Kawasaki EX400 Ninja 400 License Plate Bulb Size

The Kawasaki EX400 Ninja 400 license plate bulb uses a 12961 size bulb for illumination of the rear registration area. The replacement chart covers 2018 to 2022 model years with corresponding bulb size 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
2018-2022	12961

Bulb Specifications

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

Additional Notes

The Kawasaki EX400 Ninja 400 uses the 12961 bulb for its license plate light across the 2018-2022 model years.
The 12961 is a Philips part number designating a miniature wedge bulb in the T10 form factor, rated at 12 volts and 5 watts.
The T10 designation refers to a tubular bulb with a width of 10/8 of an inch, commonly found in low-current automotive lighting positions such as license plate and courtesy lights.
The base type is W2.1x9.5d, a wedge-style base that relies on tension from the socket contacts rather than a bayonet or screw mechanism to maintain its connection.
At 5 watts, the 12961 draws minimal current, which is typical for a license plate application where continuous illumination is required without significant electrical load.
The consistent use of a single bulb specification across all five listed model years indicates uniform fitment within this generation of the EX400 Ninja 400.