Mercury Monterey high beam and low beam headlight bulbs utilize 9008, H5001, H6024, H5006 bulb sizes across various production generations. The replacement chart covers 1950 through 2007 model 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 Monterey headlight specifications span three distinct bulb technologies across the model's history: sealed beam units in multiple form factors for 1950-1974, and a dual-filament halogen bulb for 2004-2007.
The 9008 is a dual-filament halogen bulb rated at 12V with a P26t base, drawing 65W on high beam and 55W on low beam. Its dual-filament design means a single bulb serves both the high beam and low beam functions in the Mercury Monterey (2004-2007).
The H5001, H5006, H6006, and H6024 are all sealed beam units, meaning the reflector, lens, and filament are fused into a single housing. When the filament fails, the entire unit requires replacement rather than just an internal bulb.
The H5001 is a 4-inch square sealed beam used for high beam in the 1957-1974 Monterey, while the H5006 is a 5.75-inch round sealed beam used for low beam across the same years. These two units are not interchangeable despite serving the same vehicle range.
The 1956 Monterey used the H6024, a 7-inch round sealed beam unit, for both high and low beam positions, making it the only model year in the specifications where a single sealed beam type covered both functions.
The H6006 is a 5x7-inch rectangular sealed beam unit used for both high and low beam positions in the 1950-1955 Monterey. All five sealed beam types across the specifications operate at 12V.
All bulb types listed in the specifications conform to ANSI standards applicable in both the United States and Canada, indicating cross-border fitment consistency for each respective type.
The H5001 and H5006 sealed beam units share the same vehicle fitment years (1957-1974) but occupy different beam positions, and substituting one for the other would result in an incorrect fitment.