What is the low beam headlight bulb size for a 2018 BMW M240i?

The 2018 BMW M240i uses a H7 LED bulb for the low beam headlights. We recommend upgrading to LED for better visibility.

What is the high beam headlight bulb size for a 2018 BMW M240i?

The high beam bulb size for the 2018 BMW M240i is H15 LED.

Why are my 2018 BMW M240i headlights dim?

Dim headlights on a 2018 BMW M240i can be caused by aging halogen bulbs, which lose brightness over time, or oxidation (cloudiness) on the plastic headlight lenses. Upgrading to a H7 LED LED conversion kit can provide a significantly brighter and whiter light output.

Which bulb fits the 2018 BMW M240i fog light?

The 2018 BMW M240i uses a H8 LED bulb for the fog light position.

Is the 2018 BMW M240i single or dual beam?

The 2018 BMW M240i uses a dual bulb headlight system. This means you have separate bulbs for high and low beams.

Can I install LED bulbs on my 2018 BMW M240i?

Yes, the 2018 BMW M240i comes with standard halogen bulbs from the factory, but they can be upgraded to LED. You will need a H7 LED LED conversion kit for the low beams.

Does the 2018 BMW M240i have fog lights?

Yes, the 2018 BMW M240i takes a H8 LED bulb for the fog light position.

Did the 2018 BMW M240i change headlight bulb sizes from the previous year?

No — the 2018 BMW M240i uses the same bulb sizes as the 2017 model. This configuration has been consistent across the 2017–2018 generation.

Is the 2018 BMW M240i the first or last year to use H7 LED bulbs?

The 2018 BMW M240i is the last year in the 2017–2018 generation to use the H7 LED bulb for the low beam headlight.

How do I change the headlight on a 2018 BMW M240i?

Turn off the vehicle and open the hood. Locate the headlight assembly from behind, remove the dust cover or retaining clip, disconnect the wiring harness, twist the old H7 LED bulb counter-clockwise to remove it, then insert the new bulb and reassemble. Note: BMW vehicles use a CANbus system, so LED replacements may need an anti-flicker decoder. The whole process typically takes 10 to 30 minutes per side depending on accessibility.

Are LED headlights legal for a 2018 BMW M240i?

LED bulbs used off-road or in auxiliary lights are legal everywhere. For on-road headlight use, legality varies by state. Many states allow LED retrofits as long as the beam pattern meets DOT standards. For the best legal compliance, choose a DOT-approved H7 LED LED kit that is designed as a direct replacement and produces a proper cutoff pattern without excessive glare.

How much does it cost to replace 2018 BMW M240i headlights?

A pair of halogen H7 LED bulbs costs $15 to $40, while LED conversion kits run $25 to $60 per pair. If you have a shop do the work, expect an additional $20 to $50 in labor per bulb. Replacing them yourself at home saves the labor cost and usually takes under 30 minutes.

What is the difference between halogen and LED for a 2018 BMW M240i?

Halogen bulbs produce a warm yellow light (around 3200K), last 500 to 1000 hours, and draw more power. LED bulbs emit a brighter white light (5000-6000K), last 25,000+ hours, and use less energy. LED upgrades for the H7 LED position are available as direct plug-and-play replacements. Since the BMW uses CANbus monitoring, choose a CANbus-compatible LED kit to avoid dashboard errors.

The 2018 BMW M240i is the last model year to use this bulb configuration (2017–2018).

Fitment Guaranteed for 2018 BMW M240i

What Size Bulbs Does a 2018 BMW M240i 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 2018 BMW M240i Have?

When it comes to nighttime visibility, the 2018 BMW M240i relies on an arrangement of 13 specialized bulbs. It features an extensive lighting system powered by a dual-bulb halogen configuration using separate H7 LED low beam and H15 LED high beam bulbs for precise light distribution. This model belongs to the mid years of the M240i's 2017-2020 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.

Use a CANbus decoder.

Can You Put LED Bulbs in a 2018 BMW M240i?

Upgrading to LED is one of the most effective ways to modernize your BMW's appearance and safety profile. We recommend starting your upgrade with the H7 LED low beams, as they see the most use. Adding a matching H15 LED LED kit later will complete the look and ensure consistent lighting performance. 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 LED fog lights; switching these to LED can dramatically improve your visibility in adverse weather.

2018 BMW M240i Bulb Size Chart

Position	Bulb Size	Shop
Low Beam	H7 LED	Buy H7 LED →
High Beam	H15 LED	Buy H15 LED →
Fog Light	H8 LED	Buy H8 LED →
Brake Light	LED Bulb	Buy LED Bulb →
Turn Signal Front	12496 LED	Buy 12496 LED →
Turn Signal Rear	7506 LED	Buy 7506 LED →
Dome Light	2825	Buy 2825 →
License Plate	LED Bulb	Buy LED Bulb →
Map Light	2825	Buy 2825 →
Parking Light	64132	Buy 64132 →
Reverse Light	7506	Buy 7506 →
Trunk Light	6418	Buy 6418 →
Daytime Running	H15	Buy H15 →

How do the 2018 BMW M240i's bulbs compare to other years?

The 2018 BMW M240i uses the same bulbs as the 2017 model.

The 2019 model switched to a different bulb configuration.

This bulb configuration covers the 2017–2018 model years. ← 2017 2019 →

Finding the best installation guide...

Other M240i Years

2020 2019 2017

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