What Size Bulbs Does a 2016 BMW 340i Use?
Correct headlight, fog light, and tail light bulb sizes. Sourced from OEM catalog data.
Installation Difficulty
Hard (Tight clearances)
Est. Replacement Cost
$15 - $40 (Halogen) / $30+ (LED)
What Lighting System Does the 2016 BMW 340i Have?
When it comes to nighttime visibility, the 2016 BMW 340i relies on an arrangement of 6 specialized bulbs. It features a standard lighting system powered by a halogen-based setup where a single H7 dual-filament bulb handles both low and high beam duties within the same reflector. This model belongs to the early years of the 340i's 2016-2018 production span. Note that BMW vehicles typically feature a CANbus electrical monitor that checks for specific bulb resistance.
LED Flicker Warning
This vehicle is known to use a CANbus system. Installing standard LEDs may cause flickering.
Can You Put LED Bulbs in a 2016 BMW 340i?
Upgrading to LED is one of the most effective ways to modernize your BMW's appearance and safety profile. Since your 340i uses a single H7 bulb for both high and low beams, ensure your chosen LED kit is "dual-beam" compatible. This allows the LED circuitry to mimic the two-filament design of the original halogen bulb. Because BMW utilizes a CANbus system, standard LED bulbs may cause "bulb out" errors on your dashboard. Always opt for "Error-Free" or CANbus-ready kits which include the necessary resistors. Don't forget the H8 fog lights; switching these to LED can dramatically improve your visibility in adverse weather.
2016 BMW 340i Bulb Size Chart
| Position | Bulb Size | Shop |
|---|---|---|
| Fog Light | H8 | Buy H8 → |
| High Beam | H7 | Buy H7 → |
| Low Beam | H7 | Buy H7 → |
| Turn Signal Front | 3457NA | Buy 3457NA → |
| Parking Light | 3457NA | Buy 3457NA → |
| Dome Light | W5W | Buy W5W → |
How do the 2016 BMW 340i's bulbs compare to other years?
The 2017 model switched to a different bulb configuration.
This bulb configuration covers the 2016 model years. 2017 →
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