Mercedes-Benz E43 AMG high beam and low beam headlight bulbs use H7 size. The replacement chart covers 2017 to 2018 production years with bulb 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 a single-filament halogen type operating at 55 watts with a PX26d base, designed to fit a specific two-pin connector configuration that is not universally shared across all vehicle platforms.
The Mercedes-Benz E43 AMG uses the H7 bulb for both high beam and low beam headlight positions across the 2017-2018 model years.
The use of a single bulb type across both beam functions means the high and low beam housings each contain a dedicated H7 unit rather than relying on a dual-filament bulb to serve both purposes from a single socket.
H7 bulbs produce light through a tungsten filament enclosed in a halogen gas environment, which allows the filament to burn at a higher temperature than standard incandescent types while maintaining a compact form factor.
Because the H7 specification is shared between the high and low beam positions, the physical bulb is identical in both sockets, though the housings and aiming angles differ between the two functions.
The PX26d base on the H7 is a keyed fitting, meaning orientation during installation is fixed and the bulb cannot be seated incorrectly within a correctly matched socket.
H7 is a globally standardized bulb type defined under ECE regulations, which means aftermarket and OEM replacements from multiple manufacturers are widely available in this specification.
Halogen H7 bulbs are sensitive to contamination on the glass envelope; oils from handling can create thermal stress points that reduce service life, a characteristic inherent to the halogen bulb category.