What Size Bulbs Does a 2006 Lincoln Mark LT 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 2006 Lincoln Mark LT Have?
The 2006 Lincoln Mark LT features an extensive lighting system with 13 bulb positions. It uses halogen technology with a single H13 LED dual-filament bulb handling both low and high beams. The Mark LT has been available from 2006 to 2008, and the 2006 model falls in the early-generation years.
Can You Put LED Bulbs in a 2006 Lincoln Mark LT?
Upgrading the 2006 Lincoln Mark LT to LED headlights is straightforward since it uses a single H13 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 H13 LED LED kit that specifically supports dual-filament operation to ensure both beams work correctly. For the fog lights, a 9140 LED LED bulb provides a clean white output that pairs well with LED headlights.
How to Replace Bulbs on a 2006 Lincoln Mark LT
The H13 bulb uses a twist-lock base with a keyed tab for alignment. To remove the old bulb, disconnect the wiring harness first, then twist the bulb counter-clockwise and pull it out. Older model years like the 2006 Mark LT 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 9140 LED fog light socket.
Full Upgrade Bundle
Upgrade All 13 Positions at Once
2006 Lincoln Mark LT Complete Bulb Size Chart
| Position | Bulb Size | Shop |
|---|---|---|
Low Beam | H13 LED | Buy H13 LED |
High Beam | H13 LED | Buy H13 LED |
Fog Light | 9140 LED | Buy 9140 LED |
Brake Light | 921 LED | Buy 921 LED |
Side Marker | 194 LED | Buy 194 LED |
Turn Signal Front | 3157NA LED | Buy 3157NA LED |
Turn Signal Rear | 3457K LED | Buy 3457K LED |
Dome Light | 578 | Buy 578 |
License Plate | 194 | Buy 194 |
Map Light | 906 | Buy 906 |
Parking Light | 3157NA | Buy 3157NA |
Reverse Light | 3156K | Buy 3156K |
Trunk Light | 921 | Buy 921 |
Want to upgrade everything at once?
Shop Complete LED Kit for 2006 Lincoln Mark LTHow Long Do 2006 Lincoln Mark LT Headlight Bulbs Last?
Standard halogen headlights on the 2006 Lincoln Mark LT 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 20 years old, the original bulbs on your Mark LT 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 2006 Lincoln Mark LT?
The H13 low beam bulb on the 2006 Lincoln Mark LT is cross-compatible with 9008 bulbs. These share the same physical base and electrical connection, so they will fit the socket. However, H13 is the recommended size because it is optimized for the wattage and beam pattern designed into your headlight housing. The H13 is a dual-filament bulb, meaning one bulb contains two separate filaments for low and high beams. This is a different design from single-filament bulbs like H11 or 9005. Make sure any LED replacement is specifically designed for dual-filament operation. 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.
2006 Lincoln Mark LT Headlight FAQ
Did Lincoln Mark LT Bulb Sizes Change Over the Years?
The Lincoln Mark LT has maintained consistent bulb sizes across all model years from 2006 to 2008. The low beam has used a H13 LED bulb throughout, which means replacement parts and LED upgrade kits are widely available and well-tested for this model. If you find a deal on bulbs for any Mark LT year in this range, they will fit your 2006 model.
Other Mark LT Years
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Other Vehicles That Use H13 LED Bulbs
These vehicles from other makes also use a H13 LED low beam bulb: