The Mercedes-Benz E550 high beam and low beam headlight bulbs utilize H7, D1S, and D2S sizes depending on configuration and model variant. The replacement chart covers 2007 through 2017 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 H7 bulb is the most frequently specified type across the Mercedes-Benz E550 headlight data, appearing in both high beam and low beam positions across multiple model years. It is a single-filament halogen bulb operating on a standard two-pin PX26d base, rated at 55 watts and 12 volts.
The D1S bulb is the second most common type in these specifications, used in HID-equipped E550 models from 2008-2013 for both high and low beam positions. D1S is a discharge arc bulb with an integrated igniter, meaning it does not require a separate starter module and is not interchangeable with D2S, which uses an external igniter.
The 2007 low beam position is the only instance in these specifications where a D2S bulb is listed. D2S operates on the same 35-watt discharge principle as D1S but relies on an external igniter built into the ballast, making it physically and electrically incompatible with D1S sockets despite their similar appearance.
For the Mercedes-Benz E550, the 2008-2013 model years carried two distinct headlight system configurations simultaneously, one using HID technology with D1S bulbs and one using halogen capsule housings with H7 bulbs. Selecting the correct bulb type for these years depends entirely on which headlight system is installed on the specific vehicle.
From 2014-2016, the low beam specifications include the qualifier "Without Xenon headlight, Without Intelligent Light System (ILS)," indicating that H7 fitment applies only to vehicles not equipped with those systems. The high beam for the same years lists H7 without such qualifiers.
The 2017 model year lists H7 for both high and low beam positions without any conditional qualifiers, representing a straightforward single-bulb-type fitment for both functions.
H7 and D1S bulbs are not interchangeable. H7 is a halogen type requiring a reflector or projector housing designed for filament-based light sources, while D1S produces a high-intensity arc discharge and requires a housing specifically engineered for HID output and beam control.
The D1S and D2S bulbs specified across these years both operate at 35 watts but produce significantly higher luminous output than the 55-watt H7 halogen, a characteristic of high-intensity discharge technology where electrical arc excitation of xenon gas and metal halide salts generates greater light output per watt consumed.