BMW M3 Back Up Light Bulb Size
The BMW M3 back up light utilizes H21W, P21W, and 921 bulb sizes depending on the specific production version. Available data for the lighting components spans from 1988 through 2018.
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
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 |
|---|---|---|---|
| 2017-2018 | H21W | H21W | Check Price |
| 2015 | 1156 | P21W | Check Price |
| 2008-2013 | 921 | W16W | Check Price |
| 2001-2006 | 1156 | P21W | Check Price |
| 1995-1999 | 1156 | P21W | Check Price |
| 1988-1991 | 1156 | P21W | Check Price |
Bulb Specifications
| Description | Type | Shop |
|---|---|---|
| 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 |
| ANSI standard (US & Canada). Wedge bulb (T15). 12V, 16W. | 921 | Check Price |