Plymouth Duster high beam and low beam headlight bulbs both utilize the H6024 bulb size. The replacement chart covers 1970 to 1976 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 Plymouth Duster uses the H6024 bulb size for both high beam and low beam headlights across all model years from 1970-1976.
The H6024 is a sealed beam unit, meaning the lens, reflector, and filament are fused into a single assembly. When the filament fails, the entire unit is replaced rather than an internal bulb.
The H6024 follows the ANSI standard recognized in both the United States and Canada, placing it within a regulated specification for round sealed beam headlights.
The unit is a 7-inch round format, which was a standardized headlight form factor widely used in American vehicle production during this era.
The Plymouth Duster (1970-1976) operates its headlight system at 12 volts, consistent with the standard automotive electrical systems of that period.
Because the H6024 serves as both the high beam and low beam unit on the Duster, the same sealed beam assembly handles dual-function lighting through separate filaments within the single unit.
The H6024 designation is interchangeable with other sealed beam units sharing the same ANSI-standardized 7-inch round specification, which allows for cross-brand fitment within that standard.