What is the low beam headlight bulb size for a 2020 Alfa Romeo 4C?

The 2020 Alfa Romeo 4C uses a 9012 bulb for the low beam headlights. We recommend upgrading to LED for better visibility.

What is the high beam headlight bulb size for a 2020 Alfa Romeo 4C?

The high beam bulb size for the 2020 Alfa Romeo 4C is N/A.

Why are my 2020 Alfa Romeo 4C headlights dim?

Dim headlights on a 2020 Alfa Romeo 4C can be caused by aging halogen bulbs, which lose brightness over time, or oxidation (cloudiness) on the plastic headlight lenses. Upgrading to a 9012 LED conversion kit can provide a significantly brighter and whiter light output.

Which bulb fits the 2020 Alfa Romeo 4C fog light?

The 2020 Alfa Romeo 4C typically does not come with factory fog lights in all trim levels. If your vehicle is equipped with them, check the manual as sizes can vary by trim.

Is the 2020 Alfa Romeo 4C single or dual beam?

The 2020 Alfa Romeo 4C uses a dual bulb headlight system. This means you have separate bulbs for high and low beams.

Can I install LED bulbs on my 2020 Alfa Romeo 4C?

Yes, the 2020 Alfa Romeo 4C comes with standard halogen bulbs from the factory, but they can be upgraded to LED. You will need a 9012 LED conversion kit for the low beams.

Did the 2020 Alfa Romeo 4C change headlight bulb sizes from the previous year?

Yes — the 2020 Alfa Romeo 4C uses different bulb sizes than the 2019 model. The 2020 generation introduced this bulb configuration.

Is the 2020 Alfa Romeo 4C the first or last year to use 9012 bulbs?

The 2020 Alfa Romeo 4C is the only year in the 2020 generation to use the 9012 bulb for the low beam headlight.

How do I change the headlight on a 2020 Alfa Romeo 4C?

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 9012 bulb counter-clockwise to remove it, then insert the new bulb and reassemble. The whole process typically takes 10 to 30 minutes per side depending on accessibility.

Are LED headlights legal for a 2020 Alfa Romeo 4C?

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 9012 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 2020 Alfa Romeo 4C headlights?

A pair of halogen 9012 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 2020 Alfa Romeo 4C?

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 9012 position are available as direct plug-and-play replacements.

The 2020 Alfa-Romeo 4C has a unique bulb configuration not shared with adjacent model years.

Fitment Guaranteed for 2020 Alfa-Romeo 4C

What Size Bulbs Does a 2020 Alfa-Romeo 4C Use?

Correct headlight, fog light, and tail light bulb sizes. Sourced from OEM catalog data.

Installation Difficulty

Moderate (Dust covers often present)

Est. Replacement Cost

$15 - $40 (Halogen) / $30+ (LED)

What Lighting System Does the 2020 Alfa-Romeo 4C Have?

The 2020 Alfa-Romeo 4C utilizes a refined lighting configuration featuring 4 distinct bulb positions. It features a standard lighting system powered by a dual-bulb halogen configuration using separate 9012 low beam and high beam bulbs for precise light distribution.

Can You Put LED Bulbs in a 2020 Alfa-Romeo 4C?

Upgrading to LED is one of the most effective ways to modernize your Alfa-Romeo's appearance and safety profile. We recommend starting your upgrade with the 9012 low beams, as they see the most use. Adding a matching LED kit later will complete the look and ensure consistent lighting performance.

2020 Alfa-Romeo 4C Bulb Size Chart

Position	Bulb Size	Shop
Low Beam	9012	Buy 9012 →
Reverse Light	921	Buy 921 →
License Plate	W5W	Buy W5W →
Trunk Light	W5W	Buy W5W →

How do the 2020 Alfa-Romeo 4C's bulbs compare to other years?

The 2020 Alfa-Romeo 4C changed bulb sizes from 2019. The previous model year used a different configuration.

This bulb configuration covers the 2020 model years. ← 2019

Finding the best installation guide...

Other 4C Years

2019 2018 2017 2016 2015 2014

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9012 Comparisons

9012 vs H11 9012 vs HIR2