The Mercedes-Benz CL600 front parking light uses a 12961 bulb size, with alternative options including 2357NA and H6W sizes. The replacement chart covers vehicle production spanning 1998 to 2014 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 CL600 front parking light position uses three distinct bulb types across its model years: the 12961, the 2357NA, and the H6W, each from a different standardization system.
The 12961 is a Philips part number designation for a miniature wedge bulb in the T10 form factor, fitted with a W2.1x9.5d base and rated at 12V and 5W. It is a single-filament, low-wattage bulb suited to parking light applications.
The 12961 bulb is specified for the CL600 front parking light across the 2003-2004 and 2006-2014 model years, making it the most consistently used bulb type in these specifications.
The 2357NA follows the ANSI standard used in the United States and Canada. It is a dual-filament bulb with a BAY15d bayonet base, natural amber-tinted glass, and rated at 12V with filaments drawing 26.9W and 8W respectively.
The H6W follows the ECE standard, which governs lighting regulations across Europe and many other markets worldwide. It is a single-filament signalling bulb with a BAX9s base, rated at 12V and 6W.
The BAY15d base of the 2357NA and the BAX9s base of the H6W are physically incompatible with each other and with the W2.1x9.5d wedge base of the 12961. These three bulbs are not interchangeable without a socket adapter or wiring modification.
The 2357NA is specified for the 1998-1999 and 2005 model years of the CL600 front parking light. Its dual-filament design and significantly higher wattage on the primary filament distinguish it from the other two bulb types listed in these specifications.
The H6W is specified for the 2001-2002 model years. At 6W, it is the lowest-wattage bulb among the three types listed, and its BAX9s base uses offset pins to ensure correct polarity orientation during installation.
The natural amber glass of the 2357NA produces a yellow-tinted output without the use of a colored lens, which is a characteristic associated with certain regional lighting regulations for turn and parking signals.
The shift from the H6W in 2001-2002 to the 12961 in 2003-2004 represents a change in both base type and wattage, meaning sockets from those earlier model years are not directly compatible with the later wedge-base specification.