Plymouth Suburban high beam and low beam headlight bulbs utilized H5001, H6024, and H6006 sizes, with low beam applications also incorporating H5006 bulb options across the model line. The replacement chart documents bulb size specifications spanning 1950 through 1961 production years.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The H6006 is the most frequently specified bulb across the Plymouth Suburban's headlight history, serving as both the high beam and low beam unit from 1950-1955. It is a 5x7-inch rectangular sealed beam unit rated at 12V and conforms to the ANSI standard for the US and Canada.
All four bulb types found in these specifications, the H5001, H5006, H6024, and H6006, are sealed beam units. This means the lens, reflector, and filament are fused into a single assembly, and the entire unit is replaced rather than an internal bulb.
The 1956 Plymouth Suburban uses the H6024 for both the high beam and low beam positions. The H6024 is a 7-inch round sealed beam unit rated at 12V, making it the physically largest round format among the types listed in these specifications.
From 1957-1961, the Plymouth Suburban transitions to a two-bulb system, with the H5001 handling the high beam and the H5006 handling the low beam. These are distinct units and are not interchangeable with each other despite both being 4-inch and 5.75-inch round sealed beams, respectively.
The H5001 is a 4-inch square sealed beam unit, while the H5006 is a 5.75-inch round sealed beam unit. Their differing shapes and sizes mean they occupy separate positions in the headlight assembly and serve dedicated beam functions.
All bulb types in these specifications operate at 12V, which reflects the standardized 12-volt electrical systems that were established in North American passenger vehicles during this era.
The H6006 and H6024 both conform to ANSI standards for the US and Canada, as do the H5001 and H5006, meaning all units in these specifications share a common regulatory framework despite their differing physical formats.
The shift from the single H6006 sealed beam used through 1955 to the dual H5001 and H5006 system introduced in 1957 represents a change in headlight architecture, with the earlier single-unit format giving way to separate dedicated high and low beam assemblies.