The BMW L7 high beam headlight uses an H5001 bulb size while the low beam headlight requires an H5006 bulb size. The replacement chart covers 1986 to 1987 model 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 BMW L7 uses two distinct sealed beam types across its headlight system: the H5001 for high beam and the H5006 for low beam, both conforming to ANSI standards applicable in the US and Canada.
The H5001 is a 4-inch square sealed beam unit operating at 12V. As a sealed beam, the lens, reflector, and filament form a single assembly, meaning the entire unit is replaced rather than an individual bulb.
The H5006 is a 5.75-inch round sealed beam unit, also rated at 12V and similarly constructed as a non-serviceable assembly requiring full unit replacement.
Both the H5001 and H5006 types were fitted to the BMW L7 across the 1986-1987 model years, with no variation in bulb specification between those years.
The square format of the H5001 and the round format of the H5006 reflect different physical housings, making the two types non-interchangeable with each other despite sharing the same operating voltage.
ANSI standardization of both sealed beam types means the H5001 and H5006 are defined by a consistent specification across manufacturers, so replacement units from different suppliers conform to the same physical and electrical parameters.