The International A122 uses H6024 bulb size for both high beam and low beam headlight applications. The replacement chart covers 1957 to 1958 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 H6024 is the sole bulb type listed across all headlight positions for the International A122, covering both high beam and low beam functions for the 1957-1958 model years.
The H6024 is a 7-inch round sealed beam unit operating at 12 volts. It conforms to ANSI standards recognized in both the United States and Canada.
A sealed beam unit differs from a conventional bulb in that the filament, reflector, and lens are fused into a single assembly. When the filament fails, the entire unit requires replacement rather than just an internal bulb.
The H6024 serves dual headlight roles on the International A122, covering both the high beam and low beam positions. This indicates a single-unit design that handles both lighting functions within one sealed assembly.
The ANSI standardization of the H6024 means the unit conforms to defined dimensional and electrical specifications, which historically allowed interchangeability across vehicle makes and models using the same standard.