Kawasaki Z1000 Turn Signal Bulb Size

Kawasaki Z1000 front turn signal bulbs utilize PY21W, 12496, or P21/5W size specifications, while rear turn signal bulbs require P21W size. The replacement chart covers 2003 through 2013 model 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.

Front Turn Signal

If US Type and EU Type show the same value, a direct cross-reference for this bulb is not available or the data is insufficient.

Years	US Type	EU Type	Shop
2013	7507	PY21W	Check Price
2012	12496	12496	Check Price
2011	7507	PY21W	Check Price
2010	12496	12496	Check Price
2008	12496	12496	Check Price
2007	7507	PY21W	Check Price
2003-2006	1157	P21/5W	Check Price

Rear Turn Signal

Years	US Type	EU Type	Shop
2003-2006	1156	P21W	Check Price

Bulb Specifications

Description	Type	Shop
ECE standard (Europe & worldwide). Single-filament amber bulb with BAU15s bayonet base. 12V, 21W.	PY21W	Check Price
Philips/Osram part number. Halogen bulb, specialty application. 12V.	12496	Check Price
ECE standard (Europe & worldwide). Dual-filament signalling bulb with BAY15d bayonet base. 12V, 21W/5W.	P21/5W	Check Price
ANSI standard (US & Canada). Dual-filament bulb with BAY15d bayonet base. 12V, 21W/5W.	1157	Check Price
ECE standard (Europe & worldwide). Single-filament signalling bulb with BA15s bayonet base. 12V, 21W.	P21W	Check Price
ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. 12V, 21W.	1156	Check Price

Other Locations

Additional Notes

The Kawasaki Z1000 front turn signal position draws from three distinct bulb types across its model years: PY21W, 12496, and P21/5W. Each carries a different base type and filament configuration, making them physically and electrically incompatible with one another despite sharing the same general application.
The PY21W is an ECE-standard single-filament amber bulb rated at 12V and 21W, fitted with a BAU15s offset bayonet base. The offset pin arrangement of the BAU15s base is a deliberate anti-substitution feature, preventing the installation of non-amber bulbs in amber-designated sockets.
The P21/5W is an ECE-standard dual-filament bulb rated at 12V with a 21W primary filament and a 5W secondary filament, using a BAY15d bayonet base. Its dual-filament design distinguishes it from the single-filament P21W, and the two are not interchangeable despite sharing a similar physical profile.
The P21W is an ECE-standard single-filament bulb rated at 12V and 21W, using a BA15s bayonet base. It serves the rear turn signal position on the Z1000 for the 2003-2006 model years.
The 12496 designation is a Philips and Osram part number for a 12V halogen bulb intended for specialty applications. It appears in the Z1000 front turn signal position for the 2008, 2010, and 2012 model years.
The front turn signal on the 2003-2006 Z1000 uses the P21/5W, a dual-filament bulb, while the rear turn signal for the same years uses the single-filament P21W. The differing filament counts reflect distinct circuit requirements between the two positions and preclude cross-substitution.
The BAU15s, BAY15d, and BA15s bayonet bases used across these bulb types differ in pin offset and spacing. Substituting one base type for another is not physically possible without modification to the socket.
The front turn signal specification alternates between PY21W and 12496 across the 2007-2013 model years, with PY21W fitted in 2007, 2011, and 2013, and 12496 fitted in 2008, 2010, and 2012. These two bulb types are not confirmed as interchangeable within the provided specifications.