What is the low beam headlight bulb size for a 1990 Alfa Romeo Spider Quadrifoglio?

The 1990 Alfa Romeo Spider Quadrifoglio 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 1990 Alfa Romeo Spider Quadrifoglio?

The high beam bulb size for the 1990 Alfa Romeo Spider Quadrifoglio is 9004 LED.

Why are my 1990 Alfa Romeo Spider Quadrifoglio headlights dim?

Dim headlights on a 1990 Alfa Romeo Spider Quadrifoglio 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 1990 Alfa Romeo Spider Quadrifoglio fog light?

The 1990 Alfa Romeo Spider Quadrifoglio uses a H2 LED bulb for the fog light position.

Is the 1990 Alfa Romeo Spider Quadrifoglio single or dual beam?

The 1990 Alfa Romeo Spider Quadrifoglio 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 1990 Alfa Romeo Spider Quadrifoglio?

Yes, the 1990 Alfa Romeo Spider Quadrifoglio 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 1990 Alfa Romeo Spider Quadrifoglio have fog lights?

Yes, the 1990 Alfa Romeo Spider Quadrifoglio takes a H2 LED bulb for the fog light position.

Did the 1990 Alfa Romeo Spider Quadrifoglio change headlight bulb sizes from the previous year?

No — the 1990 Alfa Romeo Spider Quadrifoglio uses the same bulb sizes as the 1989 model. This configuration has been consistent across the 1988–1990 generation.

Is the 1990 Alfa Romeo Spider Quadrifoglio the first or last year to use 9004 LED bulbs?

The 1990 Alfa Romeo Spider Quadrifoglio is the last year in the 1988–1990 generation to use the 9004 LED bulb for the low beam headlight.

How do I change the headlight on a 1990 Alfa Romeo Spider Quadrifoglio?

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 1990 Alfa Romeo Spider Quadrifoglio?

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 1990 Alfa Romeo Spider Quadrifoglio 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 1990 Alfa Romeo Spider Quadrifoglio?

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.

The 1990 Alfa-Romeo Spider Quadrifoglio is the last model year to use this bulb configuration (1988–1990).

Fitment Guaranteed for 1990 Alfa-Romeo Spider Quadrifoglio

What Size Bulbs Does a 1990 Alfa-Romeo Spider Quadrifoglio 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 1990 Alfa-Romeo Spider Quadrifoglio Have?

Owners of the 1990 Alfa-Romeo Spider Quadrifoglio will find a total of 13 lighting elements throughout the vehicle's exterior. 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.

Can You Put LED Bulbs in a 1990 Alfa-Romeo Spider Quadrifoglio?

Upgrading to LED is one of the most effective ways to modernize your Alfa-Romeo's appearance and safety profile. Since your Spider Quadrifoglio 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 H2 LED fog lights; switching these to LED can dramatically improve your visibility in adverse weather.

1990 Alfa-Romeo Spider Quadrifoglio Bulb Size Chart

Position	Bulb Size	Shop
Low Beam	9004 LED	Buy 9004 LED →
High Beam	9004 LED	Buy 9004 LED →
Fog Light	H2 LED	Buy H2 LED →
Brake Light	1156	Buy 1156 →
Dome Light	DE3423	Buy DE3423 →
Side Marker	168	Buy 168 →
Turn Signal Front	1156	Buy 1156 →
License Plate	67	Buy 67 →
Map Light	DE3175	Buy DE3175 →
Parking Light	1895 or 168 or 67	Buy 1895 or 168 or 67 →
Turn Signal Rear	1156	Buy 1156 →
Reverse Light	1156	Buy 1156 →
Trunk Light	DE3423	Buy DE3423 →

How do the 1990 Alfa-Romeo Spider Quadrifoglio's bulbs compare to other years?

The 1990 Alfa-Romeo Spider Quadrifoglio uses the same bulbs as the 1989 model.

This bulb configuration covers the 1988–1990 model years. ← 1989

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Other Spider Quadrifoglio Years

1989 1988

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