BMW 330i Turn Signal Bulb Size
The BMW 330i uses multiple turn signal bulb sizes including PY21W, 12496, P21W, 12961, 3457NA, and 3357NA across front inner, front outer, and rear positions. The replacement chart covers 2001 through 2018 model years with corresponding bulb size specifications.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
Front Inner Turn Signal
| Years | Bulb Size |
|---|---|
| 2006 | PY21W |
| 2004-2005 | 12496 |
| 2001 | P21W |
Front Outer Turn Signal
| Years | Bulb Size |
|---|---|
| 2004-2006 | 12961 |
| 2001 | 12961 |
Front Turn Signal
| Years | Bulb Size |
|---|---|
| 2018 | 3457NA (With Halogen Capsule Headlamps) |
| 2017 | 3357NA (With Halogen Capsule Headlamps) |
| 2006 | PY21W |
| 2004-2005 | P21W (Front, White) |
| PY21W (Front, Yellow) | |
| 12961 (Side) | |
| 2002-2003 | P21W |
| 2001 | P21W |
| 12961 (Side) |
Rear Turn Signal
| Years | Bulb Size |
|---|---|
| 2004-2006 | P21W |
| 2003 | 12496 |
| 2002 | PY21W |
| 2001 | P21W |
Bulb Specifications
| Description | Bulb Size |
|---|---|
| ECE standard (Europe & worldwide). Single-filament amber bulb with BAU15s bayonet base. 12V, 21W. | PY21W |
| Philips/Osram part number. Halogen bulb, specialty application. 12V. | 12496 |
| ECE standard (Europe & worldwide). Single-filament signalling bulb with BA15s bayonet base. 12V, 21W. | P21W |
| Philips part number. Miniature wedge bulb (T10) with W2.1x9.5d base. 12V, 5W. | 12961 |
| ANSI standard (US & Canada). Dual-filament wedge bulb (T25), natural amber glass. 12V, 27W/7W. | 3457NA |
| ANSI standard (US & Canada). Single-filament wedge bulb (T25), natural amber glass. 12V, 27W. | 3357NA |