Ford Galaxie high beam headlight bulbs use H5001 size while low beam headlight bulbs use H6006 size specifications. The replacement chart covers vehicle production spanning 1959 to 1967 with corresponding bulb size data.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Ford Galaxie used two distinct sealed beam headlight units across its 1959-1967 model years: the H5001 for high beam and the H5006 for low beam.
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 H5006 is a 5.75-inch round sealed beam unit, also rated at 12V and built to the same ANSI standard applicable in the United States and Canada.
Both the H5001 and H5006 are sealed beam assemblies, meaning the lens, reflector, and filament are fused into a single unit. When the filament fails, the entire assembly requires replacement rather than an internal bulb swap.
The H5001 high beam specification remained unchanged across all nine model years covered, from 1959 through 1967, indicating a consistent fitment requirement throughout that production span.
The H5006 low beam specification similarly held constant across the full 1959-1967 range, with no variation in bulb type across any of those model years.
The square profile of the H5001 and the round profile of the H5006 make the two units physically non-interchangeable, as their housings and mounting configurations correspond to different headlight positions on the vehicle.