What is the low beam headlight bulb size for a 1991 Chevrolet Caprice?

The 1991 Chevrolet Caprice 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 1991 Chevrolet Caprice?

The high beam bulb size for the 1991 Chevrolet Caprice is 73.

Why are my 1991 Chevrolet Caprice headlights dim?

Dim headlights on a 1991 Chevrolet Caprice 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 1991 Chevrolet Caprice fog light?

The 1991 Chevrolet Caprice uses a LED Fog Light bulb for the fog light position.

Is the 1991 Chevrolet Caprice single or dual beam?

The 1991 Chevrolet Caprice uses a dual bulb headlight system. This means you have separate bulbs for high and low beams.

Can I install LED bulbs on my 1991 Chevrolet Caprice?

Yes, the 1991 Chevrolet Caprice 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 1991 Chevrolet Caprice have fog lights?

Yes, the 1991 Chevrolet Caprice takes a LED Fog Light bulb for the fog light position.

Did the 1991 Chevrolet Caprice change headlight bulb sizes from the previous year?

Yes — the 1991 Chevrolet Caprice uses different bulb sizes than the 1990 model. The 1991 generation introduced this bulb configuration.

Is the 1991 Chevrolet Caprice the first or last year to use 9004 LED bulbs?

The 1991 Chevrolet Caprice is the only year in the 1991 generation to use the 9004 LED bulb for the low beam headlight.

How do I change the headlight on a 1991 Chevrolet Caprice?

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 1991 Chevrolet Caprice?

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 1991 Chevrolet Caprice 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 1991 Chevrolet Caprice?

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 1991 Chevrolet Caprice has a unique bulb configuration not shared with adjacent model years.

Fitment Guaranteed for 1991 Chevrolet Caprice

What Size Bulbs Does a 1991 Chevrolet Caprice 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 1991 Chevrolet Caprice Have?

When it comes to nighttime visibility, the 1991 Chevrolet Caprice relies on an arrangement of 13 specialized bulbs. It features an extensive lighting system powered by a dual-bulb halogen configuration using separate 9004 LED low beam and 73 high beam bulbs for precise light distribution. This model belongs to the mid years of the Caprice's 1966-2017 production span.

Can You Put LED Bulbs in a 1991 Chevrolet Caprice?

For a Chevrolet built for the road and trail, LED upgrades provide the high-contrast lighting needed for better obstacle detection. We recommend starting your upgrade with the 9004 LED low beams, as they see the most use. Adding a matching 73 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.

1991 Chevrolet Caprice Bulb Size Chart

Position	Bulb Size	Shop
Low Beam	9004 LED	Buy 9004 LED →
High Beam	73	Buy 73 →
Fog Light	LED Fog Light	Buy LED Fog Light →
Brake Light	PC161	Buy PC161 →
Side Marker	194 LED	Buy 194 LED →
Turn Signal Front	3057NA LED	Buy 3057NA LED →
Turn Signal Rear	2057 LED	Buy 2057 LED →
Reverse Light	2057	Buy 2057 →
Dome Light	561 or 192	Buy 561 or 192 →
License Plate	194 or 24	Buy 194 or 24 →
Map Light	192	Buy 192 →
Parking Light	3057NA	Buy 3057NA →
Trunk Light	1003	Buy 1003 →

How do the 1991 Chevrolet Caprice's bulbs compare to other years?

The 1991 Chevrolet Caprice changed bulb sizes from 1990. The previous model year used a different configuration.

The 1992 model switched to a different bulb configuration.

This bulb configuration covers the 1991 model years. ← 1990 1992 →

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Other Caprice Years

2017 2016 2015 2014 2013 2012 2011 1996 1995 1994 1993 1992 1990 1989 1988 1987 1986 1985 1984 1983 1981 1980 1979 1978 1977 1976 1975 1973 1971 1970 1969 1968 1967 1966

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