Mercury headlight bulbs utilized the H6006 size for both high beam and low beam applications across the Mercury model line. The replacement chart covers 1950 to 1952 production years with corresponding bulb specifications.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The H6006 is a 5x7-inch rectangular sealed beam unit operating at 12 volts. It conforms to ANSI standards recognized in both the United States and Canada.
Unlike modern halogen or HID bulbs, the H6006 is not a replaceable bulb in the conventional sense. When the unit fails, the entire sealed beam assembly is replaced rather than an internal filament or capsule.
The Mercury Mercury (1950-1952) uses the H6006 bulb for both the high beam and low beam headlight positions. A single bulb type therefore serves dual functions across the headlight system.
The sealed beam construction of the H6006 integrates the filament, reflector, and lens into one self-contained glass unit. This design was the dominant headlight format in North American vehicles of that era.
Because the same H6006 unit is specified for both beam positions across all three model years, there is no separate bulb for high and low beam operation. The beam pattern is determined by which filament within the sealed unit is activated.