The Ford E-100 headlight bulb uses H6054 and H6024 sizes for both high and low beam applications. The replacement chart covers vehicle production spanning 1969 to 1983.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Ford E-100 used two distinct sealed beam headlight units across its model years: the H6024 for 1969-1978 and the H6054 for 1979-1983.
Both the H6024 and H6054 are sealed beam units, meaning the lens, reflector, and filament are fused into a single assembly. When a filament fails, the entire unit is replaced rather than an internal bulb.
The H6024 is a 7-inch round sealed beam unit operating at 12 volts, conforming to ANSI standards recognized in both the United States and Canada.
The H6054 is a 5x7-inch rectangular sealed beam unit operating at 12 volts, also conforming to ANSI standards recognized in both the United States and Canada.
On the Ford E-100, the same bulb size serves both the high beam and low beam functions in a given model year, indicating that each headlight unit contains dual filaments to produce both beam patterns.
The H6024 and H6054 are not interchangeable with each other, as they differ in shape and physical form factor, one being round and the other rectangular.
The transition from the H6024 to the H6054 on the Ford E-100 occurred between the 1978 and 1979 model years, affecting both high beam and low beam positions simultaneously.
Because both units follow ANSI standards, replacement sealed beams from any ANSI-compliant manufacturer are generally compatible with the Ford E-100, provided the correct size designation is matched to the appropriate model year.