The Mercedes-Benz CL600 front fog light utilizes H7, H11, and 9006 bulb sizes, while the rear fog light requires a P21/4W bulb size. The replacement chart covers 1998 to 2010 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 CL600 front fog light specification shows three distinct bulb types across its model years, reflecting changes in the vehicle's lighting design over time.
The H7 bulb is specified for the CL600 front fog light in 2008-2010. It is a single-filament halogen bulb operating at 12V and 55W, fitted with a PX26d base, and holds ECE certification with additional approval in the US and Japan.
The 9006 bulb is specified for the front fog light in 2001-2006. It follows the ANSI standard applicable to the US and Canada, uses a P22d base, and operates at 12V and 55W with a single filament.
The H3 bulb is specified for the front fog light in 1998-1999. It is a single-filament halogen bulb with a PK22s base, rated at 12V and 55W, and carries ECE certification with approval also extended to the US and Japan.
The 2007 CL600 front fog light uses the H11 bulb, which differs from both the H7 used in later years and the 9006 used in earlier years. The H11 features a PGJ19-2 base and operates at 12V and 55W under ECE standards, with US approval as well.
The H7, H11, H3, and 9006 bulbs all share the same 12V, 55W electrical rating, yet each uses a physically distinct base type, meaning they are not interchangeable with one another despite identical wattage.
The 9006 follows an ANSI standard, while the H7, H11, and H3 follow ECE standards. This distinction reflects different regulatory frameworks and does not indicate a difference in filament count or wattage among these front fog bulbs.
The rear fog light on the CL600 uses the P21/4W bulb for 1998-1999 and 2001-2006. Unlike all front fog bulbs in this specification, the P21/4W is a dual-filament signalling bulb, rated at 12V with a 21W and 4W filament configuration.
The P21/4W uses a BAZ15d bayonet base, which is an offset-pin design. This base prevents the bulb from being seated incorrectly, a feature associated with dual-filament bulbs where polarity and filament position are functionally significant.
The front fog light specification for the CL600 shows that the 9006 and H7 are not interchangeable, as the 9006 uses a P22d base while the H7 uses a PX26d base, despite both being single-filament halogen bulbs at the same voltage and wattage.