BMW Z4 Brake Bulb Size
The BMW Z4 brake light utilizes 921, P21/5W, and P21/4W bulb sizes depending on the specific version of the vehicle. Data for the bulb sizes covers the range from 2003 to 2016.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
Brake
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 |
|---|---|---|---|
| 2009-2016 | 921 (Adaptive) | W16W | Check Price |
| 2007-2008 | 1157 (Adaptive) | P21/5W | Check Price |
| 2003-2006 | P21/4W | P21/4W | Check Price |
Inner Brake
| Years | Bulb Type | Shop |
|---|---|---|
| 2006-2008 | H21W | Check Price |
Outer Brake
| Years | US Type | EU Type | Shop |
|---|---|---|---|
| 2006-2008 | 1156 | P21W | Check Price |
Bulb Specifications
| Description | Type | Shop |
|---|---|---|
| ANSI standard (US & Canada). Wedge bulb (T15). 12V, 16W. | 921 | 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). Dual-filament signalling bulb with BAZ15d bayonet base. 12V, 21W/4W. | P21/4W | Check Price |
| ECE standard (Europe & worldwide). Single-filament signalling bulb with BAY9s base. 12V, 21W. | H21W | 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 |