The Subaru GF headlight bulb specifications include H5001 and H6024 sizes for high beam applications, along with H5006 and H6024 options for low beam functions, representing the distinct bulb configurations required for this model. The replacement chart covers 1975 through 1979 production years and details the corresponding bulb size requirements across that period.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Subaru GF uses three distinct sealed beam unit types across its headlight positions: H5001, H5006, and H6024, all of which conform to ANSI standards recognized in the United States and Canada.
All three sealed beam types operate on a 12V electrical system, and none accept a replaceable bulb. When a unit fails, the entire sealed beam assembly requires replacement.
The H6024 is a 7-inch round sealed beam unit that serves dual duty on the Subaru GF, functioning as both the high beam and low beam headlight in the 1975 configuration.
The 1979 configuration splits headlight duties between two different units: the H5001, a 4-inch square sealed beam, handles the high beam position, while the H5006, a 5.75-inch round sealed beam, handles the low beam position.
The H5001 and H5006 are not interchangeable with each other or with the H6024, as each unit has a distinct physical form factor, either square or round, and a different size designation under the ANSI standard.
The shift from a single H6024 unit type in 1975 to separate H5001 and H5006 units in 1979 reflects a change in headlight housing design between those two model years.