What is the low beam headlight bulb size for a 1999 Audi A8?

The 1999 Audi A8 uses a HID-D2S 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 1999 Audi A8?

The high beam bulb size for the 1999 Audi A8 is 9005 LED.

Why are my 1999 Audi A8 headlights dim?

Dim headlights on a 1999 Audi A8 can be caused by aging halogen bulbs, which lose brightness over time, or oxidation (cloudiness) on the plastic headlight lenses. Upgrading to a HID-D2S LED LED conversion kit can provide a significantly brighter and whiter light output.

Which bulb fits the 1999 Audi A8 fog light?

The 1999 Audi A8 uses a H3 LED bulb for the fog light position.

Is the 1999 Audi A8 single or dual beam?

The 1999 Audi A8 uses a dual bulb headlight system. This means you have separate bulbs for high and low beams.

Can I install LED bulbs on my 1999 Audi A8?

Yes, the 1999 Audi A8 comes with standard halogen bulbs from the factory, but they can be upgraded to LED. You will need a HID-D2S LED LED conversion kit for the low beams.

Does the 1999 Audi A8 have fog lights?

Yes, the 1999 Audi A8 takes a H3 LED bulb for the fog light position.

Did the 1999 Audi A8 change headlight bulb sizes from the previous year?

No — the 1999 Audi A8 uses the same bulb sizes as the 1998 model. This configuration has been consistent across the 1998–1999 generation.

Is the 1999 Audi A8 the first or last year to use HID-D2S LED bulbs?

The 1999 Audi A8 is the last year in the 1998–1999 generation to use the HID-D2S LED bulb for the low beam headlight.

How do I change the headlight on a 1999 Audi A8?

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-D2S LED bulb counter-clockwise to remove it, then insert the new bulb and reassemble. Note: Audi vehicles use a CANbus system, so LED replacements may need an anti-flicker decoder. The whole process typically takes 10 to 30 minutes per side depending on accessibility.

Are LED headlights legal for a 1999 Audi A8?

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-D2S 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 1999 Audi A8 headlights?

A pair of HID HID-D2S 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 1999 Audi A8?

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-D2S LED position are available as direct plug-and-play replacements. Since the Audi uses CANbus monitoring, choose a CANbus-compatible LED kit to avoid dashboard errors.

The 1999 Audi A8 is the last model year to use this bulb configuration (1998–1999).

Fitment Guaranteed for 1999 Audi A8

What Size Bulbs Does a 1999 Audi A8 Use?

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

Installation Difficulty

Hard (Tight clearances)

Est. Replacement Cost

$50 - $150 (HID System)

What Lighting System Does the 1999 Audi A8 Have?

Lighting on the 1999 Audi A8 is managed by a total of 14 bulbs, covering everything from primary headlights to signal indicators. It features an extensive lighting system powered by premium factory HID/Xenon technology utilizing D2S projector housings for high-intensity output. This model belongs to the early years of the A8's 1997-2018 production span. Note that Audi vehicles typically feature a CANbus electrical monitor that checks for specific bulb resistance.

LED Flicker Warning

This vehicle is known to use a CANbus system. Installing standard LEDs may cause flickering.

Use a CANbus decoder.

Can You Put LED Bulbs in a 1999 Audi A8?

The 1999 Audi A8 is already equipped with factory D2S 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 H3 LED fog lights are typically halogen and are excellent candidates for an LED upgrade to match the color temperature of your HID headlights.

1999 Audi A8 Bulb Size Chart

Position	Bulb Size	Shop
Low Beam	HID-D2S LED	Buy HID-D2S LED →
High Beam	9005 LED	Buy 9005 LED →
Fog Light	H3 LED	Buy H3 LED →
Brake Light	2825	Buy 2825 →
Dome Light	6411	Buy 6411 →
Turn Signal Front	2357NA	Buy 2357NA →
Side Marker	2825	Buy 2825 →
License Plate	6418	Buy 6418 →
Map Light	47830	Buy 47830 →
Parking Light	2825	Buy 2825 →
Turn Signal Rear	7506	Buy 7506 →
Reverse Light	7506	Buy 7506 →
Trunk Light	6418	Buy 6418 →
Tail Light	7528	Buy 7528 →

How do the 1999 Audi A8's bulbs compare to other years?

The 1999 Audi A8 uses the same bulbs as the 1998 model.

The 2000 model switched to a different bulb configuration.

This bulb configuration covers the 1998–1999 model years. ← 1998 2000 →

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Other A8 Years

2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 2004 2003 2002 2001 2000 1998 1997

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