The Yamaha RS90 RS Vector uses a 9003 bulb size for both high beam and low beam headlight applications. The replacement chart covers vehicle production years spanning 2005 to 2017.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Yamaha RS90 RS Vector uses the 9003 bulb size for both the high beam and low beam headlight positions across the 2005-2017 model years.
The 9003 is an ANSI-standard bulb designation recognized in the United States and Canada, making it a regionally standardized specification rather than a proprietary or manufacturer-specific size.
The 9003 is a dual-filament halogen bulb, meaning a single bulb unit contains two separate filaments, one serving the high beam function and one serving the low beam function.
The 9003 bulb operates on a 12-volt electrical system and carries a wattage rating of 60W for the high beam filament and 55W for the low beam filament.
The 9003 bulb uses a P43t base, which is a bayonet-style mount with a 43mm flange. This base type determines physical fitment into the headlight housing and is not interchangeable with other base configurations.
Because the same bulb type fills both the high beam and low beam positions on the Yamaha RS90 RS Vector, a single 9003 bulb replacement covers both functions within one housing unit.
The 9003 designation is the ANSI equivalent of the internationally designated H4 bulb. Both share the same dual-filament halogen construction and P43t base, and the two designations are generally considered interchangeable in fitment contexts.