What is the low beam headlight bulb size for a 2018 Hyundai Elantra GT?

The 2018 Hyundai Elantra GT uses a H7 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 Hyundai Elantra GT?

The high beam bulb size for the 2018 Hyundai Elantra GT is 9005.

Why are my 2018 Hyundai Elantra GT headlights dim?

Dim headlights on a 2018 Hyundai Elantra GT 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 conversion kit can provide a significantly brighter and whiter light output.

Which bulb fits the 2018 Hyundai Elantra GT fog light?

The 2018 Hyundai Elantra GT 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 2018 Hyundai Elantra GT single or dual beam?

The 2018 Hyundai Elantra GT 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 Hyundai Elantra GT?

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

Did the 2018 Hyundai Elantra GT change headlight bulb sizes from the previous year?

Yes — the 2018 Hyundai Elantra GT uses different bulb sizes than the 2017 model. The 2018 generation introduced this bulb configuration.

Is the 2018 Hyundai Elantra GT the first or last year to use H7 bulbs?

The 2018 Hyundai Elantra GT is the only year in the 2018 generation to use the H7 bulb for the low beam headlight.

How do I change the headlight on a 2018 Hyundai Elantra GT?

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 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 2018 Hyundai Elantra GT?

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 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 Hyundai Elantra GT headlights?

A pair of halogen H7 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 Hyundai Elantra GT?

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

The 2018 Hyundai Elantra GT has a unique bulb configuration not shared with adjacent model years.

Fitment Guaranteed for 2018 Hyundai Elantra GT

What Size Bulbs Does a 2018 Hyundai Elantra GT 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 2018 Hyundai Elantra GT Have?

When it comes to nighttime visibility, the 2018 Hyundai Elantra GT relies on an arrangement of 9 specialized bulbs. It features a comprehensive lighting system powered by a dual-bulb halogen configuration using separate H7 low beam and 9005 high beam bulbs for precise light distribution.

Can You Put LED Bulbs in a 2018 Hyundai Elantra GT?

Upgrading to LED is one of the most effective ways to modernize your Hyundai's appearance and safety profile. We recommend starting your upgrade with the H7 low beams, as they see the most use. Adding a matching 9005 LED kit later will complete the look and ensure consistent lighting performance.

2018 Hyundai Elantra GT Bulb Size Chart

Position	Bulb Size	Shop
Side Marker	W5W	Buy W5W →
Low Beam	H7	Buy H7 →
Turn Signal Front	1156A	Buy 1156A →
High Beam	9005	Buy 9005 →
Turn Signal Rear	1156A	Buy 1156A →
Reverse Light	921	Buy 921 →
Tail Light	W5W	Buy W5W →
License Plate	W5W	Buy W5W →
Dome Light	DE3175	Buy DE3175 →