The Austin Marina high beam and low beam headlight bulbs both utilize the H6024 bulb size. The replacement chart covers vehicle production spanning 1973 to 1975.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The H6024 is the sole bulb type listed across all positions and years in the Austin Marina headlight specifications, appearing in both high beam and low beam applications for 1973-1975.
The H6024 is a 7-inch round sealed beam unit operating at 12 volts, conforming to ANSI standards recognized in the United States and Canada.
As a sealed beam unit, the H6024 does not contain a replaceable bulb element. When the unit fails, the entire assembly is replaced rather than an internal filament or capsule.
The Austin Marina shares the same H6024 unit for both high beam and low beam functions, meaning a single sealed beam type serves dual lighting roles across all three model years covered.
The sealed beam format of the H6024 means fitment is governed by the physical housing of the unit itself, and substitution with bulb-and-reflector assemblies of differing construction would not be directly interchangeable.