The Mercedes-Benz C55 AMG uses H7 bulbs for high beam headlights and H7 or D2S bulbs for low beam headlights, with the specific bulb size varying by configuration. The replacement chart covers 2005 to 2006 model years and details the corresponding headlight bulb specifications for each production year.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Mercedes-Benz C55 AMG uses H7 bulbs across both the high beam and low beam headlight positions for the 2005-2006 model years, making it the most frequently specified bulb type in these specifications.
The H7 is a single-filament halogen bulb operating at 12V and 55W, fitted with a PX26d base. It conforms to ECE standards used in Europe and worldwide, and carries approval for use in the United States and Japan as well.
The low beam position on the C55 AMG for 2005-2006 also accommodates the D2S bulb, but only on vehicles equipped with HID headlamps. This represents a separate and distinct fitment path from the standard H7 configuration.
The D2S is a high-intensity discharge xenon bulb rated at 85V and 35W, fitted with a P32d-2 base. Unlike the H7, it does not produce light through a heated filament but instead generates an arc discharge between two electrodes.
The D2S bulb is designed specifically for projector-type housings and requires an external ignitor to initiate the arc. It is not compatible with reflector-type housings intended for halogen bulbs.
The H7 and D2S bulbs are not interchangeable. They differ in base type, operating voltage, light-generation method, and housing compatibility, meaning a vehicle fitted with one type cannot simply substitute the other without corresponding changes to the headlamp assembly and electrical system.