The Mercedes-Benz C32 AMG front fog light requires a 9006 bulb size while the rear fog light uses a P21W bulb size. The replacement chart covers 2002 to 2004 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 C32 AMG uses the 9006 bulb for the front fog light position across the 2002-2004 model years.
The 9006 is an ANSI-standard halogen bulb operating at 12V and 55W, fitted with a P22d base and a single filament.
The P22d base on the 9006 is a wedge-style locking connector, which physically distinguishes it from bayonet-style bases used in other bulb types.
The rear fog light position on the C32 AMG uses the P21W bulb across the 2002-2004 model years.
The P21W is an ECE-standard single-filament signalling bulb rated at 12V and 21W, fitted with a BA15s bayonet base.
The BA15s designation on the P21W indicates a single-contact bayonet base with a 15mm collar, a format common in European and worldwide automotive lighting standards.
The front and rear fog light positions on the C32 AMG use bulbs from two different standardization systems: the 9006 follows ANSI standards applicable in the US and Canada, while the P21W follows ECE standards used in Europe and internationally.
The 9006 and P21W are not interchangeable, as they differ in base type, wattage, and governing standard, making each bulb specific to its designated position.
The wattage difference between the two bulbs is notable: the front fog light 9006 draws 55W, while the rear fog light P21W draws 21W, reflecting the distinct functional roles of forward illumination versus rear signalling.