What is the low beam headlight bulb size for a 2021 Acura ILX?

The 2021 Acura ILX uses a LED Headlights bulb for the low beam headlights. We recommend upgrading to LED for better visibility.

What is the high beam headlight bulb size for a 2021 Acura ILX?

The high beam bulb size for the 2021 Acura ILX is LED Headlights.

Why are my 2021 Acura ILX headlights dim?

Dim headlights on a 2021 Acura ILX can be caused by aging halogen bulbs, which lose brightness over time, or oxidation (cloudiness) on the plastic headlight lenses. Upgrading to a LED Headlights LED conversion kit can provide a significantly brighter and whiter light output.

Which bulb fits the 2021 Acura ILX fog light?

The 2021 Acura ILX uses a LED Fog Light bulb for the fog light position.

Is the 2021 Acura ILX single or dual beam?

The 2021 Acura ILX uses a single bulb (dual filament) headlight system. This means one bulb controls both high and low beams.

Can I install LED bulbs on my 2021 Acura ILX?

Yes, the 2021 Acura ILX comes with standard halogen bulbs from the factory, but they can be upgraded to LED. You will need a LED Headlights LED conversion kit for the low beams.

Does the 2021 Acura ILX have fog lights?

Yes, the 2021 Acura ILX takes a LED Fog Light bulb for the fog light position.

Did the 2021 Acura ILX change headlight bulb sizes from the previous year?

Yes — the 2021 Acura ILX uses different bulb sizes than the 2020 model. The 2021 generation introduced this bulb configuration.

How do I change the headlight on a 2021 Acura ILX?

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 LED Headlights 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 2021 Acura ILX?

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 LED Headlights 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 2021 Acura ILX headlights?

A pair of halogen LED Headlights 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 2021 Acura ILX?

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 LED Headlights position are available as direct plug-and-play replacements.

The 2021 Acura ILX has a unique bulb configuration not shared with adjacent model years.

Fitment Guaranteed for 2021 Acura ILX

What Size Bulbs Does a 2021 Acura ILX 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 2021 Acura ILX Have?

Lighting on the 2021 Acura ILX is managed by a total of 14 bulbs, covering everything from primary headlights to signal indicators. It features an extensive lighting system powered by factory-integrated LED technology, which offers superior longevity and a modern cool-white appearance compared to traditional bulbs. This model belongs to the late years of the ILX's 2013-2022 production span.

Can You Put LED Bulbs in a 2021 Acura ILX?

Upgrading to LED is one of the most effective ways to modernize your Acura's appearance and safety profile. Since your ILX uses a single LED Headlights 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. Don't forget the LED Fog Light fog lights; switching these to LED can dramatically improve your visibility in adverse weather.

2021 Acura ILX Bulb Size Chart

Position	Bulb Size	Shop
Low Beam	LED Headlights	Buy LED Headlights →
High Beam	LED Headlights	Buy LED Headlights →
Fog Light	LED Fog Light	Buy LED Fog Light →
Brake Light	High Mount Brake Light	Buy High Mount Brake Light →
Dome Light	175	Buy 175 →
Side Marker	LED Bulbs	Buy LED Bulbs →
Turn Signal Front	LED Bulbs	Buy LED Bulbs →
License Plate	168	Buy 168 →
Map Light	LED Light	Buy LED Light →
Parking Light	LED Bulbs	Buy LED Bulbs →
Turn Signal Rear	7440NA	Buy 7440NA →
Reverse Light	921	Buy 921 →
Trunk Light	168	Buy 168 →
Tail Light	7528	Buy 7528 →

How do the 2021 Acura ILX's bulbs compare to other years?

The 2021 Acura ILX changed bulb sizes from 2020. The previous model year used a different configuration.

The 2022 model switched to a different bulb configuration.

This bulb configuration covers the 2021 model years. ← 2020 2022 →

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Other ILX Years

2022 2020 2019 2018 2017 2016 2015 2014 2013