BMW 318i Side Marker Bulb Size
The BMW 318i front and rear side marker bulb size specifications include P21/5W and P21/4W options, with alternative part numbers 12961 and 3893 available for this bulb size. The replacement chart covers vehicle production years spanning 1984 to 1998 with corresponding bulb size data.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
Front Side Marker
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 |
|---|---|---|---|
| 1997-1998 | 1157 | P21/5W | Check Price |
| 1995-1996 | 12961 | 12961 | Check Price |
| 1993-1994 | 1157 | P21/5W | Check Price |
| 1991 | 12961 | 12961 | Check Price |
| 1984-1985 | 3893 | 3893 | Check Price |
Rear Side Marker
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 |
|---|---|---|---|
| 1997-1998 | 1157 | P21/5W | Check Price |
| 1993-1994 | P21/4W | P21/4W | Check Price |
| 1984-1985 | 3893 | 3893 | Check Price |
Bulb Specifications
| Description | Type | Shop |
|---|---|---|
| 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 |
| Philips part number. Miniature wedge bulb (T10) with W2.1x9.5d base. 12V, 5W. | 12961 | Check Price |
| ANSI standard (US & Canada). Dual-filament bulb with BAY15d bayonet base, specialty application. 12V. | 3893 | Check Price |
| ECE standard (Europe & worldwide). Dual-filament signalling bulb with BAZ15d bayonet base. 12V, 21W/4W. | P21/4W | Check Price |