The Mercedes-Benz SL63 AMG uses D1S bulbs for low beam headlights and either D1S or H7 bulbs for high beam headlights, with the specific bulb size varying by model configuration. The replacement chart covers 2009 to 2016 production years and details the corresponding headlight bulb specifications for each model year.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The D1S is a high-intensity discharge (HID) xenon bulb operating at 85V and 35W. Unlike conventional halogen types, it produces light through an electrical arc between tungsten electrodes within a xenon gas-filled quartz capsule, rather than through filament incandescence.
The D1S features a PK32d-2 base with an integral ignitor built directly into the bulb unit. This design means the ignitor is not a separate component, and the bulb is intended exclusively for projector-type headlight housings.
The H7 is a single-filament halogen bulb rated at 12V and 55W, fitted with a PX26d base. It carries ECE approval for use in Europe and worldwide markets, and holds additional approval for use in the United States and Japan.
For the Mercedes-Benz SL63 AMG, the low beam headlight position uses the D1S across all listed model years from 2009-2016, while the high beam position transitions from H7 in 2009-2012 to D1S in 2013-2016.
The 2013 model year marks the point at which both the high beam and low beam positions of the SL63 AMG share the same D1S bulb type, whereas earlier years use different bulb types across the two positions.
The H7 and D1S are not interchangeable. The H7 operates on a standard 12V halogen circuit, while the D1S requires a high-voltage ballast system to initiate and sustain the xenon arc at 85V. The physical bases also differ between the two types.
Both the D1S and H7 conform to ECE (Economic Commission for Europe) standards, indicating that each bulb type meets regulated requirements for light output, beam pattern, and safety in markets that follow ECE lighting regulations.