Ford Escape Back Up Light Bulb Size

Ford Escape back up light bulb sizes include 7440, 921, and 2456 configurations across various model generations. The replacement chart covers vehicle production years spanning 2001 to 2023.

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
2021-2023	7440
2018-2020	921
2008-2012	921
2006-2007	2456
2005	2356
2003-2004	2456
2002	2356
2001	3156

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
ANSI standard (US & Canada). Festoon bulb, specialty application. 12V.	2456
ANSI standard (US & Canada). Dual-filament bulb with BAY15d bayonet base. 12V.	2356
ANSI standard (US & Canada). Single-filament wedge bulb (T25). 12V, 27W.	3156

Other Locations

Additional Notes

The Ford Escape uses five distinct back up light bulb types across its model years: the 7440, 921, 2456, 2356, and 3156, all of which conform to ANSI standards applicable in the US and Canada.
The 921 is the most frequently specified bulb across the Ford Escape back up light fitments, covering the 2008-2012 and 2018-2020 model years. It is a T15 wedge-base bulb rated at 12V and 16W.
The 7440 is a T20 single-filament wedge bulb rated at 12V and 21W. The Ford Escape (2021-2023) uses this type for the back up light position.
The 2456 is a festoon-style bulb rated at 12V and is designated for specialty applications. It is specified for the Ford Escape in 2003-2004 and 2006-2007.
The 2356 is a dual-filament bulb with a BAY15d bayonet base, rated at 12V. This base type uses two offset locking pins to prevent incorrect installation, which is a key fitment consideration. It is specified for the 2002 and 2005 model years.
The 3156 is a T25 single-filament wedge bulb rated at 12V and 27W, making it the highest-wattage back up light bulb in the Ford Escape specifications. It is specified exclusively for the 2001 model year.
The wedge base found on the 921 (T15) and 7440 (T20) bulbs differs in physical size, meaning these two types are not interchangeable despite both using wedge-style bases.
The 2356 and 2456 share a similar numerical designation but are fundamentally different in base type and filament configuration. The 2356 uses a BAY15d bayonet base with dual filaments, while the 2456 is a festoon type, making them incompatible with each other.
The 3156 and 7440 are both single-filament bulbs but differ in base size and wattage, with the T25 base of the 3156 being physically larger than the T20 base of the 7440, precluding substitution between them.
A notable shift in back up light bulb specification occurs between the 2020 and 2021 Ford Escape, where the fitment changes from the 921 (T15, 16W) to the 7440 (T20, 21W), reflecting a change in socket type across those model years.