The Rover 2000 uses an H5001 bulb size for high beam headlights and an H5006 bulb size for low beam headlights. The replacement chart covers 1969 to 1971 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 H5001 is a 4-inch square sealed beam unit operating at 12V. It conforms to ANSI standards applicable in the United States and Canada. Because it is a sealed beam design, the entire unit is replaced rather than an internal filament or bulb element.
The H5006 is a 5.75-inch round sealed beam unit, also rated at 12V and conforming to the same ANSI standards. Like the H5001, it functions as a complete replaceable assembly rather than a serviceable bulb within a housing.
The Rover 2000 uses the H5001 for high beam headlights across the 1969-1971 model years. The sealed beam format means the lens, reflector, and filament are fused into a single unit, which is a characteristic of older North American lighting standards.
Low beam headlights on the 1969-1971 Rover 2000 use the H5006. The round format of the H5006 differs physically from the square H5001, making the two units non-interchangeable between the high and low beam positions.
Both the H5001 and H5006 share the same 12V operating voltage, which is consistent with the standard 12-volt electrical systems found in passenger vehicles of that era.
The ANSI designation on both units indicates compliance with a standardized specification governing physical size, wattage, and light output, which allows equivalent units from different manufacturers to serve as direct replacements provided the correct type designation is matched.