BMW 340 Bulb Size Guide | Exterior & Interior Lights

What is the correct light bulb size for BMW 340? It is a popular question as BMW 340 lamps tend to fade out and dim off over time due to the limited life span.

Our comprehensive chart will guide you through BMW 340 light bulb sizes for all interior and exterior lamp types like headlights, fog lights, turn signals, brake lights, tail lights, license plate, dome lights, trunk lights and many more.

You will learn how to upgrade BMW 340 with LED lights or install HID headlight conversion instead of spending countless hours trying to figure out the needed light bulb size.