The International SA122 headlight bulb utilizes the H6024 size for both high beam and low beam functions. The replacement chart covers 1956 to 1957 vehicle production years with corresponding bulb 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 specified across all listed positions and years for the International SA122, appearing in both the high beam and low beam headlight roles for 1956-1957.
The H6024 is a 7-inch round sealed beam unit operating at 12 volts. It conforms to ANSI standards recognized in 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-beam functions in the International SA122, covering both high and low beam headlight positions with the same part number across both listed model years.
Because the same sealed beam type is shared across both beam positions, a single H6024 unit is not inherently designated as a high beam or low beam exclusive component in this application.