What is the low beam headlight bulb size for a 1999 Cadillac Catera?

The 1999 Cadillac Catera uses a H7 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 1999 Cadillac Catera?

The high beam bulb size for the 1999 Cadillac Catera is H7 LED.

Why are my 1999 Cadillac Catera headlights dim?

Dim headlights on a 1999 Cadillac Catera can be caused by aging halogen bulbs, which lose brightness over time, or oxidation (cloudiness) on the plastic headlight lenses. Upgrading to a H7 LED LED conversion kit can provide a significantly brighter and whiter light output.

Which bulb fits the 1999 Cadillac Catera fog light?

The 1999 Cadillac Catera uses a H3 LED bulb for the fog light position.

Is the 1999 Cadillac Catera single or dual beam?

The 1999 Cadillac Catera 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 1999 Cadillac Catera?

Yes, the 1999 Cadillac Catera comes with standard halogen bulbs from the factory, but they can be upgraded to LED. You will need a H7 LED LED conversion kit for the low beams.

Does the 1999 Cadillac Catera have fog lights?

Yes, the 1999 Cadillac Catera takes a H3 LED bulb for the fog light position.

How do I change the headlight on a 1999 Cadillac Catera?

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 H7 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 1999 Cadillac Catera?

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 H7 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 1999 Cadillac Catera headlights?

A pair of halogen H7 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 1999 Cadillac Catera?

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 H7 LED position are available as direct plug-and-play replacements.

This vehicle is part of the 1997–1999 Cadillac Catera generation. All models in this range share identical light bulb sizes.

Fitment Guaranteed for 1999 Cadillac Catera

What Size Bulbs Does a 1999 Cadillac Catera 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 1999 Cadillac Catera Have?

Owners of the 1999 Cadillac Catera 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 H7 LED dual-filament bulb handles both low and high beam duties within the same reflector. This model belongs to the mid years of the Catera's 1997-2001 production span.

Can You Put LED Bulbs in a 1999 Cadillac Catera?

Upgrading to LED is one of the most effective ways to modernize your Cadillac's appearance and safety profile. Since your Catera uses a single H7 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.

1999 Cadillac Catera Bulb Size Chart

Position	Bulb Size	Shop
Low Beam	H7 LED	Buy H7 LED →
High Beam	H7 LED	Buy H7 LED →
Fog Light	H3 LED	Buy H3 LED →
Brake Light	LED Bulb	Buy LED Bulb →
Side Marker	194 LED	Buy 194 LED →
Turn Signal Front	3357NA LED	Buy 3357NA LED →
Turn Signal Rear	12496 LED	Buy 12496 LED →
Dome Light	6411	Buy 6411 →
License Plate	6418	Buy 6418 →
Map Light	168	Buy 168 →
Parking Light	3357NA	Buy 3357NA →
Reverse Light	1156	Buy 1156 →
Trunk Light	LED Light	Buy LED Light →

Installation Guide

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Other Catera Years

2001 2000 1998 1997

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