Plymouth Concord high beam and low beam headlight bulbs both utilize the H6006 size. The replacement chart covers 1951 to 1952 vehicle 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 H6006 is the sole bulb type listed across all headlight positions in these specifications, appearing in both the high beam and low beam roles for 1951-1952.
The H6006 is a 5x7-inch rectangular sealed beam unit operating at 12 volts, built to ANSI standards recognized in both the United States and Canada.
Sealed beam units such as the H6006 are self-contained assemblies in which the filament, reflector, and lens are fused into a single glass envelope, meaning the entire unit is replaced rather than an internal bulb.
The Plymouth Concord uses the same H6006 specification for both the high beam and low beam headlight positions, indicating a single sealed beam unit serves dual lighting functions rather than separate dedicated bulbs for each function.
The shared H6006 fitment across both beam positions and both model years means a single part number satisfies all four headlight positions on these vehicles.