The Mercedes-Benz 500E uses 9004 bulb size for both high beam and low beam headlight applications. The replacement chart covers 1992 to 1993 vehicle 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 9004 is a dual-filament halogen bulb operating at 12 volts with a high beam output of 65 watts and a low beam output of 45 watts. It uses a P29t base and conforms to ANSI standards for use in the United States and Canada.
The Mercedes-Benz 500E (1992-1993) uses the 9004 bulb for both the high beam and low beam headlight positions.
Because the 9004 serves both beam functions in the 500E, a single bulb type handles the full headlight operation on each side, with the dual-filament design switching between the two wattage levels depending on the selected beam.
The P29t base is a proprietary connector configuration specific to the 9004 family. This base type is not interchangeable with other common halogen bases such as H4, H7, or 9007, even though some of those also feature dual-filament designs.
The 9004 and 9007 bulbs share a similar physical form but have different base key positions, making them non-interchangeable despite their outward resemblance. Substituting one for the other is not possible without modification.