The Buick Verano inner tail light uses 7443 or 194 bulb sizes, while the outer tail light requires 12961 or 7443 bulb sizes. The replacement chart covers 2012 to 2017 production years with corresponding bulb size specifications.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The 7443 bulb is the most frequently specified type across the Buick Verano tail light data, appearing in the outer tail light position for 2012-2016 and in the inner tail light position for 2017.
The 7443 is a dual-filament T20 wedge bulb rated at 12V with a 21W/5W output, meaning it serves two independent lighting functions, typically stop and tail, within a single housing.
The 194 bulb is specified for the inner tail light on the Buick Verano across 2012-2016. It is a miniature T10 wedge bulb rated at 12V and 3.78W, making it a low-output lamp suited for marker or indicator roles.
The 12961 is identified by a Philips part number rather than an ANSI standard designation. It is a miniature T10 wedge bulb with a W2.1x9.5d base, rated at 12V and 5W, and is specified exclusively for the 2017 outer tail light position.
Although the 194 and 12961 share the same T10 wedge form factor, they carry different wattage ratings, 3.78W and 5W respectively, and the 12961 is defined by a manufacturer part number rather than a universal ANSI code.
The 2017 Buick Verano represents a notable shift in bulb specification, with the inner tail light moving from the 194 to the 7443 and the outer tail light moving from the 7443 to the 12961, meaning neither position retains the same bulb type used in prior model years.
The T20 wedge base of the 7443 is physically larger than the T10 wedge base of the 194 and 12961, making these bulb families non-interchangeable despite all operating at 12V.