The Mercedes-Benz S55 AMG parking light requires a 12961 bulb size for the specific lighting component located on the exterior of the vehicle. Data for the bulb specifications covers the range from 2001 to 2006.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Mercedes-Benz S55 AMG uses the 12961 bulb for the front parking light across the 2001-2006 model years.
The 12961 is a Philips part number designating a miniature wedge bulb in the T10 form factor.
T10 refers to a tubular bulb with a nominal width of 10 thirty-seconds of an inch, a common sizing convention in miniature automotive lighting.
The 12961 bulb uses a W2.1x9.5d base, which is the standard wedge-type base where the electrical contacts are made through the glass pinch at the bottom of the bulb rather than through metal pins or a bayonet fitting.
The bulb operates at 12 volts and 5 watts, consistent with low-current parking light applications in passenger vehicles.
Because the W2.1x9.5d base is a wedge type, the bulb is inserted by pressing it directly into a friction-fit socket rather than twisting it into place.
The T10 wedge format is widely used across many vehicle makes and models, though fitment in a specific housing depends on socket compatibility with the W2.1x9.5d base specification.
The 12961 bulb size is consistent across all listed model years of the S55 AMG, indicating no change in the front parking light socket specification within the 2001-2006 production run.