Ford Fiesta headlight bulbs utilize H1 and H6024 sizes for high beam applications, while low beam configurations require H11 and H6024 bulb sizes across various production generations. The replacement chart documents bulb size specifications spanning 1978 through 2019 model years.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Ford Fiesta uses three distinct headlight bulb types across its model years: H1, H11, and H6024, each belonging to a different technical standard and serving different vehicle generations.
The H1 and H11 bulbs both follow the ECE standard, which governs lighting equipment across Europe and much of the world, and both operate at 12V and 55W with single-filament halogen construction.
Despite sharing voltage and wattage ratings, the H1 and H11 are not interchangeable. The H1 uses a P14.5s base, while the H11 uses a PGJ19-2 base, making the two physically incompatible with each other's sockets.
For the Ford Fiesta (2014-2019), the high beam headlight position requires an H1 bulb, and the low beam position requires an H11 bulb, meaning the two functions use different bulb types within the same vehicle.
The H6024 is an ANSI-standard sealed beam unit measuring 7 inches round, used in the Ford Fiesta (1978-1980) for both high beam and low beam positions.
Unlike the H1 and H11, the H6024 is not a replaceable bulb in the conventional sense. When the unit fails, the entire sealed assembly is replaced rather than just an internal bulb.
The H1 and H11 bulbs carry approval for use in the United States in addition to their ECE certification, while the H6024 is specific to the ANSI standard used in the US and Canada.
The shared H6024 fitment across both high beam and low beam positions in the 1978-1980 Fiesta means a single bulb type covers both lighting functions for those model years.