The Oldsmobile 442 uses an H5001 bulb size for high beam headlights and an H5006 bulb size for low beam headlights. The replacement chart covers 1964 through 1971 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 Oldsmobile 442 uses the H5001 sealed beam unit for high beam headlights across all listed model years, 1964-1971.
The H5001 is a 4-inch square sealed beam unit operating at 12V. It conforms to ANSI standards recognized in both the United States and Canada.
The low beam headlight position across the same 1964-1971 model years calls for the H5006 sealed beam unit.
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.
Both the H5001 and H5006 are sealed beam units, meaning the lens, reflector, and filament are fused into a single assembly. When the filament fails, the entire unit requires replacement rather than an internal bulb swap.
The H5001 and H5006 differ in shape and size, making them non-interchangeable. The high beam position requires the 4-inch square H5001, while the low beam position requires the 5.75-inch round H5006.
The consistent use of H5001 and H5006 across all eight listed model years indicates that the 442 retained the same headlight assembly format throughout the 1964-1971 production span covered by these specifications.