The Nissan 520 Pickup uses H5001 and H6024 bulb sizes for high beam headlights and H5006 and H6024 sizes for low beam headlights. The replacement chart covers 1965 to 1968 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 Nissan 520 Pickup uses three distinct sealed beam bulb types across its headlight system: H5001, H5006, and H6024, all operating at 12V and all conforming to ANSI standards recognized in both the United States and Canada.
Sealed beam units are self-contained assemblies in which the filament, reflector, and lens are fused into a single housing. None of the three bulb types used in the 520 Pickup accept a replaceable internal bulb; the entire unit requires replacement when the light fails.
The H6024 is a 7-inch round sealed beam unit. In the Nissan 520 Pickup, it serves as both the high beam and low beam headlight for the 1965-1966 model years, functioning as a single-unit solution for the full headlight assembly on those vehicles.
The 1967-1968 model years use a split headlight system, with the H5001 handling high beam duties and the H5006 handling low beam duties. This represents a different headlight configuration from the earlier 1965-1966 single-unit setup.
The H5001 is a 4-inch square sealed beam unit. Its square form factor is physically incompatible with the round housings used by the H6024 and H5006, making cross-substitution between these types impossible regardless of voltage compatibility.
The H5006 is a 5.75-inch round sealed beam unit. Although it shares a round form factor with the H6024, the two differ in size, which means they are not interchangeable despite their similar shape.
The shift from the H6024 single-unit system in 1965-1966 to the separate H5001 and H5006 units in 1967-1968 means that the two production periods require entirely different replacement parts, with no shared bulb types between them.