The Oldsmobile F85 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 1961 to 1972 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 Oldsmobile F85 used the H5001 sealed beam unit for high beam headlights across all model years from 1961-1972.
The H5001 is a 4-inch square sealed beam unit operating at 12V. It conforms to the ANSI standard recognized in both the United States and Canada. The entire unit is replaced when the light fails, as the light source is not a separate, removable component.
The H5006 sealed beam unit served as the low beam headlight on the F85 for the same 1961-1972 model year span.
The H5006 is a 5.75-inch round sealed beam unit, also rated at 12V and built to the same ANSI standard as the H5001. Like the H5001, it is replaced as a complete unit rather than by an internal bulb.
The H5001 and H5006 are not interchangeable with each other. The two units differ in shape and size, with the H5001 being square and the H5006 being round, which corresponds to their distinct high beam and low beam roles respectively.
Both units share the same 12V operating voltage, which reflects the standard 12-volt electrical system common to domestic passenger vehicles of that era.