Moto Guzzi California Classic Touring Headlight Bulb Size
The Moto Guzzi California Classic Touring headlight bulb uses a 9003 size for both high and low beam functions. The replacement chart covers 2006 to 2007 production 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 an ANSI-standard halogen type recognized in the United States and Canada, operating at 12 volts with a dual-filament design rated at 60 watts on the high beam filament and 55 watts on the low beam filament.
The P43t base is the mounting interface of the 9003 bulb, a bayonet-style fitting with a 43mm collar that positions and locks the bulb into the headlight housing.
The Moto Guzzi California Classic Touring uses the 9003 bulb for both its high beam and low beam headlight positions across the 2006-2007 model years.
Because the 9003 serves both beam functions in this application, the high and low beam outputs are produced by switching between the two filaments within a single bulb rather than by separate bulbs in separate housings.
The 9003 and H4 bulb types share the same dual-filament halogen construction and P43t base, making them functionally interchangeable in many applications, though the 9003 designation is the ANSI classification used in North American markets while H4 is the ECE classification used elsewhere.