The Mercedes-Benz 250S uses H5001 bulb size for high beam headlights and H5006 bulb size for low beam headlights. The replacement chart covers vehicle production years spanning 1966 to 1971 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 250S uses the H5001 bulb size for high beam headlights across the 1966-1971 model years covered in these specifications.
The H5001 is a 4-inch square sealed beam unit operating at 12V. It conforms to ANSI standards applicable in the United States and Canada. Because it is a sealed beam design, the entire unit is replaced rather than an internal filament or capsule.
Low beam headlights on the 250S are fitted with the H5006 across the same 1966-1971 model years.
The H5006 is a 5.75-inch round sealed beam unit, also rated at 12V and conforming to the same ANSI standards as the H5001. Like the H5001, the H5006 requires full unit replacement when the light fails.
The H5001 and H5006 are not interchangeable with each other. The H5001 is a square format used exclusively for high beam positions, while the H5006 is a round format designated for low beam positions.
Both sealed beam types are governed by ANSI standards, meaning their physical and electrical characteristics are standardized across manufacturers producing compliant units for the North American market.