The Mercury Milan side marker requires bulb size 194, 168NA, 12961, or 168 depending on the specific application. Available data covers the range from 2006 to 2011.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Mercury Milan uses T10 miniature wedge bulbs across all front side marker positions for the 2006-2011 model years, making the T10 the sole bulb form factor in these specifications.
The 168 and 194 are both T10 wedge bulbs operating at 12V, yet they differ in wattage. The 168 draws 4.9W while the 194 draws 3.78W, meaning the two are not wattage-equivalent despite sharing the same physical base type.
The 168NA is a natural amber glass variant of the standard 168 bulb. Both share the T10 form factor and identical 12V, 4.9W ratings, with the amber tint built into the glass rather than applied through a lens or housing.
For the Mercury Milan, the front side marker bulb specification splits by headlamp type in 2010-2011. Vehicles equipped with HID headlamps use the 168NA, while those with halogen headlamps use the 194.
The headlamp-dependent split in front side marker bulb sizing applies only to the 2010-2011 model years. The 2006-2009 Milan specifies the 168 for the front side marker regardless of headlamp configuration.
The outside mirror side marker position uses the 168 bulb uniformly across all six model years covered, from 2006 through 2011, with no conditional variants based on trim or headlamp type.
Because the 168NA and the standard 168 share the same T10 base and identical electrical ratings, the physical fitment is the same. The distinction between them is the amber glass of the 168NA, which affects light color output rather than socket compatibility.
All three bulb sizes listed, the 168NA, 194, and 168, conform to ANSI standards applicable in both the United States and Canada, indicating a standardized specification rather than a region-specific one.