What is the low beam headlight bulb size for a 2004 Lincoln Aviator?

The 2004 Lincoln Aviator uses a HID-D2R LED 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 Lincoln Aviator?

The high beam bulb size for the 2004 Lincoln Aviator is 9005 LED.

Why are my 2004 Lincoln Aviator headlights dim?

Dim headlights on a 2004 Lincoln Aviator can be caused by aging halogen bulbs, which lose brightness over time, or oxidation (cloudiness) on the plastic headlight lenses. Upgrading to a HID-D2R LED LED conversion kit can provide a significantly brighter and whiter light output.

Which bulb fits the 2004 Lincoln Aviator fog light?

The 2004 Lincoln Aviator uses a 9140 bulb for the fog light position.

Is the 2004 Lincoln Aviator single or dual beam?

The 2004 Lincoln Aviator 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 Lincoln Aviator?

Yes, the 2004 Lincoln Aviator comes with standard halogen bulbs from the factory, but they can be upgraded to LED. You will need a HID-D2R LED LED conversion kit for the low beams.

Does the 2004 Lincoln Aviator have fog lights?

Yes, the 2004 Lincoln Aviator takes a 9140 bulb for the fog light position.

Did the 2004 Lincoln Aviator change headlight bulb sizes from the previous year?

No — the 2004 Lincoln Aviator 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 Lincoln Aviator?

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 HID-D2R LED 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 Lincoln Aviator?

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 HID-D2R LED 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 Lincoln Aviator headlights?

A pair of HID HID-D2R LED bulbs costs $50 to $150. 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 Lincoln Aviator?

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 HID-D2R LED position are available as direct plug-and-play replacements.

The 2004 Lincoln Aviator shares its bulb sizes with the 2003–2005 generation.

Fitment Guaranteed for 2004 Lincoln Aviator

What Size Bulbs Does a 2004 Lincoln Aviator Use?

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

Installation Difficulty

Easy (Plug and Play)

Est. Replacement Cost

$50 - $150 (HID System)

What Lighting System Does the 2004 Lincoln Aviator Have?

When it comes to nighttime visibility, the 2004 Lincoln Aviator relies on an arrangement of 13 specialized bulbs. It features an extensive lighting system powered by premium factory HID/Xenon technology utilizing D2R projector housings for high-intensity output. This model belongs to the mid years of the Aviator's 2003-2005 production span.

Can You Put LED Bulbs in a 2004 Lincoln Aviator?

The 2004 Lincoln Aviator is already equipped with factory D2R HID/Xenon headlights. Since HID technology already provides exceptional brightness, we recommend staying with high-quality OEM replacement bulbs rather than attempting an LED retrofit for the primary headlights. However, the 9140 fog lights are typically halogen and are excellent candidates for an LED upgrade to match the color temperature of your HID headlights.

2004 Lincoln Aviator Bulb Size Chart

Position	Bulb Size	Shop
Low Beam	HID-D2R LED	Buy HID-D2R LED →
High Beam	9005 LED	Buy 9005 LED →
Fog Light	9140	Buy 9140 →
Brake Light	3157CK	Buy 3157CK →
Side Marker	2827 LED	Buy 2827 LED →
Turn Signal Front	2827 LED	Buy 2827 LED →
Turn Signal Rear	3057K LED	Buy 3057K LED →
Dome Light	578	Buy 578 →
License Plate	168	Buy 168 →
Parking Light	3157AK	Buy 3157AK →
Reverse Light	3156K	Buy 3156K →
Trunk Light	578	Buy 578 →
Tail Light	916	Buy 916 →

How do the 2004 Lincoln Aviator's bulbs compare to other years?

The 2004 Lincoln Aviator uses the same bulbs as the 2003 model.

The 2005 model continues with the same bulb sizes.

This bulb configuration covers the 2003–2005 model years. ← 2003 2005 →

Finding the best installation guide...

Other Aviator Years

2005 2003

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