Ford F-250 Super Duty Turn Signal Bulb Size
Ford F-250 Super Duty front inner turn signal bulbs use 3157NA or 4157 sizes, front outer turn signal bulbs use 194 size, front turn signal bulbs use 7444NA, 7443NA, or 3157NA sizes, and rear turn signal bulbs use 3157, 4257NA, or 4157 sizes. The replacement chart covers vehicle production years spanning 1999 to 2023.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
Front Inner Turn Signal
| Years | Bulb Size |
|---|---|
| 2007-2010 | 3157NA (With Halogen Capsule Headlamps) |
| 4157 (With Sealed Beam Headlamps) |
Front Outer Turn Signal
| Years | Bulb Size |
|---|---|
| 2007-2010 | 194 |
Front Turn Signal
| Years | Bulb Size |
|---|---|
| 2021-2023 | 7444NA |
| 2019-2020 | 7444NA (With Halogen Capsule Headlamps) |
| 2018 | 7443NA (With Halogen Capsule Headlamps) |
| 2017 | 7444NA (With Halogen Capsule Headlamps) |
| 2007-2016 | 3157NA |
| 2006 | 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 |
|---|---|
| 2023 | 3157 |
| 2021-2022 | 4257NA |
| 2017-2020 | 3157 (With Halogen Capsule Headlamps) |
| 2007-2016 | 3157 |
| 2006 | 4157 |
| 1999-2005 | 3157 |
Bulb Specifications
| Description | Bulb Size |
|---|---|
| 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). 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). 12V, 27W/7W. | 3157 |
| ANSI standard (US & Canada). Dual-filament wedge bulb, natural amber glass. 12V. | 4257NA |