The Yamaha XV1600 Road Star uses a 9003 bulb size for both high beam and low beam headlight applications. The replacement chart covers vehicle production years spanning 1999 to 2003.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Yamaha XV1600 Road Star uses the 9003 bulb size for both the high beam and low beam headlight positions across the 1999-2003 model years.
The 9003 is an ANSI-standardized bulb designation recognized in the United States and Canada, making it a regionally defined specification rather than a universal global standard.
The 9003 is a dual-filament halogen bulb, meaning a single bulb contains two separate filaments, one serving the high beam function and one serving the low beam function.
Because the 9003 carries both filaments within one unit, the XV1600 Road Star uses the same physical bulb in the same socket regardless of which beam position is being referenced.
The 9003 operates at 12 volts, with a wattage rating of 60W on the high beam filament and 55W on the low beam filament.
The 9003 uses a P43t base, which is a prefocus bayonet-style base with a 43mm cap width, and this base type determines physical socket compatibility.
The 9003 bulb is functionally equivalent to the H4 bulb used in international markets, sharing the same dual-filament design, voltage, wattage, and P43t base, though the designations differ by regional standard.
Because the high beam and low beam positions share the same 9003 specification across all listed model years, no position-specific or year-specific fitment variation exists within this application.