The Avanti II high beam and low beam headlight bulbs both utilize the H6024 size. The replacement chart covers vehicle production spanning 1965 to 1973.
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 Avanti II, covering both high beam and low beam functions for the 1965-1973 model years.
The H6024 is an ANSI-standardized 7-inch round sealed beam unit, meaning the lens, reflector, and filament are fused into a single assembly rather than housing a separate replaceable bulb.
Because the H6024 is a sealed beam unit, the entire assembly requires replacement when the filament fails, as no internal bulb component is accessible or serviceable on its own.
The H6024 operates on a 12-volt electrical system, which is consistent with the standard automotive electrical architecture used in vehicles of that era.
The Avanti II 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 within one housing.
The ANSI standardization of the H6024 means the unit conforms to a defined specification recognized across the United States and Canada, allowing for broad cross-brand interchangeability with other vehicles specifying the same sealed beam type.