What is the low beam headlight bulb size for a 2003 Lexus IS300?

The 2003 Lexus IS300 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 2003 Lexus IS300?

The high beam bulb size for the 2003 Lexus IS300 is 9005 LED.

Why are my 2003 Lexus IS300 headlights dim?

Dim headlights on a 2003 Lexus IS300 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 2003 Lexus IS300 fog light?

The 2003 Lexus IS300 uses a H3 LED bulb for the fog light position.

Is the 2003 Lexus IS300 single or dual beam?

The 2003 Lexus IS300 uses a dual bulb headlight system. This means you have separate bulbs for high and low beams.

Can I install LED bulbs on my 2003 Lexus IS300?

Yes, the 2003 Lexus IS300 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 2003 Lexus IS300 have fog lights?

Yes, the 2003 Lexus IS300 takes a H3 LED bulb for the fog light position.

Did the 2003 Lexus IS300 change headlight bulb sizes from the previous year?

No — the 2003 Lexus IS300 uses the same bulb sizes as the 2002 model. This configuration has been consistent across the 2002–2005 generation.

How do I change the headlight on a 2003 Lexus IS300?

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 2003 Lexus IS300?

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 2003 Lexus IS300 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 2003 Lexus IS300?

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 2003 Lexus IS300 shares its bulb sizes with the 2002–2005 generation.

Fitment Guaranteed for 2003 Lexus IS300

What Size Bulbs Does a 2003 Lexus IS300 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 2003 Lexus IS300 Have?

Owners of the 2003 Lexus IS300 will find a total of 14 lighting elements throughout the vehicle's exterior. 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 early years of the IS300's 2001-2022 production span.

Can You Put LED Bulbs in a 2003 Lexus IS300?

The 2003 Lexus IS300 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 H3 LED fog lights are typically halogen and are excellent candidates for an LED upgrade to match the color temperature of your HID headlights.

2003 Lexus IS300 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	H3 LED	Buy H3 LED →
Brake Light	74	Buy 74 →
Side Marker	194 LED	Buy 194 LED →
Turn Signal Front	7440NA LED	Buy 7440NA LED →
Turn Signal Rear	7440NA LED	Buy 7440NA LED →
Reverse Light	921	Buy 921 →
Dome Light	DE3175	Buy DE3175 →
License Plate	168	Buy 168 →
Parking Light	168	Buy 168 →
Trunk Light	DE3022	Buy DE3022 →
Tail Light	7443	Buy 7443 →
Door Light	194	Buy 194 →

How do the 2003 Lexus IS300's bulbs compare to other years?

The 2003 Lexus IS300 uses the same bulbs as the 2002 model.

The 2004 model continues with the same bulb sizes.

This bulb configuration covers the 2002–2005 model years. ← 2002 2004 →

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Other IS300 Years

2022 2021 2019 2018 2017 2016 2005 2004 2002 2001

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