The BMW Bavaria high beam headlight uses an H5001 bulb size while the low beam headlight requires an H5006 bulb size. The replacement chart covers vehicle production spanning 1972 to 1974 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 BMW Bavaria uses the H5001 sealed beam unit for high beam headlights across the 1972-1974 model years.
The H5001 is a 4-inch square sealed beam unit operating at 12V. It conforms to ANSI standards applicable in the US and Canada, and the entire unit is replaced rather than an internal filament or capsule.
Low beam headlights on the 1972-1974 BMW Bavaria use the H5006 sealed beam unit.
The H5006 is a 5.75-inch round sealed beam unit, also rated at 12V and built to the same ANSI standard as the H5001. Like the H5001, the whole unit is replaced when the light fails.
Because both the H5001 and H5006 are sealed beam units, the lens, reflector, and filament are fused into a single assembly. There is no separate replaceable bulb inside either unit.
The H5001 and H5006 differ in both shape and size, making them non-interchangeable. The high beam position takes the 4-inch square H5001, while the low beam position takes the 5.75-inch round H5006.
Both units carry ANSI designations, which indicates they meet a standardized specification for North American markets rather than a proprietary or manufacturer-specific design.