The Austin America high beam and low beam headlight bulbs both utilize the H6024 size. The replacement chart covers vehicle production spanning 1968 to 1972.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The H6024 is an ANSI-standard sealed beam unit used in both the high beam and low beam headlight positions of the Austin America across all listed model years, 1968-1972.
A sealed beam unit differs from a conventional bulb in that the filament, reflector, and lens are fused into a single glass assembly, meaning the entire unit is replaced rather than an internal bulb element.
The H6024 is a 7-inch round format, which was a regulated and standardized size under North American lighting requirements at the time of the Austin America's production.
The H6024 operates at 12 volts, consistent with the standard automotive electrical system voltage used in passenger vehicles of that era.
Because the H6024 is an ANSI-standardized unit recognized in both the United States and Canada, fitment is governed by that shared specification rather than by manufacturer-exclusive sizing.
The Austin America uses the same H6024 unit for both high beam and low beam functions, indicating a dual-filament sealed beam design where a single unit serves both lighting modes.