Ford F-450 Super Duty Back Up Light Bulb Size
The Ford F-450 Super Duty back up light utilizes bulb sizes WT21W, 3157, 7440, 921, 2356, 2456, and 3156. Available data for the specified components covers the range from 1999 to 2022.
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
If US Type and EU Type show the same value, a direct cross-reference for this bulb is not available or the data is insufficient.
| Years | US Type | EU Type | Shop |
|---|---|---|---|
| 2020-2022 | WT21W | WT21W | Check Price |
| 2019 | 3157 | P27/7W | Check Price |
| 2017-2018 | 7440 | W21W | Check Price |
| 2011-2016 | 921 | W16W | Check Price |
| 2010 | 2356 | 2356 | Check Price |
| 2007-2009 | 2456 | 2456 | Check Price |
| 2006 | 2356 | 2356 | Check Price |
| 2001-2005 | 2456 | 2456 | Check Price |
| 2000 | 3156 | P27W | Check Price |
| 1999 | 2356 | 2356 | Check Price |
Bulb Specifications
| Description | Type | Shop |
|---|---|---|
| Ford OEM part. Single-filament wedge bulb (T20). Originally used in 2021+ Ford F-150, Bronco, and Maverick. 12V, 21W. | WT21W | Check Price |
| ANSI standard (US & Canada). Dual-filament wedge bulb (T25). 12V, 27W/7W. | 3157 | Check Price |
| ANSI standard (US & Canada). Single-filament wedge bulb (T20). 12V, 21W. | 7440 | Check Price |
| ANSI standard (US & Canada). Wedge bulb (T15). 12V, 16W. | 921 | Check Price |
| ANSI standard (US & Canada). Dual-filament bulb with BAY15d bayonet base. 12V. | 2356 | Check Price |
| ANSI standard (US & Canada). Festoon bulb, specialty application. 12V. | 2456 | Check Price |
| ANSI standard (US & Canada). Single-filament wedge bulb (T25). 12V, 27W. | 3156 | Check Price |