The Opel Manta high beam headlight bulb size includes H5001 and H6024 options, while low beam headlight bulb size encompasses H5006 and H6024 specifications. The replacement chart covers 1971 to 1975 vehicle production years with corresponding bulb size data.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Opel Manta uses three distinct sealed beam unit types across its headlight positions and model years: H5001, H5006, and H6024, all conforming to ANSI standards recognized in the United States and Canada.
All three sealed beam types operate on 12V and are not serviceable at the bulb level. When a unit fails, the entire sealed beam assembly requires replacement rather than an internal bulb.
The H6024 is a 7-inch round sealed beam unit. In the Opel Manta, it served both the high beam and low beam positions for the 1971-1972 model years, functioning as a single unit type across both lighting roles.
Beginning with the 1973 model year, the Manta transitioned away from the H6024 to separate unit types for each beam function, with the H5001 assigned to high beam and the H5006 assigned to low beam. This split continued through 1975.
The H5001 is a 4-inch square sealed beam unit, distinguishing it physically from the round format used in earlier Manta model years. It covered the high beam position for 1973-1975.
The H5006 is a 5.75-inch round sealed beam unit assigned exclusively to the low beam position for 1973-1975. Despite sharing a round format with the H6024, the two units are not the same size and are not interchangeable.
The shift from H6024 to the H5001 and H5006 pairing represents a change in headlight configuration between the 1972 and 1973 model years, meaning parts sourced for pre-1973 Manta headlights are incompatible with 1973-1975 applications.