Chevrolet Brookwood headlight bulbs utilize H5001 size for high beam and H5006 size for low beam applications. The replacement chart covers 1958 through 1972 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 Chevrolet Brookwood uses the H5001 bulb type for high beam headlights across all listed model years, spanning 1958-1961 and 1969-1972.
The H5001 is a 4-inch square sealed beam unit operating at 12V. It conforms to ANSI standards recognized in both the United States and Canada. Because it is a sealed beam unit, the entire assembly is replaced rather than an internal filament or capsule.
Low beam headlights across the same model years use the H5006, a 5.75-inch round sealed beam unit also rated at 12V and conforming to the same ANSI standards applicable in the United States and Canada.
Like the H5001, the H5006 is a sealed beam unit, meaning the lens, reflector, and filament are fused into a single non-serviceable assembly. Replacement involves removing the entire unit.
The H5001 and H5006 differ in both shape and size. The H5001 is square at 4 inches, while the H5006 is round at 5.75 inches. These two types are not interchangeable with each other, as each occupies a distinct housing designed for its specific form factor.
Both the H5001 and H5006 operate on a 12V electrical system, which is standard for automotive applications of this type.