The Suzuki SX4 side marker requires a bulb size of 12961 for proper installation and function. Data for the specific component covers the range from 2007 through 2013.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The 12961 is a Philips part number designating a miniature wedge bulb in the T10 form factor with a W2.1x9.5d base, rated at 12 volts and 5 watts.
The T10 designation refers to the bulb's tubular shape, with the number indicating its width in eighths of an inch, making it one of the most common miniature bulb formats in automotive lighting applications.
The W2.1x9.5d base type is a wedge-style base, meaning the bulb is held in its socket by the tension of the base itself rather than by a bayonet or screw mechanism.
The Suzuki SX4 uses the 12961 bulb for both the front and rear side marker positions in the 2007 and 2013 model years.
The shared bulb specification across both the front and rear side marker positions means a single bulb type serves all four side marker sockets on the vehicle.