What is the low beam headlight bulb size for a 1999 Lexus GS400?

The 1999 Lexus GS400 uses a 9006 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 Lexus GS400?

The high beam bulb size for the 1999 Lexus GS400 is 9005.

Why are my 1999 Lexus GS400 headlights dim?

Dim headlights on a 1999 Lexus GS400 can be caused by aging halogen bulbs, which lose brightness over time, or oxidation (cloudiness) on the plastic headlight lenses. Upgrading to a 9006 LED conversion kit can provide a significantly brighter and whiter light output.

Which bulb fits the 1999 Lexus GS400 fog light?

The 1999 Lexus GS400 uses a 9006 bulb for the fog light position.

Is the 1999 Lexus GS400 single or dual beam?

The 1999 Lexus GS400 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 Lexus GS400?

Yes, the 1999 Lexus GS400 comes with standard halogen bulbs from the factory, but they can be upgraded to LED. You will need a 9006 LED conversion kit for the low beams.

Does the 1999 Lexus GS400 have fog lights?

Yes, the 1999 Lexus GS400 takes a 9006 bulb for the fog light position.

Did the 1999 Lexus GS400 change headlight bulb sizes from the previous year?

Yes — the 1999 Lexus GS400 uses different bulb sizes than the 1998 model. The 1999 generation introduced this bulb configuration.

Is the 1999 Lexus GS400 the first or last year to use 9006 bulbs?

The 1999 Lexus GS400 is the only year in the 1999 generation to use the 9006 bulb for the low beam headlight.

How do I change the headlight on a 1999 Lexus GS400?

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 9006 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 1999 Lexus GS400?

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 9006 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 Lexus GS400 headlights?

A pair of halogen 9006 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 1999 Lexus GS400?

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 9006 position are available as direct plug-and-play replacements.

The 1999 Lexus GS400 has a unique bulb configuration not shared with adjacent model years.

Fitment Guaranteed for 1999 Lexus GS400

What Size Bulbs Does a 1999 Lexus GS400 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 1999 Lexus GS400 Have?

When it comes to nighttime visibility, the 1999 Lexus GS400 relies on an arrangement of 14 specialized bulbs. It features an extensive lighting system powered by a dual-bulb halogen configuration using separate 9006 low beam and 9005 high beam bulbs for precise light distribution. This model belongs to the mid years of the GS400's 1998-2000 production span.

Can You Put LED Bulbs in a 1999 Lexus GS400?

Upgrading to LED is one of the most effective ways to modernize your Lexus's appearance and safety profile. We recommend starting your upgrade with the 9006 low beams, as they see the most use. Adding a matching 9005 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.

1999 Lexus GS400 Bulb Size Chart

Position	Bulb Size	Shop
Low Beam	9006	Buy 9006 →
Side Marker	194	Buy 194 →
Turn Signal Front	1156	Buy 1156 →
High Beam	9005	Buy 9005 →
Fog Light	9006	Buy 9006 →
Turn Signal Rear	7440	Buy 7440 →
Brake Light	7443	Buy 7443 →
Tail Light	7443	Buy 7443 →
Parking Light	168	Buy 168 →
License Plate	168	Buy 168 →
Reverse Light	7440	Buy 7440 →
Door Light	194	Buy 194 →
Trunk Light	168	Buy 168 →
Dome Light	DE3175	Buy DE3175 →

How do the 1999 Lexus GS400's bulbs compare to other years?

The 1999 Lexus GS400 changed bulb sizes from 1998. The previous model year used a different configuration.

The 2000 model switched to a different bulb configuration.

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

Finding the best installation guide...

Other GS400 Years

2000 1998

Other Vehicles That Use 9006 Bulbs

2020 GMC Savana 2500 2020 GMC Savana 3500 2017 Mitsubishi Lancer 2016 Chevrolet Express 1500-3500 2015 Chevrolet Express 4500 2015 GMC Savana 4500

9006 Comparisons

9005 vs 9006 9006 vs H11 9006 vs HB4