Acura ILX Map Light Bulb Size

The Acura ILX map light requires a bulb size of 12961 for the interior lighting system. Data for the specific bulb requirements covers the range from 2021 to 2022.

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 Size
2021-2022	12961

Bulb Specifications

Description	Bulb Size
Philips part number. Miniature wedge bulb (T10) with W2.1x9.5d base. 12V, 5W.	12961

Other Locations

Additional Notes

The 12961 is a Philips part number designating a T10 miniature wedge bulb with a W2.1x9.5d base, rated at 12 volts and 5 watts.
The W2.1x9.5d base is a wedge-type connection, meaning the bulb is held in place by tension from the socket rather than by a bayonet or screw mechanism.
The Acura ILX uses the 12961 bulb for the map light across the 2021-2022 model years.
The T10 designation refers to the bulb's tubular form factor, with the number indicating a width of ten eighths of an inch, a standard sizing convention in miniature automotive bulbs.
At 5 watts and 12 volts, the 12961 operates at a relatively low power draw, consistent with interior courtesy and map lighting applications.