which extends filament life and maintains lumen output relative to standard incandescent bulbs.