Buick Encore Map Light Bulb Size

The Buick Encore map light requires a bulb size of 12961 for proper installation and function within the interior overhead lighting assembly. Available data for the specified component covers a range from 2013 to 2021.

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
2013-2021	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 Buick Encore map light uses the 12961 bulb across all listed model years, spanning 2013-2021.
The 12961 is a Philips part number designating a miniature wedge bulb in the T10 form factor, which is one of the most widely used bulb types in automotive interior lighting applications.
The T10 designation refers to the tubular glass envelope, with the W2.1x9.5d base describing a wedge-style connection that relies on direct contact with the socket rather than a separate metal cap or pins.
The bulb operates at 12 volts and 5 watts, a standard low-wattage rating typical of interior courtesy and map lighting circuits in passenger vehicles.
The W2.1x9.5d base type is not universal among T10-sized bulbs, and substitutions using physically similar bulbs with differing base configurations may not seat correctly in the Buick Encore map light socket.