Moto Guzzi California Stone Touring Headlight Bulb Size
The Moto Guzzi California Stone Touring headlight bulb uses a 9003 size for both high and low beam functions. The replacement chart covers 2004 to 2005 production specifications.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The 9003 is a dual-filament halogen bulb operating at 12 volts, rated at 60 watts on the high beam filament and 55 watts on the low beam filament. It uses a P43t base and is designated under the ANSI standard applicable in the United States and Canada.
Because the 9003 carries both filaments within a single bulb, it serves the Moto Guzzi California Stone Touring's high beam and low beam positions with one bulb type across both functions.
The 9003 specification applies to the California Stone Touring across the 2004-2005 model years, covering both the high beam and low beam headlight positions without variation between those years.
The 9003 is electrically and physically equivalent to the H4 bulb used under European ECE standards, though the two designations reflect different regulatory frameworks. Substitution between them requires confirming that the replacement bulb's base and wattage ratings are compatible with the vehicle's socket and wiring.