What Size Bulbs Does a 1984 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 1984 Isuzu Pickup Have?
The 1984 Isuzu Pickup features an extensive lighting system with 11 bulb positions. It uses halogen technology with H6054 LED low beams and 158 high beams in a dual-bulb configuration. The Pickup has been available from 1981 to 1995, and the 1984 model falls in the early-generation years.
Can You Put LED Bulbs in a 1984 Isuzu Pickup?
To upgrade the 1984 Isuzu Pickup headlights to LED, you will need a H6054 LED LED kit for the low beams and a 158 LED kit for the high beams. Start with the low beams since they are used most often and have the biggest impact on nighttime visibility. For the fog lights, a LED Fog Light LED bulb provides a clean white output that pairs well with LED headlights.
How to Replace Bulbs on a 1984 Isuzu Pickup
To remove the headlight bulb, disconnect the wiring harness, then twist the bulb counter-clockwise and pull it straight out of the housing. Older model years like the 1984 Pickup typically offer easy access to the headlight bulbs from behind the headlight assembly under the hood. Most owners can complete the swap in under 10 minutes per side. When installing the new bulb, avoid touching the glass with bare fingers. Skin oils create hot spots that shorten bulb life. Wear clean gloves or handle the bulb by its plastic base only. The fog lights are accessed from underneath the front bumper. You may need to remove a few plastic clips or screws from the fender liner to reach the LED Fog Light fog light socket.
Full Upgrade Bundle
Upgrade All 11 Positions at Once
1984 Isuzu Pickup Complete Bulb Size Chart
| Position | Bulb Size | Shop |
|---|---|---|
Low Beam | H6054 LED | Buy H6054 LED |
High Beam | 158 | Buy 158 |
Fog Light | LED Fog Light | Buy LED Fog Light |
Brake Light | 168 LED | Buy 168 LED |
Side Marker | 194 LED | Buy 194 LED |
Turn Signal Front | 1157 LED | Buy 1157 LED |
Turn Signal Rear | 1073 LED | Buy 1073 LED |
Reverse Light | 1073 | Buy 1073 |
License Plate | 168 | Buy 168 |
Parking Light | 1157 | Buy 1157 |
Trunk Light | LED Light | Buy LED Light |
Want to upgrade everything at once?
Shop Complete LED Kit for 1984 Isuzu PickupHow Long Do 1984 Isuzu Pickup Headlight Bulbs Last?
Standard halogen headlights on the 1984 Isuzu Pickup have an expected lifespan of 500 to 1,000 hours, which works out to roughly 2 to 3 years of normal use. Signs of a failing halogen bulb include noticeably dimmer output, a yellowish tint compared to the other headlight, or intermittent flickering. At 42 years old, the original bulbs on your Pickup are likely overdue for replacement. Even if they still illuminate, reduced brightness significantly impacts nighttime safety. When one headlight burns out, replace both sides at the same time. Bulbs from the same batch age at similar rates, and mismatched brightness is distracting to oncoming drivers.
What Bulbs Are Compatible with the 1984 Isuzu Pickup?
The H6054 low beam bulb on the 1984 Isuzu Pickup is a specific fitment. There are no widely recognized cross-compatible alternatives, so make sure to purchase the exact H6054 size. Using the wrong bulb size can cause improper beam patterns that reduce your visibility and blind other drivers. It can also cause overheating inside the headlight housing, potentially warping the plastic lens or reflector. Always verify the bulb number before purchasing.
1984 Isuzu Pickup Headlight FAQ
Did Isuzu Pickup Bulb Sizes Change Over the Years?
Over its production run from 1981 to 1995, the Isuzu Pickup has seen bulb size changes in the Low Beam, High Beam and Brake Light positions. The 1984 model uses the earlier bulb specification that was in place before the change around 1994. Always verify the exact bulb size for your specific 1984 model year using the chart above, as using the wrong size can result in poor fitment or reduced light output.
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Other Vehicles That Use H6054 LED Bulbs
These vehicles from other makes also use a H6054 LED low beam bulb: