The International R111 uses H6024 bulb size for both high beam and low beam headlight applications. The replacement chart covers 1953 to 1955 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 in the International R111 specifications, covering both high beam and low beam functions for the 1953-1955 model years.
The H6024 is a 7-inch round sealed beam unit operating at 12 volts, conforming to ANSI standards recognized in the United States and Canada.
A sealed beam unit integrates the filament, reflector, and lens into a single glass assembly. Because of this construction, the entire unit is replaced rather than an internal bulb component.
The H6024 serves a dual role in the International R111, functioning as both the high beam and low beam headlight, which indicates a single-filament or unified sealed beam arrangement rather than a separate bulb for each function.
The ANSI standardization of the H6024 means the unit conforms to fixed dimensional and performance specifications, allowing fitment of units from different manufacturers provided they carry the same designation.
Substituting a non-sealed-beam bulb type in place of the H6024 would not be a direct replacement, as the sealed beam format requires a housing designed to accept the full 7-inch round assembly.