What is the low beam headlight bulb size for a 2004 Pontiac GTO?

The 2004 Pontiac GTO uses a H11 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 Pontiac GTO?

The high beam bulb size for the 2004 Pontiac GTO is H9.

Why are my 2004 Pontiac GTO headlights dim?

Dim headlights on a 2004 Pontiac GTO can be caused by aging halogen bulbs, which lose brightness over time, or oxidation (cloudiness) on the plastic headlight lenses. Upgrading to a H11 LED conversion kit can provide a significantly brighter and whiter light output.

Which bulb fits the 2004 Pontiac GTO fog light?

The 2004 Pontiac GTO uses a 9040 bulb for the fog light position.

Is the 2004 Pontiac GTO single or dual beam?

The 2004 Pontiac GTO 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 Pontiac GTO?

Yes, the 2004 Pontiac GTO comes with standard halogen bulbs from the factory, but they can be upgraded to LED. You will need a H11 LED conversion kit for the low beams.

Does the 2004 Pontiac GTO have fog lights?

Yes, the 2004 Pontiac GTO takes a 9040 bulb for the fog light position.

Did the 2004 Pontiac GTO change headlight bulb sizes from the previous year?

Yes — the 2004 Pontiac GTO uses different bulb sizes than the 1973 model. The 2004 generation introduced this bulb configuration.

Is the 2004 Pontiac GTO the first or last year to use H11 bulbs?

The 2004 Pontiac GTO is the only year in the 2004 generation to use the H11 bulb for the low beam headlight.

How do I change the headlight on a 2004 Pontiac GTO?

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 H11 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 Pontiac GTO?

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 H11 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 Pontiac GTO headlights?

A pair of halogen H11 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 Pontiac GTO?

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 H11 position are available as direct plug-and-play replacements.

The 2004 Pontiac GTO has a unique bulb configuration not shared with adjacent model years.

Fitment Guaranteed for 2004 Pontiac GTO

What Size Bulbs Does a 2004 Pontiac GTO 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 Pontiac GTO Have?

The 2004 Pontiac GTO utilizes a refined lighting configuration featuring 12 distinct bulb positions. It features an extensive lighting system powered by a dual-bulb halogen configuration using separate H11 low beam and H9 high beam bulbs for precise light distribution. This model belongs to the late years of the GTO's 1964-2006 production span.

Can You Put LED Bulbs in a 2004 Pontiac GTO?

Upgrading to LED is one of the most effective ways to modernize your Pontiac's appearance and safety profile. We recommend starting your upgrade with the H11 low beams, as they see the most use. Adding a matching H9 LED kit later will complete the look and ensure consistent lighting performance. Don't forget the 9040 fog lights; switching these to LED can dramatically improve your visibility in adverse weather.

2004 Pontiac GTO Bulb Size Chart

Position	Bulb Size	Shop
Low Beam	H11	Buy H11 →
Side Marker	168	Buy 168 →
Fog Light	9040	Buy 9040 →
High Beam	H9	Buy H9 →
Turn Signal Front	1157A	Buy 1157A →
Turn Signal Rear	1156A	Buy 1156A →
Reverse Light	1156	Buy 1156 →
License Plate	168	Buy 168 →
Brake Light	1157	Buy 1157 →
Tail Light	1157	Buy 1157 →
Parking Light	1157A	Buy 1157A →
Map Light	DE3175	Buy DE3175 →