The Mercedes-Benz 450SE uses an H5001 bulb size for high beam headlights and an H5006 bulb size for low beam headlights. The replacement chart covers 1973 through 1976 production years with corresponding bulb specifications.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Mercedes-Benz 450SE uses the H5001 bulb size for high beam headlights across the 1973-1976 model years.
The H5001 is a 4-inch square sealed beam unit operating at 12V. Because it is a sealed beam design, the entire unit is replaced rather than an internal filament or bulb.
The low beam headlight position on the 450SE is filled by the H5006 across the same 1973-1976 span.
The H5006 is a 5.75-inch round sealed beam unit, also rated at 12V and also requiring full unit replacement rather than individual bulb replacement.
Both the H5001 and H5006 conform to ANSI standards applicable in the United States and Canada, meaning they follow a regulated sizing and performance classification system used across North American markets.
The square format of the H5001 and the round format of the H5006 are physically distinct, and the two units are not interchangeable with each other or with non-sealed-beam halogen or other bulb types without modification to the headlight housing.