Ford F-450 Super Duty Turn Signal Bulb Size
The Ford F-450 Super Duty front outer turn signal requires a 194 bulb size, while front turn signals use 7444NA, 7443NA, or 3157NA bulb sizes, and rear turn signals use 4257NA, 3157, or 4157 bulb sizes. The replacement chart covers 1999 through 2022 model years with corresponding bulb size specifications.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
Front Outer Turn Signal
| Years | Bulb Size |
|---|---|
| 2007-2010 | 194 |
Front Turn Signal
| Years | Bulb Size |
|---|---|
| 2021-2022 | 7444NA |
| 2018-2019 | 7444NA (With Halogen Capsule Headlamps) |
| 2017 | 7443NA (With Halogen Capsule Headlamps) |
| 2011-2016 | 3157NA |
| 2006-2010 | 3157NA (With Halogen Capsule Headlamps) |
| 4157 (With Sealed Beam Headlamps) | |
| 2004-2005 | 3157NA (With Halogen Capsule Headlamps) |
| 3157 (With Sealed Beam Headlamps) | |
| 1999-2003 | 3157 |
Rear Turn Signal
| Years | Bulb Size |
|---|---|
| 2020-2022 | 4257NA |
| 2017-2019 | 3157 (With Halogen Capsule Headlamps) |
| 2007-2016 | 3157 |
| 2006 | 4157 |
| 1999-2005 | 3157 |
Bulb Specifications
| Description | Bulb Size |
|---|---|
| ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 3.78W. | 194 |
| ANSI standard (US & Canada). Dual-filament wedge bulb (T20), natural amber glass. 12V, 21W/5W. | 7444NA |
| ANSI standard (US & Canada). Dual-filament wedge bulb (T20), natural amber glass. 12V, 21W/5W. | 7443NA |
| ANSI standard (US & Canada). Dual-filament wedge bulb (T25), natural amber glass. 12V, 27W/7W. | 3157NA |
| ANSI standard (US & Canada). Dual-filament wedge bulb (T25). 12V, 27W/7W. | 4157 |
| ANSI standard (US & Canada). Dual-filament wedge bulb (T25). 12V, 27W/7W. | 3157 |
| ANSI standard (US & Canada). Dual-filament wedge bulb, natural amber glass. 12V. | 4257NA |