The Mercedes-Benz CLK63 AMG uses H7 bulbs for high beam headlight applications and H7 or D2S bulbs for low beam headlight functions, with the specific bulb size depending on headlight configuration. The replacement chart covers 2007 to 2008 model years and details bulb size specifications across vehicle production periods.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The H7 bulb is a single-filament halogen type operating at 12V and 55W, fitted with a PX26d base. It carries ECE certification for use in Europe and worldwide markets, and is also approved for use in the United States and Japan.
The D2S is a high-intensity discharge (HID) xenon bulb rated at 85V and 35W, using a P32d-2 base. Unlike halogen types, it requires an external ignitor to initiate and sustain the arc discharge that produces light.
The D2S bulb is designed specifically for projector-type headlamp housings, which use a lens and reflector system to control the focused output of the HID arc. It is not interchangeable with reflector-type housings intended for halogen bulbs.
For the Mercedes-Benz CLK63 AMG, the H7 bulb serves as the high beam headlight across the 2007-2008 model years.
The low beam headlight on the 2007-2008 CLK63 AMG accommodates two distinct bulb types depending on the headlamp system installed: H7 for vehicles equipped with halogen capsule headlamps, and D2S for vehicles equipped with HID headlamps.
Because the low beam position accepts either H7 or D2S depending on the headlamp variant, the installed headlamp housing type must be confirmed before selecting a replacement bulb, as the two types are not interchangeable.