The Audi A7 front and rear side marker bulbs both utilize a 12961 size specification. 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.
The 12961 is a Philips miniature wedge bulb operating at 12 volts and 5 watts, built on the T10 form factor with a W2.1x9.5d base.
The W2.1x9.5d base is a wedge-type connection, meaning the bulb is held in place by tension from the socket rather than a bayonet or screw mechanism.
The Audi A7 uses the 12961 bulb across both front and rear side marker positions, making it a single bulb type for all side marker applications on the vehicle.
Front side marker positions on the Audi A7 are specified for model years 2012-2015 and 2017-2018, with the 12961 bulb applying uniformly across all listed years.
Rear side marker positions on the Audi A7 are specified for model years 2012-2018, with the 12961 bulb applying uniformly across all listed years.
The T10 designation refers to the bulb's tubular shape, with the number indicating a width of ten eighths of an inch, a standard sizing convention in miniature automotive bulbs.
At 5 watts, the 12961 is a low-output bulb consistent with side marker applications, which are indicator lamps rather than primary illumination sources.
The 12961 is interchangeable with other T10 W2.1x9.5d wedge bulbs of matching voltage and wattage, as the base type is an industry-standard fitment shared across many automotive applications.