Honda Fit Back Up Light Bulb Size

The Honda Fit back up light utilizes 7440 and 921 bulb sizes for the rear illumination system. Data for the specific components covers the time range from 2007 through 2020.

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
2015-2020	7440
2009-2012	921
2007-2008	7440

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Single-filament wedge bulb (T20). 12V, 21W.	7440
ANSI standard (US & Canada). Wedge bulb (T15). 12V, 16W.	921

Other Locations

Additional Notes

The Honda Fit uses two distinct bulb sizes across its model years for the back up light position: the 7440 and the 921.
The 7440 bulb is specified for the Honda Fit for the 2007-2008 and 2015-2020 model years.
The 921 bulb is specified for the 2009-2012 model years.
Both the 7440 and 921 are ANSI-standard wedge-type bulbs rated at 12 volts, making them compatible with standard automotive electrical systems.
The 7440 is a T20 wedge bulb with a single filament and a 21-watt output, placing it in the higher-wattage range among common automotive wedge bulbs.
The 921 is a T15 wedge bulb rated at 16 watts, making it physically smaller and lower in wattage than the 7440.
The T20 and T15 designations refer to the outer width of the wedge base, with T20 being wider than T15. These two sizes are not interchangeable despite both being wedge-type bulbs.
The wattage difference between the 7440 and the 921 means the two bulbs also draw different amounts of current, which is a relevant factor in socket and circuit compatibility.
Both bulb sizes conform to ANSI standards applicable in the United States and Canada.