The International S1654 uses H6024 bulb size for both high beam and low beam headlight applications. The replacement chart covers vehicle production spanning 1984 to 1989.
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 headlight positions for the International S1654, covering model years 1984-1989.
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.
In a sealed beam design, the reflector, lens, and filament are fused into a single glass unit. When the filament fails, the entire assembly requires replacement rather than an internal bulb swap.
The International S1654 uses the same H6024 unit for both high beam and low beam functions, meaning the sealed beam housing contains filaments for both lighting modes within one unit.
Because the H6024 is an ANSI-standardized type, physically compatible replacements from multiple manufacturers generally conform to the same mounting, voltage, and optical specifications.