Moto Guzzi California EV high beam and low beam headlight bulbs both utilize a 9003 bulb size. The replacement chart covers vehicle production spanning 2001 to 2005.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Moto Guzzi California EV uses the 9003 bulb for both high beam and low beam headlight positions across the 2001-2005 model years.
The 9003 is a dual-filament halogen bulb, meaning a single bulb contains two separate filaments: one rated at 60W for high beam operation and one rated at 55W for low beam operation.
Because both the high beam and low beam positions share the same 9003 bulb type, a single bulb serves both lighting functions rather than requiring two separate bulb types.
The 9003 operates on a 12V electrical system, which is standard for motorcycle applications in this class.
The 9003 uses a P43t base, a bayonet-style mount with a 43mm flange that physically locks the bulb into the headlight housing.
The 9003 designation follows the ANSI standard used in the United States and Canada. It is functionally equivalent to the H4 bulb used under European and international standards, though fitment interchangeability between the two designations depends on the specific housing design.