What is the low beam headlight bulb size for a 2002 Toyota 4Runner?

The 2002 Toyota 4Runner uses a H4 bulb for the low beam headlights. We recommend upgrading to LED for better visibility.

What is the high beam headlight bulb size for a 2002 Toyota 4Runner?

The high beam bulb size for the 2002 Toyota 4Runner is N/A.

Why are my 2002 Toyota 4Runner headlights dim?

Dim headlights on a 2002 Toyota 4Runner can be caused by aging halogen bulbs, which lose brightness over time, or oxidation (cloudiness) on the plastic headlight lenses. Upgrading to a H4 LED conversion kit can provide a significantly brighter and whiter light output.

Which bulb fits the 2002 Toyota 4Runner fog light?

The 2002 Toyota 4Runner typically does not come with factory fog lights in all trim levels. If your vehicle is equipped with them, check the manual as sizes can vary by trim.

Is the 2002 Toyota 4Runner single or dual beam?

The 2002 Toyota 4Runner uses a dual bulb headlight system. This means you have separate bulbs for high and low beams.

Can I install LED bulbs on my 2002 Toyota 4Runner?

Yes, the 2002 Toyota 4Runner comes with standard halogen bulbs from the factory, but they can be upgraded to LED. You will need a H4 LED conversion kit for the low beams.

Did the 2002 Toyota 4Runner change headlight bulb sizes from the previous year?

Yes — the 2002 Toyota 4Runner uses different bulb sizes than the 2001 model. The 2002 generation introduced this bulb configuration.

Is the 2002 Toyota 4Runner the first or last year to use H4 bulbs?

The 2002 Toyota 4Runner is the only year in the 2002 generation to use the H4 bulb for the low beam headlight.

How do I change the headlight on a 2002 Toyota 4Runner?

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 H4 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 2002 Toyota 4Runner?

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 H4 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 2002 Toyota 4Runner headlights?

A pair of halogen H4 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 2002 Toyota 4Runner?

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 H4 position are available as direct plug-and-play replacements.

The 2002 Toyota 4Runner has a unique bulb configuration not shared with adjacent model years.

Fitment Guaranteed for 2002 Toyota 4Runner

What Size Bulbs Does a 2002 Toyota 4Runner 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 2002 Toyota 4Runner Have?

Lighting on the 2002 Toyota 4Runner is managed by a total of 11 bulbs, covering everything from primary headlights to signal indicators. It features an extensive lighting system powered by a dual-bulb halogen configuration using separate H4 low beam and high beam bulbs for precise light distribution. This model belongs to the mid years of the 4Runner's 1984-2023 production span.

Can You Put LED Bulbs in a 2002 Toyota 4Runner?

For a Toyota built for the road and trail, LED upgrades provide the high-contrast lighting needed for better obstacle detection. We recommend starting your upgrade with the H4 low beams, as they see the most use. Adding a matching LED kit later will complete the look and ensure consistent lighting performance.

2002 Toyota 4Runner Bulb Size Chart

Position	Bulb Size	Shop
Turn Signal Front	7440	Buy 7440 →
Low Beam	H4	Buy H4 →
Side Marker	W5W	Buy W5W →
Brake Light	7443CK	Buy 7443CK →
Tail Light	7443CK	Buy 7443CK →
Turn Signal Rear	7440NA	Buy 7440NA →
Parking Light	W5W	Buy W5W →
Reverse Light	921	Buy 921 →
License Plate	W5W	Buy W5W →
Map Light	DE3175	Buy DE3175 →
Dome Light	DE3175	Buy DE3175 →