ATK GV650 License Plate Bulb Size

The ATK GV650 uses a 12961 bulb size for the license plate light assembly. The replacement chart covers vehicle production years spanning 2011 to 2014.

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
2011-2014	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 ATK GV650 uses the 12961 bulb for the license plate position across the 2011-2014 model years.
The 12961 is a Philips part number designating a miniature wedge bulb in the T10 form factor.
T10 refers to a tubular bulb with a width of 10 eighths of an inch, a common sizing convention in miniature automotive lighting.
The 12961 operates on 12 volts at 5 watts, which is standard for low-draw accessory lighting such as license plate illumination.
The bulb uses a W2.1x9.5d base, a wedge-type base where the electrical contacts are formed by the glass envelope itself rather than a separate metal cap.
The W2.1x9.5d designation indicates a wedge base with a 2.1mm wire contact width and a 9.5mm insertion depth, which determines physical socket compatibility.
Because the 12961 is a Philips-assigned part number, equivalent bulbs from other manufacturers are typically cross-referenced by their base type and electrical ratings rather than by this specific number.