What is the low beam headlight bulb size for a 2004 Hyundai Sonata?

The 2004 Hyundai Sonata 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 2004 Hyundai Sonata?

The high beam bulb size for the 2004 Hyundai Sonata is H1.

Why are my 2004 Hyundai Sonata headlights dim?

Dim headlights on a 2004 Hyundai Sonata 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 2004 Hyundai Sonata fog light?

The 2004 Hyundai Sonata uses a 9006 bulb for the fog light position.

Is the 2004 Hyundai Sonata single or dual beam?

The 2004 Hyundai Sonata uses a dual bulb headlight system. This means you have separate bulbs for high and low beams.

Can I install LED bulbs on my 2004 Hyundai Sonata?

Yes, the 2004 Hyundai Sonata 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.

Does the 2004 Hyundai Sonata have fog lights?

Yes, the 2004 Hyundai Sonata takes a 9006 bulb for the fog light position.

Did the 2004 Hyundai Sonata change headlight bulb sizes from the previous year?

No — the 2004 Hyundai Sonata uses the same bulb sizes as the 2003 model. This configuration has been consistent across the 2003–2005 generation.

How do I change the headlight on a 2004 Hyundai Sonata?

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 2004 Hyundai Sonata?

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 2004 Hyundai Sonata 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 2004 Hyundai Sonata?

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 2004 Hyundai Sonata shares its bulb sizes with the 2003–2005 generation.

Fitment Guaranteed for 2004 Hyundai Sonata

What Size Bulbs Does a 2004 Hyundai Sonata Use?

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

Installation Difficulty

Easy (Plug and Play)

Est. Replacement Cost

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

What Lighting System Does the 2004 Hyundai Sonata Have?

Lighting on the 2004 Hyundai Sonata is managed by a total of 9 bulbs, covering everything from primary headlights to signal indicators. It features a comprehensive lighting system powered by a dual-bulb halogen configuration using separate H7 low beam and H1 high beam bulbs for precise light distribution. This model belongs to the mid years of the Sonata's 1989-2020 production span.

Can You Put LED Bulbs in a 2004 Hyundai Sonata?

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 H1 LED kit later will complete the look and ensure consistent lighting performance. Don't forget the 9006 fog lights; switching these to LED can dramatically improve your visibility in adverse weather.

2004 Hyundai Sonata Bulb Size Chart

Position	Bulb Size	Shop
Fog Light	9006	Buy 9006 →
High Beam	H1	Buy H1 →
Low Beam	H7	Buy H7 →
License Plate	168	Buy 168 →
Turn Signal Rear	1156A	Buy 1156A →
Brake Light	1157	Buy 1157 →
Side Marker	1157	Buy 1157 →
Tail Light	1157	Buy 1157 →
Reverse Light	1156	Buy 1156 →