Honda Fit Tail Light Bulb Size

The Honda Fit tail light utilizes bulb sizes 7440, 7443, and 168 depending on the specific lighting component. Data for the mentioned components covers the range from 2007 to 2019.

The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.

Bulb Size by Year Range

Years	Bulb Size
2019	7440
2008-2012	7443
2007	168

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Single-filament wedge bulb (T20). 12V, 21W.	7440
ANSI standard (US & Canada). Dual-filament wedge bulb (T20). 12V, 21W/5W.	7443
ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 4.9W.	168

Other Locations

Additional Notes

The Honda Fit tail light specifications reference three distinct bulb types across its model years: the 7440, 7443, and 168.
The 7443 is the most frequently specified bulb in these records, covering the 2008-2012 Honda Fit tail light position across five consecutive model years.
The 7443 is a dual-filament T20 wedge bulb rated at 12V with a 21W/5W output, meaning its two filaments serve separate functions, typically a brighter one for braking and a dimmer one for running light duty.
The 7440 shares the same T20 wedge form factor as the 7443 but carries only a single filament rated at 21W, making the two bulbs physically similar yet functionally different.
Despite their shared T20 housing, the 7440 and 7443 are not interchangeable. Installing a single-filament 7440 in a socket designed for the dual-filament 7443 would result in the loss of one lighting function.
The 2019 Honda Fit tail light position uses the 7440, a specification that differs from the 7443 used in the 2008-2012 model years.
The 168 is a T10 miniature wedge bulb rated at 12V and 4.9W, a significantly lower wattage than either the 7440 or 7443, reflecting its use in a lower-intensity lighting role on the 2007 Honda Fit.
The T10 form factor of the 168 is physically smaller than the T20 form factor shared by the 7440 and 7443, and the three bulb types are not cross-compatible with one another.
All three bulb types in these specifications conform to ANSI standards applicable in the US and Canada, indicating standardized electrical and physical ratings within those markets.
All bulbs listed operate on a 12V system, consistent with the standard electrical architecture of passenger vehicles in these markets.