The Mercedes-Benz CLK55 AMG parking light utilizes 12961 and H6W bulb sizes for the specific lighting components. Data for the specified vehicle covers the period from 2001 through 2006.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Mercedes-Benz CLK55 AMG uses two distinct front parking light bulb types across its production years, with the H6W fitted to 2001-2002 models and the 12961 fitted to 2003-2006 models.
The H6W is an ECE-standard bulb, meaning it conforms to European and international regulations for signalling applications. It operates at 12V and draws 6W.
The H6W uses a BAX9s base, which is an offset pin cap design. This base type is not interchangeable with standard bayonet or wedge fittings.
The 12961 is a Philips part number designation for a T10 miniature wedge bulb. It operates at 12V and draws 5W, making it slightly lower in wattage than the H6W.
The 12961 uses a W2.1x9.5d wedge base, which is the standard base type for T10 miniature bulbs commonly found in parking and interior lighting applications.
Because the H6W and 12961 use entirely different base types, BAX9s and W2.1x9.5d respectively, the two bulbs are not interchangeable with each other.
The wattage difference between the two bulbs, 6W for the H6W and 5W for the 12961, reflects a change in the electrical specification of the front parking light circuit between the 2002 and 2003 model years.