Lincoln MKZ front turn signal bulbs use 3457NA or 3357NA sizes, while rear turn signal bulbs use 12272NA or 3157NA sizes, with each bulb size corresponding to specific vehicle applications. The replacement chart covers 2007 to 2012 model years and details bulb size specifications across the vehicle production range.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.