The Ford P-350 headlight bulb utilizes H6024 and H6006 sizes for both high and low beam applications. The replacement chart covers 1952 through 1957 vehicle 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 P-350 headlight specifications cover the 1952-1957 model years, with two distinct sealed beam unit types appearing across that span: the H6006 for 1952-1955 and the H6024 for 1956-1957.
Both the H6006 and H6024 are ANSI-standard sealed beam units rated at 12 volts, meaning the lens, reflector, and filament are fused into a single glass assembly rather than housing a separate replaceable bulb.
The H6006 is a 5x7-inch rectangular sealed beam unit, while the H6024 is a 7-inch round sealed beam unit. These two form factors are physically incompatible with each other, so the mounting configuration of the vehicle determines which type is applicable.
On the Ford P-350, the H6006 and H6024 each serve dual duty, meaning the same unit is specified for both the high beam and low beam functions. This is characteristic of sealed beam technology, where a single unit contains multiple filaments to produce both beam patterns.
Because the entire sealed beam unit is the replaceable component rather than an internal bulb, service requires swapping the whole assembly when output degrades or the unit fails.
The ANSI standardization of both units means the H6006 and H6024 were produced by multiple manufacturers to a common specification, making cross-brand substitution possible as long as the ANSI designation matches.