The Vespa LXV 150 headlight bulb uses a 9003 size for both high and low beam functions. The replacement chart covers 2007 to 2015 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 Vespa LXV 150 uses the 9003 bulb size for both the high beam and low beam headlight positions across the 2007-2015 model years.
The 9003 is a dual-filament halogen bulb, meaning a single bulb unit contains two separate filaments: one rated at 60W for high beam output and one rated at 55W for low beam output.
Because both filaments are housed in one bulb, the 9003 serves both beam functions simultaneously, which is why the same bulb size is listed under both the high beam and low beam positions in the specifications.
The 9003 operates on a 12-volt electrical system, consistent with standard 12V automotive and powersports applications.
The 9003 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.
The 9003 follows the ANSI standard used in the United States and Canada. It is electrically equivalent to the European H4 bulb, though the two types differ in base tab positioning, which can affect physical fitment depending on the housing design.