Honda Fit Daytime Running Light Bulb Size

Additional Notes

• The Honda Fit uses the 9003 bulb size for the daytime running light across all listed model years from 2007 to 2020.
• The 9003 is a dual-filament halogen bulb, meaning it contains two separate filaments within a single housing, one rated at 60W and the other at 55W.
• The bulb operates on a 12-volt electrical system, which is standard for passenger vehicle applications.
• The 9003 uses a P43t base, a bayonet-style mount that physically determines fitment and is not interchangeable with bulbs carrying a different base type.
• The 9003 designation is an ANSI standard recognized in the United States and Canada, distinguishing it from the functionally similar H4 bulb used in other markets, which shares the same dual-filament halogen design but carries a different designation and may differ in base tolerances.
• Because the 9003 and H4 are sometimes listed as cross-compatible, fitment should be confirmed against the P43t base specification before substitution, as base tolerances between the two standards can vary by manufacturer.
• The 2015-2020 model years represent a continuous span of Honda Fit vehicles all specifying the same 9003 bulb, indicating no change in daytime running light bulb fitment across that generation.
• The 2007-2012 model years also share the 9003 specification, reflecting consistent bulb fitment across that earlier production span as well.