What is the low beam headlight bulb size for a 1987 Cadillac Allante?

The 1987 Cadillac Allante uses a 9004 bulb for the low beam headlights. We recommend upgrading to LED for better visibility.

What is the high beam headlight bulb size for a 1987 Cadillac Allante?

The high beam bulb size for the 1987 Cadillac Allante is 9004.

Why are my 1987 Cadillac Allante headlights dim?

Dim headlights on a 1987 Cadillac Allante 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 conversion kit can provide a significantly brighter and whiter light output.

Which bulb fits the 1987 Cadillac Allante fog light?

The 1987 Cadillac Allante 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 1987 Cadillac Allante single or dual beam?

The 1987 Cadillac Allante 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 1987 Cadillac Allante?

Yes, the 1987 Cadillac Allante comes with standard halogen bulbs from the factory, but they can be upgraded to LED. You will need a 9004 LED conversion kit for the low beams.

How do I change the headlight on a 1987 Cadillac Allante?

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 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 1987 Cadillac Allante?

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 kit that is designed as a direct replacement and produces a proper cutoff pattern without excessive glare.

How much does it cost to replace 1987 Cadillac Allante headlights?

A pair of halogen 9004 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 1987 Cadillac Allante?

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

The 1987 Cadillac Allante has a unique bulb configuration not shared with adjacent model years.

Fitment Guaranteed for 1987 Cadillac Allante

What Size Bulbs Does a 1987 Cadillac Allante 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 1987 Cadillac Allante Have?

Owners of the 1987 Cadillac Allante will find a total of 7 lighting elements throughout the vehicle's exterior. It features a standard lighting system powered by a halogen-based setup where a single 9004 dual-filament bulb handles both low and high beam duties within the same reflector. This model belongs to the early years of the Allante's 1987-1993 production span.

Can You Put LED Bulbs in a 1987 Cadillac Allante?

Upgrading to LED is one of the most effective ways to modernize your Cadillac's appearance and safety profile. Since your Allante uses a single 9004 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.

1987 Cadillac Allante Bulb Size Chart

Position	Bulb Size	Shop
High Beam	9004	Buy 9004 →
Low Beam	9004	Buy 9004 →
Side Marker	194	Buy 194 →
License Plate	194	Buy 194 →
Reverse Light	1156	Buy 1156 →
Brake Light	892	Buy 892 →
Trunk Light	DE3175	Buy DE3175 →

How do the 1987 Cadillac Allante's bulbs compare to other years?

The 1988 model switched to a different bulb configuration.

This bulb configuration covers the 1987 model years. 1988 →

Finding the best installation guide...

Other Allante Years

1993 1992 1991 1990 1989 1988

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