Lincoln MKX Turn Signal Bulb Size

Lincoln MKX front turn signal bulbs use 7440NA, 7443NA, or 7444NA sizes, while rear turn signal bulbs use 4157 size. The replacement chart covers 2007 through 2018 model years with corresponding bulb size specifications.

The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.

Front Turn Signal

YearsBulb Size
2017-20187440NA (With Auto-Leveling HID H/ L)
7443NA (With HID Headlamps)
20167440NA (With Auto-Leveling HID H/ L)
7444NA (With HID Headlamps)
2014-20153457NA
20133357NA
2011-20123457NA
2007-20103157NA

Rear Turn Signal

YearsBulb Size
2007-20104157

Bulb Specifications

Description Bulb Size
ANSI standard (US & Canada). Single-filament wedge bulb (T20), natural amber glass. 12V, 21W.7440NA
ANSI standard (US & Canada). Dual-filament wedge bulb (T20), natural amber glass. 12V, 21W/5W.7443NA
ANSI standard (US & Canada). Dual-filament wedge bulb (T20), natural amber glass. 12V, 21W/5W.7444NA
ANSI standard (US & Canada). Dual-filament wedge bulb (T25), natural amber glass. 12V, 27W/7W.3457NA
ANSI standard (US & Canada). Single-filament wedge bulb (T25), natural amber glass. 12V, 27W.3357NA
ANSI standard (US & Canada). Dual-filament wedge bulb (T25), natural amber glass. 12V, 27W/7W.3157NA
ANSI standard (US & Canada). Dual-filament wedge bulb (T25). 12V, 27W/7W.4157

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