Fiat 500L Headlight Bulb Size

Additional Notes

• 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.