BMW Z4 Turn Signal Bulb Size
BMW Z4 front and rear turn signal bulbs utilize multiple size options including PY24WNA, H21W, P21W for front applications and 12496, PY21W, P21W for rear positions, with bulb sizes varying across model generations. The replacement chart covers 2003 through 2016 production years and documents bulb size specifications for turn signal applications.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
Front Turn Signal
| Years | Bulb Size |
|---|---|
| 2009-2016 | PY24WNA |
| 2005-2008 | H21W |
| 2003-2004 | P21W |
Rear Turn Signal
| Years | Bulb Size |
|---|---|
| 2007-2008 | 12496 |
| 2006 | PY21W |
| 2005 | 12496 |
| 2003-2004 | P21W |
Bulb Specifications
| Description | Bulb Size |
|---|---|
| ANSI standard (US & Canada). Amber variant of ECE PY24W with PGU20-4 base. 12V, 24W. | PY24WNA |
| ECE standard (Europe & worldwide). Single-filament signalling bulb with BAY9s base. 12V, 21W. | H21W |
| ECE standard (Europe & worldwide). Single-filament signalling bulb with BA15s bayonet base. 12V, 21W. | P21W |
| Philips/Osram part number. Halogen bulb, specialty application. 12V. | 12496 |
| ECE standard (Europe & worldwide). Single-filament amber bulb with BAU15s bayonet base. 12V, 21W. | PY21W |