Fiat 500L high beam and low beam headlight bulbs both use a 9012 bulb size for replacement. The chart covers 2014 to 2020 model years with corresponding bulb size specifications.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Fiat 500L uses the 9012 bulb type for both its high beam and low beam headlight positions across the 2014-2020 model years.
The 9012 is a halogen bulb that operates on a single filament and is rated at 55 watts. It belongs to the HIR2 (Halogen Infrared Reflecting) family, which uses a reflective coating on the bulb capsule to redirect heat back onto the filament, improving luminous efficiency compared to standard halogen designs.
Because the same 9012 bulb serves both the high beam and low beam positions on the Fiat 500L, the vehicle uses a single dual-function bulb per headlight housing rather than separate bulbs for each function.
The 9012 and the visually similar 9006 are not interchangeable. The 9012 has a different base configuration and a higher lumen output, and substituting a 9006 in a 9012 socket is not a compatible replacement.
The 9012 bulb uses a proprietary base that is not cross-compatible with the more widely available H11 or H7 bases, which are common in other halogen headlight applications.
The consistent use of the 9012 across all recorded model years of the Fiat 500L means that a single bulb specification applies to the entire 2014-2020 production span for both headlight functions.