The Mercedes-Benz CL65 AMG parking light utilizes a 12961 bulb size for the lighting components. Available data for the specified vehicle covers the range from 2005 to 2014.
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, fitted with a W2.1x9.5d base and rated at 12 volts and 5 watts.
The T10 designation refers to a tubular bulb roughly 10/32 of an inch wide, commonly used in low-intensity automotive applications such as parking lights, side markers, and courtesy lighting.
The W2.1x9.5d base is a wedge-type base, meaning the bulb is held in its socket by the tension of the glass envelope itself rather than by a separate metal cap with pins.
At 5 watts, the 12961 operates as a low-power indicator bulb, consistent with its role in a parking light circuit rather than a primary illumination function.
The Mercedes-Benz CL65 AMG uses the 12961 bulb for the front parking light across the 2005-2006 and 2008-2014 model years.
The W2.1x9.5d base is a standardized wedge fitting, and physical compatibility with a given socket does not guarantee electrical or regulatory equivalence with the specified 12961 bulb.