Ford Focus Door Mirror Illumination Light Bulb Size

The Ford Focus door mirror illumination light bulb uses a 12961 size for this component. The replacement chart covers vehicle production spanning 2012 to 2018.

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

Bulb Size by Year Range

Years	Bulb Type	Shop
2012-2018	12961	Check Price

Bulb Specifications

Description	Type	Shop
Philips part number. Miniature wedge bulb (T10) with W2.1x9.5d base. 12V, 5W.	12961	Check Price

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Additional Notes

The Ford Focus (2012-2018) uses the 12961 bulb for door mirror illumination across all listed model years.
The 12961 is a Philips part number designating a miniature wedge bulb in the T10 form factor.
T10 bulbs are small, wedge-shaped lamps commonly used in low-intensity automotive lighting positions such as courtesy lights and mirror illumination.
The 12961 bulb uses a W2.1x9.5d base, which is the standard wedge base type for T10 lamps, held in place by friction rather than a locking twist mechanism.
The bulb operates at 12 volts and draws 5 watts, placing it in the low-wattage range typical of interior and accent lighting applications.
Because the W2.1x9.5d base relies on a friction fit, physical tolerances in the socket can affect retention, making exact base compatibility a relevant factor when sourcing a replacement.