The Mercedes-Benz 280S uses an H5001 bulb size for high beam headlights and an H5006 bulb size for low beam headlights. The replacement chart covers vehicle production years spanning 1968 to 1976 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 280S uses the H5001 bulb size for high beam headlights across the 1968-1971 and 1975-1976 model years, and the H5006 for low beam headlights across the same years.
Both the H5001 and H5006 are ANSI-standard sealed beam units rated at 12V, a designation that reflects compliance with North American standards used in the United States and Canada.
The H5001 is a 4-inch square sealed beam unit, while the H5006 is a 5.75-inch round sealed beam unit. The differing shapes and sizes mean the two types are not interchangeable with each other.
Sealed beam headlights, such as the H5001 and H5006, integrate the filament, reflector, and lens into a single fused glass assembly. When the filament fails, the entire unit requires replacement rather than an internal bulb swap.
The square form factor of the H5001 and the round form factor of the H5006 are physically distinct, and each is designed to fit a specific headlight housing. Installing the incorrect unit would result in a fitment failure.
The consistent use of H5001 for high beam and H5006 for low beam across all listed model years of the 280S indicates that both bulb types are tied to the vehicle's fixed headlight housing design rather than varying by year.