The Mercedes-Benz 500SL uses 9004 bulb size for both high beam and low beam headlight applications. The replacement chart covers 1990 to 1993 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 Mercedes-Benz 500SL uses the 9004 bulb for both high beam and low beam headlights across the 1990-1993 model years.
The 9004 is a dual-filament halogen bulb, meaning a single bulb contains two separate filaments to serve both high and low beam functions within one housing.
The 9004 operates at 12 volts and carries a wattage rating of 65W on the high beam filament and 45W 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 such as P43t or P14.5s.
The 9004 is an ANSI-standardized bulb approved for use in the United States and Canada, meaning it conforms to defined performance and construction requirements for those markets.
Because the 9004 serves both beam functions in the 500SL, a single bulb failure affects both high and low beam output in the corresponding headlight assembly.