What Size Bulbs Does a 1991 Nissan Pathfinder 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 Nissan Pathfinder Have?
The 1991 Nissan Pathfinder features an extensive lighting system with 12 bulb positions. It uses halogen technology with a single 9004 LED dual-filament bulb handling both low and high beams. The Pathfinder has been available from 1990 to 2019, and the 1991 model falls in the early-generation years.
Can You Put LED Bulbs in a 1991 Nissan Pathfinder?
Upgrading the 1991 Nissan Pathfinder to LED headlights is straightforward since it uses a single 9004 LED dual-filament bulb for both low and high beams. You only need one pair of LED bulbs to upgrade both functions. Look for a 9004 LED LED kit that specifically supports dual-filament operation to ensure both beams work correctly. 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 1991 Nissan Pathfinder
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 1991 Pathfinder 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 12 Positions at Once
1991 Nissan Pathfinder Complete Bulb Size Chart
| Position | Bulb Size | Shop |
|---|---|---|
Low Beam | 9004 LED | Buy 9004 LED |
High Beam | 9004 LED | Buy 9004 LED |
Fog Light | LED Fog Light | Buy LED Fog Light |
Brake Light | LED Brake Light Assembly | Buy LED Brake Light Assembly |
Side Marker | 1157 LED | Buy 1157 LED |
Turn Signal Front | 1156 LED | Buy 1156 LED |
Turn Signal Rear | 1156 LED | Buy 1156 LED |
Dome Light | DE3175 | Buy DE3175 |
License Plate | 194 | Buy 194 |
Parking Light | 194 | Buy 194 |
Reverse Light | 1156 | Buy 1156 |
Trunk Light | DE3175 | Buy DE3175 |
Want to upgrade everything at once?
Shop Complete LED Kit for 1991 Nissan PathfinderHow Long Do 1991 Nissan Pathfinder Headlight Bulbs Last?
Standard halogen headlights on the 1991 Nissan Pathfinder 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 35 years old, the original bulbs on your Pathfinder 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 1991 Nissan Pathfinder?
The 9004 low beam bulb on the 1991 Nissan Pathfinder is a specific fitment. There are no widely recognized cross-compatible alternatives, so make sure to purchase the exact 9004 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.
1991 Nissan Pathfinder Headlight FAQ
Did Nissan Pathfinder Bulb Sizes Change Over the Years?
Over its production run from 1990 to 2019, the Nissan Pathfinder has seen bulb size changes in the Low Beam, High Beam and Fog Light positions. The 1991 model uses the earlier bulb specification that was in place before the change around 2017. Always verify the exact bulb size for your specific 1991 model year using the chart above, as using the wrong size can result in poor fitment or reduced light output.
Other Pathfinder Years
More from Nissan
Other Vehicles That Use 9004 LED Bulbs
These vehicles from other makes also use a 9004 LED low beam bulb: