BMW 340i Turn Signal Bulb Size
The BMW 340i front turn signal bulb uses 3357NA and 3457NA sizes for the replacement bulb specifications. The replacement chart covers 2016 through 2018 vehicle production years 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 Turn Signal
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 |
|---|---|---|---|
| 2018 | 3357NA (With Halogen Capsule Headlamps) | 3357NA | Check Price |
| 2017 | 3457NA (With Halogen Capsule Headlamps) | PY27/7W | Check Price |
| 2016 | 3357NA (With Halogen Capsule Headlamps) | 3357NA | Check Price |
Bulb Specifications
| Description | Type | Shop |
|---|---|---|
| ANSI standard (US & Canada). Single-filament wedge bulb (T25), natural amber glass. 12V, 27W. | 3357NA | Check Price |
| ANSI standard (US & Canada). Dual-filament wedge bulb (T25), natural amber glass. 12V, 27W/7W. | 3457NA | Check Price |