Mercury Medalist headlight bulbs utilize H5001 and H6024 sizes for high beam applications, while low beam functions employ H5006 and H6024 bulb sizes. The replacement chart covers 1956 through 1958 production years with corresponding bulb size specifications.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Mercury Medalist uses three distinct sealed beam bulb types across its headlight system: H5001, H5006, and H6024, all of which conform to ANSI standards recognized in the United States and Canada.
All three bulb types operate on a 12-volt electrical system and are sealed beam units, meaning the entire assembly is replaced rather than an internal filament or capsule.
The H5001 is a 4-inch square sealed beam unit, used for the high beam headlight position on the 1957-1958 Medalist.
The H5006 is a 5.75-inch round sealed beam unit, assigned to the low beam headlight position on the 1957-1958 Medalist.
The H6024 is a 7-inch round sealed beam unit and serves a dual role on the 1956 Medalist, covering both the high beam and low beam positions within a single unit.
The 1956 model year uses a single bulb type for both headlight functions, while the 1957-1958 model years use separate bulb types for high and low beam positions, making the two configurations non-interchangeable with each other.
The square form factor of the H5001 and the round form factors of the H5006 and H6024 are physically incompatible, so substitution between these types is not possible regardless of voltage compatibility.