What is the low beam headlight bulb size for a 1991 Isuzu Pickup?

The 1991 Isuzu Pickup uses a H6054 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 Isuzu Pickup?

The high beam bulb size for the 1991 Isuzu Pickup is 74.

Why are my 1991 Isuzu Pickup headlights dim?

Dim headlights on a 1991 Isuzu Pickup can be caused by aging halogen bulbs, which lose brightness over time, or oxidation (cloudiness) on the plastic headlight lenses. Upgrading to a H6054 LED LED conversion kit can provide a significantly brighter and whiter light output.

Which bulb fits the 1991 Isuzu Pickup fog light?

The 1991 Isuzu Pickup uses a LED Fog Light bulb for the fog light position.

Is the 1991 Isuzu Pickup single or dual beam?

The 1991 Isuzu Pickup 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 Isuzu Pickup?

Yes, the 1991 Isuzu Pickup comes with standard halogen bulbs from the factory, but they can be upgraded to LED. You will need a H6054 LED LED conversion kit for the low beams.

Does the 1991 Isuzu Pickup have fog lights?

Yes, the 1991 Isuzu Pickup takes a LED Fog Light bulb for the fog light position.

Did the 1991 Isuzu Pickup change headlight bulb sizes from the previous year?

No — the 1991 Isuzu Pickup uses the same bulb sizes as the 1990 model. This configuration has been consistent across the 1990–1991 generation.

Is the 1991 Isuzu Pickup the first or last year to use H6054 LED bulbs?

The 1991 Isuzu Pickup is the last year in the 1990–1991 generation to use the H6054 LED bulb for the low beam headlight.

How do I change the headlight on a 1991 Isuzu Pickup?

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 H6054 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 Isuzu Pickup?

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 H6054 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 Isuzu Pickup headlights?

A pair of halogen H6054 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 Isuzu Pickup?

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 H6054 LED position are available as direct plug-and-play replacements.

The 1991 Isuzu Pickup is the last model year to use this bulb configuration (1990–1991).

Fitment Guaranteed for 1991 Isuzu Pickup

What Size Bulbs Does a 1991 Isuzu Pickup 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 Isuzu Pickup Have?

The 1991 Isuzu Pickup utilizes a refined lighting configuration featuring 12 distinct bulb positions. It features an extensive lighting system powered by a dual-bulb halogen configuration using separate H6054 LED low beam and 74 high beam bulbs for precise light distribution. This model belongs to the mid years of the Pickup's 1981-1995 production span.

Can You Put LED Bulbs in a 1991 Isuzu Pickup?

Upgrading to LED is one of the most effective ways to modernize your Isuzu's appearance and safety profile. We recommend starting your upgrade with the H6054 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.

1991 Isuzu Pickup Bulb Size Chart

Position	Bulb Size	Shop
Low Beam	H6054 LED	Buy H6054 LED →
High Beam	74	Buy 74 →
Fog Light	LED Fog Light	Buy LED Fog Light →
Brake Light	74	Buy 74 →
Side Marker	194 LED	Buy 194 LED →
Turn Signal Front	1157 LED	Buy 1157 LED →
Turn Signal Rear	1156 LED	Buy 1156 LED →
Reverse Light	1156	Buy 1156 →
License Plate	168	Buy 168 →
Parking Light	1157	Buy 1157 →
Trunk Light	LED Light	Buy LED Light →
Tail Light	1157	Buy 1157 →

How do the 1991 Isuzu Pickup's bulbs compare to other years?

The 1991 Isuzu Pickup uses the same bulbs as the 1990 model.

The 1992 model switched to a different bulb configuration.

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

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Other Pickup Years

1995 1994 1993 1992 1990 1989 1988 1987 1986 1984 1983 1982 1981

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