The Vespa GT 200 Granturismo uses a 9003 bulb size for both high beam and low beam headlight applications. The replacement chart covers vehicle production years spanning 2004 to 2007 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 Vespa GT 200 Granturismo specifications, covering model years 2004-2007.
The 9003 is a dual-filament halogen bulb, meaning a single bulb unit contains two separate filaments to serve two distinct lighting functions.
The 9003 operates on a 12-volt electrical system and draws 60 watts on the high beam filament and 55 watts on the low beam filament.
The Vespa GT 200 Granturismo uses the same 9003 bulb for both its high beam and low beam headlight positions, a design made possible by the bulb's dual-filament construction.
The 9003 bulb uses a P43t base, which is a bayonet-style fitting with a 43mm flange. This base type is not universally interchangeable with other common automotive bases such as H4 or H7.
The 9003 designation is an ANSI standard classification used in the United States and Canada. The functionally equivalent bulb sold under European standards is the H4, though base and housing tolerances can differ between the two designations.