Chevrolet SS License Plate Bulb Size

The Chevrolet SS license plate light requires a 12961 bulb size for proper installation and function on the rear exterior of the vehicle. Data for 12961 bulbs covers the 2014 to 2017 range of production for the specified sedan.

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
2014-2017	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 Chevrolet SS uses the 12961 bulb for the license plate position across all documented model years, spanning 2014-2017.
The 12961 is a Philips part number designating a miniature wedge bulb in the T10 form factor, operating at 12 volts and 5 watts.
The T10 designation refers to a tubular bulb with a width of 10 millimeters, a common sizing standard in automotive miniature lighting applications.
The 12961 uses a W2.1x9.5d base, which is the standard wedge-type base found on T10 bulbs, where the electrical contacts are integrated into the plastic wedge rather than a separate metal cap.
At 5 watts, the 12961 falls within the low-wattage range typical of license plate illumination, where output requirements are modest compared to forward-facing lighting positions.
The W2.1x9.5d base specification is relevant to fitment, as wedge bases are not universally interchangeable with bayonet or festoon base types even when the outer bulb size appears similar.
The consistent use of the 12961 across the full 2014-2017 production run of the Chevrolet SS indicates a stable socket and housing specification with no mid-cycle changes to this position.