Kawasaki Z1000 Parking Light Bulb Size

Kawasaki Z1000 parking light bulb utilizes a 12961 size designation with P21/5W bulb specifications across the model line. The replacement chart covers 2003 through 2013 production 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
2010-2013	12961
2007-2008	12961
2003-2006	P21/5W

Bulb Specifications

Description	Bulb Size
Philips part number. Miniature wedge bulb (T10) with W2.1x9.5d base. 12V, 5W.	12961
ECE standard (Europe & worldwide). Dual-filament signalling bulb with BAY15d bayonet base. 12V, 21W/5W.	P21/5W

Other Locations

Additional Notes

The Kawasaki Z1000 parking light specifications cover the 2003-2013 model years, with two distinct bulb types appearing across that span: the P21/5W for 2003-2006 and the 12961 for 2007-2013.
The 12961 is a Philips part number designating a T10 miniature wedge bulb with a W2.1x9.5d base, rated at 12V and 5W. The T10 form factor is among the smallest bulb types used in automotive lighting applications.
The P21/5W follows the ECE (Economic Commission for Europe) naming standard and uses a BAY15d bayonet base. It is a dual-filament bulb rated at 12V with filaments drawing 21W and 5W respectively, making it significantly higher in wattage than the 12961.
The BAY15d base of the P21/5W features two offset pins that prevent incorrect installation, a design intended to ensure the correct filament is assigned to the correct circuit.
The W2.1x9.5d wedge base of the 12961 relies on the bulb's glass envelope and wire leads for retention rather than a separate metal base, which is a defining characteristic of the wedge bulb family.
The two bulb types are not interchangeable. The 12961 and P21/5W differ in base type, wattage, and filament count, meaning a direct substitution between the 2003-2006 and 2007-2013 fitments is not possible without modification.
The P21/5W designation is governed by ECE regulations and is widely used in markets outside North America, reflecting a standardized approach to bulb identification based on wattage and base type rather than a manufacturer-specific part number.