What is the low beam headlight bulb size for a 1998 Infiniti QX4?

The 1998 Infiniti QX4 uses a 9004 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 1998 Infiniti QX4?

The high beam bulb size for the 1998 Infiniti QX4 is 9004 LED.

Why are my 1998 Infiniti QX4 headlights dim?

Dim headlights on a 1998 Infiniti QX4 can be caused by aging halogen bulbs, which lose brightness over time, or oxidation (cloudiness) on the plastic headlight lenses. Upgrading to a 9004 LED LED conversion kit can provide a significantly brighter and whiter light output.

Which bulb fits the 1998 Infiniti QX4 fog light?

The 1998 Infiniti QX4 uses a H3 LED bulb for the fog light position.

Is the 1998 Infiniti QX4 single or dual beam?

The 1998 Infiniti QX4 uses a single bulb (dual filament) headlight system. This means one bulb controls both high and low beams.

Can I install LED bulbs on my 1998 Infiniti QX4?

Yes, the 1998 Infiniti QX4 comes with standard halogen bulbs from the factory, but they can be upgraded to LED. You will need a 9004 LED LED conversion kit for the low beams.

Does the 1998 Infiniti QX4 have fog lights?

Yes, the 1998 Infiniti QX4 takes a H3 LED bulb for the fog light position.

How do I change the headlight on a 1998 Infiniti QX4?

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 9004 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 1998 Infiniti QX4?

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 9004 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 1998 Infiniti QX4 headlights?

A pair of halogen 9004 LED 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 1998 Infiniti QX4?

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 9004 LED position are available as direct plug-and-play replacements.

Fitment Guaranteed for 1998 Infiniti QX4

What Size Bulbs Does a 1998 Infiniti QX4 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 1998 Infiniti QX4 Have?

Lighting on the 1998 Infiniti QX4 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 halogen-based setup where a single 9004 LED dual-filament bulb handles both low and high beam duties within the same reflector. This model belongs to the early years of the QX4's 1998-1999 production span.

Can You Put LED Bulbs in a 1998 Infiniti QX4?

Upgrading to LED is one of the most effective ways to modernize your Infiniti's appearance and safety profile. Since your QX4 uses a single 9004 LED bulb for both high and low beams, ensure your chosen LED kit is "dual-beam" compatible. This allows the LED circuitry to mimic the two-filament design of the original halogen bulb. Don't forget the H3 LED fog lights; switching these to LED can dramatically improve your visibility in adverse weather.

1998 Infiniti QX4 Bulb Size Chart

Position	Bulb Size	Shop
Low Beam	9004 LED	Buy 9004 LED →
High Beam	9004 LED	Buy 9004 LED →
Fog Light	H3 LED	Buy H3 LED →
Brake Light	168 LED	Buy 168 LED →
Side Marker	168 LED	Buy 168 LED →
Turn Signal Front	1156 LED	Buy 1156 LED →
Turn Signal Rear	1156 LED	Buy 1156 LED →
Reverse Light	1156	Buy 1156 →
License Plate	168	Buy 168 →
Parking Light	168	Buy 168 →
Trunk Light	LED Light	Buy LED Light →

Installation Guide

Open in YouTube →

Video suggestion: Installation GuideBy YouTube

Other QX4 Years

1999

More from Infiniti

EX35 EX37 FX35 FX37 FX45 FX50 G20 G25

Other Vehicles That Use 9004 LED Bulbs

2005 Chevrolet Venture 2003 Isuzu Rodeo Sport 2002 Dodge Ram 2500 2002 Dodge Ram 3500 2002 Isuzu Trooper 2001 Nissan Xterra