Mercedes-Benz CL55 AMG front side marker bulb uses size 12961 while rear side marker bulb uses size 67. Replacement chart covers 2001 to 2006 production years with corresponding bulb size specifications.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Mercedes-Benz CL55 AMG uses two distinct bulb types across its side marker positions: the 12961 for front applications and the 67 for rear applications.
The 12961 is a Philips part number designation for a miniature wedge bulb in the T10 form factor, operating at 12V and 5W with a W2.1x9.5d base.
The T10 wedge base on the 12961 is a friction-fit design, meaning the bulb is held in place by tension rather than a locking mechanism, which is a common trait of low-wattage marker and courtesy bulbs.
The front side marker position on the CL55 AMG uses the 12961 bulb across the 2001-2006 model years.
The 67 is an ANSI-standardized bulb used in the United States and Canada, rated at 12V and 8W, and fitted with a BA15s single-contact bayonet base.
The BA15s base on the 67 bulb uses a twist-and-lock retention method, which is mechanically distinct from the wedge base on the 12961, making the two bulb types non-interchangeable despite both being low-wattage marker bulbs.
The 67 is described as a lower wattage variant of the 1156, sharing the same BA15s bayonet base but drawing less power, which means a 1156 is not a direct drop-in replacement for the 67 in wattage-sensitive circuits.
The rear side marker position on the Mercedes-Benz CL55 AMG is specified for the 2001-2002 model years using the 67 bulb.
The front side marker draws 5W through the 12961, while the rear side marker draws 8W through the 67, reflecting a difference in output between the two positions on the same vehicle.