BMW 525i Back Up Light Bulb Size
The BMW 525i back up light utilizes bulb sizes 921 and P21W depending on the specific version of the vehicle. Available data for the lighting components covers the range from 1989 through 2007.
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 | US Type | EU Type | Shop |
|---|---|---|---|
| 2004-2007 | 921 | W16W | Check Price |
| 2001-2003 | 1156 | P21W | Check Price |
| 1989-1995 | 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). 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 |