What is the low beam headlight bulb size for a 1998 Buick Skylark?

The 1998 Buick Skylark 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 Buick Skylark?

The high beam bulb size for the 1998 Buick Skylark is 74.

Why are my 1998 Buick Skylark headlights dim?

Dim headlights on a 1998 Buick Skylark 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 Buick Skylark fog light?

The 1998 Buick Skylark uses a LED Fog Light bulb for the fog light position.

Is the 1998 Buick Skylark single or dual beam?

The 1998 Buick Skylark uses a dual bulb headlight system. This means you have separate bulbs for high and low beams.

Can I install LED bulbs on my 1998 Buick Skylark?

Yes, the 1998 Buick Skylark 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 Buick Skylark have fog lights?

Yes, the 1998 Buick Skylark takes a LED Fog Light bulb for the fog light position.

How do I change the headlight on a 1998 Buick Skylark?

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 Buick Skylark?

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 Buick Skylark 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 Buick Skylark?

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.

This vehicle is part of the 1997–1998 Buick Skylark generation. All models in this range share identical light bulb sizes.

Fitment Guaranteed for 1998 Buick Skylark

What Size Bulbs Does a 1998 Buick Skylark 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 Buick Skylark Have?

Lighting on the 1998 Buick Skylark is managed by a total of 13 bulbs, covering everything from primary headlights to signal indicators. It features an extensive lighting system powered by a dual-bulb halogen configuration using separate 9004 LED low beam and 74 high beam bulbs for precise light distribution. This model belongs to the late years of the Skylark's 1997-1998 production span.

Can You Put LED Bulbs in a 1998 Buick Skylark?

Upgrading to LED is one of the most effective ways to modernize your Buick's appearance and safety profile. We recommend starting your upgrade with the 9004 LED low beams, as they see the most use. Adding a matching 74 LED kit later will complete the look and ensure consistent lighting performance. Don't forget the LED Fog Light fog lights; switching these to LED can dramatically improve your visibility in adverse weather.

1998 Buick Skylark Bulb Size Chart

Position	Bulb Size	Shop
Low Beam	9004 LED	Buy 9004 LED →
High Beam	74	Buy 74 →
Fog Light	LED Fog Light	Buy LED Fog Light →
Brake Light	161	Buy 161 →
Side Marker	194 LED	Buy 194 LED →
Turn Signal Front	3457NA LED	Buy 3457NA LED →
Turn Signal Rear	3057	Buy 3057 →
Dome Light	562	Buy 562 →
License Plate	194	Buy 194 →
Map Light	168	Buy 168 →
Parking Light	3457NA	Buy 3457NA →
Reverse Light	1156	Buy 1156 →
Trunk Light	562	Buy 562 →