Buick Enclave front side marker bulb size 12961 and rear side marker bulb size 194 are specified in the replacement chart. The chart covers vehicle production years from 2008 to 2018 with corresponding bulb specifications.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Buick Enclave uses two distinct bulb types across its side marker positions: the 12961 for the front and the 194 for the rear.
Both the 12961 and 194 are T10 miniature wedge bulbs, meaning they share the same general form factor and are inserted without a twist or bayonet motion.
The 12961 is a Philips part number rather than an ANSI industry standard designation, and it carries a W2.1x9.5d base specification at 12V and 5W.
The 194 is an ANSI standard designation recognized across the United States and Canada, rated at 12V and 3.78W.
Although both bulbs are T10 wedge types, the 12961 draws 5W while the 194 draws 3.78W, meaning the two are not electrically identical and are not interchangeable without accounting for that wattage difference.
The front side marker position on the Buick Enclave uses the 12961 for model years 2013-2018.
The rear side marker position uses the 194 across model years 2008-2018, a span that extends further back than the front side marker data.
The rear side marker specification for the 194 remains unchanged across all eleven model years listed, indicating a consistent fitment throughout that production period.
The W2.1x9.5d base designation on the 12961 refers to a wedge base with a 2.1mm wire width and a 9.5mm insertion depth, which defines the physical interface between the bulb and its socket.
Because the 12961 is identified by a manufacturer part number rather than an ANSI code, sourcing an equivalent replacement requires confirming that the substitute matches the W2.1x9.5d base, 12V rating, and 5W output.