The Mercedes-Benz 300E uses 9004 bulb size for both high beam and low beam headlight applications. The replacement chart covers vehicle production spanning 1986 to 1993.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Mercedes-Benz 300E uses the 9004 bulb across all listed model years (1986-1993) for both high beam and low beam headlights.
The 9004 is a dual-filament halogen bulb, meaning a single bulb contains two separate filaments to serve both the high beam and low beam functions within one housing.
The 9004 operates at 12 volts and draws 65 watts on the high beam filament and 45 watts on the low beam filament.
The 9004 uses a P29t base, which is a specific connector type that physically determines fitment and is not interchangeable with other base configurations without modification.
The 9004 carries ANSI standardization recognized in the United States and Canada, meaning the bulb conforms to defined performance and construction criteria within those markets.
Because the 9004 serves both beam functions simultaneously through its dual-filament design, the high beam and low beam positions on the 300E share an identical bulb specification across the full 1986-1993 range.