The Subaru BRZ side marker utilizes bulb size 12961 or 194 depending on the specific version required for the vehicle. Data for the bulb sizes covers the range from 2017 to 2023.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Subaru BRZ uses two distinct bulb sizes across its side marker positions: the 194 for the front and the 168 for the rear.
Both the 194 and 168 bulbs are ANSI-standardized types recognized in the United States and Canada, and both follow the T10 miniature wedge form factor.
The T10 wedge base is a capless design where the glass envelope itself acts as the retention mechanism, seating directly into a wedge-style socket without requiring a bayonet or screw connection.
Although the 194 and 168 share the same T10 wedge base, they are not interchangeable due to differing wattage ratings: the 194 operates at 3.78W while the 168 operates at 4.9W.
Both bulb types operate on a 12V circuit, consistent with standard automotive electrical systems.
The front side marker position on the Subaru BRZ uses the 194 bulb across all listed model years, spanning 2013-2020.
The rear side marker position uses the 168 bulb, with fitment data covering model years 2013-2016.
The higher wattage of the 168 bulb relative to the 194 means the rear side marker draws more current from the vehicle's electrical circuit than the front side marker does.