Kawasaki Z1000 License Plate Bulb Size

The Kawasaki Z1000 license plate bulb uses 12961 and 12821 sizes for this motorcycle model. The replacement chart covers 2003 through 2016 production 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
2010-2016	12961
2003-2008	12821

Bulb Specifications

Description	Bulb Size
Philips part number. Miniature wedge bulb (T10) with W2.1x9.5d base. 12V, 5W.	12961
Philips part number. Miniature wedge bulb (T10) with W2.1x9.5d base. 12V, 5W.	12821

Other Locations

Additional Notes

The Kawasaki Z1000 uses the T10 miniature wedge bulb form factor for its license plate light across all years listed in the specifications, from 2003 through 2016.
Both the 12961 and 12821 are Philips part numbers assigned to T10 wedge bulbs sharing identical electrical ratings of 12 volts and 5 watts, as well as the same W2.1x9.5d base type.
The W2.1x9.5d base is a standardized wedge-type base in which the bulb body itself acts as the contact point, requiring no separate metal pins or screw threads for installation.
The Kawasaki Z1000 (2003-2008) uses bulb size 12821 for the license plate position, while the 2010-2016 model years use bulb size 12961 instead.
Despite carrying different Philips part numbers, the 12821 and 12961 share the same T10 form factor, base type, voltage, and wattage, indicating that the two designations reflect catalog or product line distinctions within Philips rather than differences in physical or electrical characteristics.
The 5-watt rating places both bulbs in the low-power range typical of auxiliary lighting positions such as license plate illumination, where output requirements are minimal compared to headlamp or brake light circuits.