Kawasaki ER650 Z650 License Plate Bulb Size

The Kawasaki ER650 Z650 uses a 12961 bulb size for the license plate light fixture. The replacement chart covers 2019 to 2022 model production years with corresponding bulb specifications.

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
2019-2022	12961

Bulb Specifications

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

Additional Notes

The 12961 is a Philips part number designating a miniature wedge bulb in the T10 form factor, operating at 12 volts with a 5-watt output.
The T10 designation refers to the bulb's tubular shape, with the number indicating its width in eighths of an inch, making it one of the most widely used miniature bulb formats in automotive lighting applications.
The W2.1x9.5d base type is a wedge-style connector, meaning the bulb is held in place by tension from the socket rather than by a bayonet or screw mechanism.
The Kawasaki ER650 Z650 uses the 12961 bulb for the license plate position across the 2019-2022 model years.
Because the T10 wedge format is shared across many vehicle makes and models, substitutes from other manufacturers are generally available, provided they match the 12V, 5W rating and W2.1x9.5d base specification.
A 5-watt rating places this bulb in the low-power category typical of auxiliary and indicator lighting, as opposed to the higher wattages associated with headlamp or driving light applications.