Mercury Meteor high beam headlight bulbs measure H5001 in size while low beam headlight bulbs measure H5006, with both bulb sizes specified for this vehicle model. The replacement chart covers 1961 through 1963 production years and contains bulb size specifications for these headlight applications.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Mercury Meteor uses two distinct sealed beam units across its 1961-1963 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 a filament fails, the entire unit requires replacement rather than an internal bulb swap.
The H5001 and H5006 are not interchangeable with each other. The square form factor of the H5001 and the round form factor of the H5006 correspond to physically distinct housings serving separate beam functions.
The high beam and low beam positions on the Mercury Meteor use different physical formats, a square unit forward for high beam and a round unit for low beam, which prevents cross-installation between the two positions.
Both sealed beam types share the same 12V electrical rating, placing them within the standard 12-volt automotive electrical systems common to vehicles of that era.