Plymouth Fury I high beam headlight bulbs measure H5001 in size, while low beam headlight bulbs measure H5006, with both bulb sizes specified for the vehicle model. The replacement chart contains bulb size specifications across 1968 to 1974 production years.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Plymouth Fury I used two distinct sealed beam headlight units across the 1968-1974 model years: the H5001 for high beam and the H5006 for low beam.
The H5001 is a 4-inch square sealed beam unit operating at 12V. It conforms to ANSI standards recognized in both the United States and Canada.
The H5006 is a 5.75-inch round sealed beam unit, also rated at 12V and built to the same ANSI standard applicable in the United States and Canada.
Both the H5001 and H5006 are sealed beam units, meaning the lens, reflector, and filament are fused into a single assembly. When the filament fails, the entire unit requires replacement rather than an internal bulb swap.
The H5001 and H5006 are not interchangeable with each other. Their physical form factors differ, with one unit being square and the other round, and each is assigned to a specific beam function.
The H5001 high beam specification remained constant across all seven model years covered, from 1968 through 1974, with no variation in bulb type recorded for the Plymouth Fury I.
The H5006 low beam specification similarly held consistent across the full 1968-1974 range for the Plymouth Fury I, with no change in bulb type across those years.