Audi SQ5 Sportback Side Marker Bulb Size

The Audi SQ5 Sportback side marker requires a bulb size of 12961 for proper installation and function. Data for the specified lighting component covers the range from 2021 to 2024.

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
2023-2024	12961
2021	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 miniature wedge bulb in the T10 form factor, fitted with a W2.1x9.5d base. It operates at 12 volts and draws 5 watts, placing it in the low-wattage category typical of side marker applications.
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. This base type is not interchangeable with bayonet or festoon sockets.
The Audi SQ5 Sportback uses the 12961 bulb for its side marker position across the 2021 and 2023-2024 model years.
The T10 designation refers to the bulb's body width of 10 millimeters, a standardized sizing classification used across many automotive lighting positions. Multiple manufacturers produce T10-compatible bulbs, though the 12961 is the Philips-specific part number for this specification.
Because the socket requires a W2.1x9.5d base, substituting a T10 bulb with a different base type would result in an incompatible fit, even if the outer body width is similar.