The Aprilia RXV 550 headlight bulb size specifications indicate both high beam and low beam applications utilize a 9003 bulb size for this motorcycle model. The replacement chart covers vehicle production years spanning 2006 to 2012 with corresponding bulb size data.
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 headlight bulb type specified for the Aprilia RXV 550 across the 2006-2012 model years covered in these specifications.
The 9003 is a dual-filament halogen bulb, meaning a single bulb unit contains two separate filaments to serve both high beam and low beam functions.
Because the 9003 handles both beam functions within one bulb, the Aprilia RXV 550 uses the same bulb size for its high beam and low beam headlight positions.
The 9003 operates on a 12-volt electrical system and carries 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 bayonet-style mount with a 43mm collar, and this base type determines physical fitment into the headlight housing.
The 9003 designation follows the ANSI standard used in the United States and Canada, and it is electrically and functionally equivalent to the international HB2 designation, though base orientation differences between 9003 and H4 bulbs can affect interchangeability depending on the housing design.