The Lincoln Mark LT high beam and low beam headlight bulbs both use a 9008 size. The replacement chart covers 2006 to 2008 vehicle production years with bulb specifications.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The 9008 bulb is the sole bulb type listed across all headlight positions for the Lincoln Mark LT, covering both high beam and low beam functions for the 2006-2008 model years.
The 9008 is a dual-filament halogen bulb, meaning a single bulb contains two separate filaments: one rated at 65W for high beam output and one rated at 55W for low beam output.
Because the 9008 handles both high and low beam functions within one unit, the Lincoln Mark LT uses a single bulb per headlight housing rather than separate bulbs for each function.
The 9008 operates on a 12V electrical system, which is standard for passenger vehicle applications in North America.
The 9008 carries an ANSI designation, indicating it conforms to standardized performance and dimensional specifications recognized in both the United States and Canada.
The bulb uses a P26t base, which is a specific bayonet-style connector type. Bulbs with differing base types are not physically compatible with the Mark LT's headlight sockets, regardless of voltage or wattage ratings.
The 9008 designation is interchangeable with the H13 designation, as both refer to the same bulb specification under different naming conventions used by various manufacturers.