Honda Passport Back Up Light Bulb Size

The Honda Passport back up light utilizes 7440, P21W, and 1156 bulb sizes depending on the specific version of the component required for the vehicle. Available data for the lighting components spans from 1994 through 2024 to provide information for various production periods.

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
2023-2024	7440
2021	7440
2019-2020	1156
1994-2002	1156

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Single-filament wedge bulb (T20). 12V, 21W.	7440
ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. 12V, 21W.	1156

Other Locations

Additional Notes

The two bulb types specified for the Honda Passport backup light are the 7440 and the 1156, both of which are ANSI-standardized for the US and Canadian markets.
Both the 7440 and 1156 operate at 12 volts and 21 watts, making them identical in electrical output despite their physical differences.
Both bulbs use a single filament, which is typical for backup lights since the function requires only one steady light output with no secondary intensity level.
The 7440 is a T20 wedge-style bulb, meaning it is held in its socket by the wedge shape of its base rather than by a locking mechanism.
The 1156 uses a BA15s bayonet base, a single-contact bayonet fitting that locks into its socket with a twist.
Because the 7440 and 1156 differ in base type, one cannot be substituted for the other despite sharing the same voltage and wattage ratings.
The Honda Passport (2021-2024) uses the 7440 bulb for the backup light position.
The 1156 bulb is specified for the 1994-2002 and 2019-2020 model years.
The model year 2021 represents a change in backup light bulb type from the 1156 used in 2019-2020 to the 7440, indicating a socket change between those generations.