Moto Guzzi California 1400 License Plate Bulb Size

The Moto Guzzi California 1400 license plate bulb uses a 12961 size specification across all production variants. The replacement chart covers 2013 through 2018 model years with corresponding bulb size data.

The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.

Bulb Size by Year Range

Years	Bulb Size
2013-2018	12961

Bulb Specifications

Description	Bulb Size
Philips part number. Miniature wedge bulb (T10) with W2.1x9.5d base. 12V, 5W.	12961

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Additional Notes

The Moto Guzzi California 1400 uses the 12961 bulb for the license plate light across all available model years, spanning 2013-2018.
The 12961 is a Philips part number designating a miniature wedge-type bulb in the T10 form factor.
T10 refers to the bulb's tubular shape, with the number indicating a width of 10 millimeters.
The bulb uses a W2.1x9.5d wedge base, which is a baseless design where the glass envelope itself acts as the retention mechanism within the socket.
The electrical rating of the 12961 is 12 volts at 5 watts, consistent with standard low-current automotive auxiliary lighting applications.
The W2.1x9.5d base type is also commonly referred to as a W5W fitment in general automotive contexts, a designation that describes the wattage and base configuration rather than a specific manufacturer part number.
Because the 12961 is a manufacturer-specific part number from Philips, equivalent bulbs from other manufacturers are cross-referenced by their shared T10 form factor and W2.1x9.5d base rather than by the Philips number alone.