Ford Custom high beam and low beam headlight bulbs utilize sizes H5001, H5006, H6024, and H6006 depending on model configuration. The replacement chart covers 1950 through 1972 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 Ford Custom uses three distinct sealed beam formats across its model years: the H5001 (4-inch square), the H5006 (5.75-inch round), the H6006 (5x7-inch rectangular), and the H6024 (7-inch round), all operating at 12V and conforming to ANSI standards recognized in both the United States and Canada.
All four bulb types found in these specifications 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 Ford Custom (1964-1972) uses the H5001 for the high beam position and the H5006 for the low beam position, making the two headlight positions non-interchangeable despite both being 12V sealed beam units, as they differ in physical size and shape.
The H6024 sealed beam is a 7-inch round unit, a format that was widely adopted across many North American vehicles of its era, which may affect parts availability relative to the less common square and rectangular formats.
The 1957 Ford Custom uses the H6024 for both high and low beam positions, meaning a single sealed beam type serves both functions in that model year, unlike the 1964-1972 configuration where each beam position requires a different unit.
The H6006 is a 5x7-inch rectangular sealed beam unit used in the Ford Custom for both high and low beam positions across the 1950-1952 model years, making it the sole headlight format for those vehicles.
The H5001 and H5006 units, used in the 1964-1972 Ford Custom, are physically incompatible with each other due to their differing shapes, a square 4-inch unit versus a round 5.75-inch unit, which prevents cross-position substitution.