The Fiat 850 headlight bulb uses an H6024 size for both high beam and low beam applications. The replacement chart covers vehicle production spanning 1967 to 1973.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Fiat 850 uses the H6024 bulb size for both high beam and low beam headlights across all listed model years, 1967-1973.
The H6024 is an ANSI-standard sealed beam unit recognized in the United States and Canada, operating at 12 volts.
A sealed beam unit integrates the filament, reflector, and lens into a single fused glass assembly, meaning the entire unit is replaced rather than an internal bulb.
The H6024 is a 7-inch round sealed beam format, which was a regulated standard size in North America during the era these vehicles were produced.
Because both the high beam and low beam positions share the same H6024 specification on the Fiat 850, a single unit type serves both functions across the headlight assembly.
The ANSI standardization of the H6024 means units from different manufacturers are generally interchangeable, provided they conform to the same sealed beam specification.