Ford F-350 Super Duty Turn Signal Bulb Size
Ford F-350 Super Duty front and rear turn signal bulbs utilize multiple sizes including 194, 3157, 3157NA, 4157, 4257NA, 7443NA, and 7444NA, with inner, outer, and standard front positions requiring different bulb sizes. The replacement chart covers 1999 to 2023 model years and details bulb size specifications across the vehicle production range.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
Front Inner Turn Signal
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 |
|---|---|---|---|
| 2007-2010 | 3157NA (With Halogen Capsule Headlamps) | PY27/7W | Check Price |
| 4157 (With Sealed Beam Headlamps) | 4157 | Check Price |
Front Outer Turn Signal
| Years | US Type | EU Type | Shop |
|---|---|---|---|
| 2007-2010 | 194 | W5W | Check Price |
Front Turn Signal
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 |
|---|---|---|---|
| 2023 | 4257NA | PY27/7W | Check Price |
| 2021-2022 | 7444NA | WY21/5W | Check Price |
| 2018-2020 | 7444NA (With Halogen Capsule Headlamps) | WY21/5W | Check Price |
| 2017 | 7443NA (With Halogen Capsule Headlamps) | WY21/5W | Check Price |
| 2007-2016 | 3157NA | PY27/7W | Check Price |
| 2006 | 3157NA (With Halogen Capsule Headlamps) | PY27/7W | Check Price |
| 4157 (With Sealed Beam Headlamps) | 4157 | Check Price | |
| 2004-2005 | 3157NA (With Halogen Capsule Headlamps) | PY27/7W | Check Price |
| 3157 (With Sealed Beam Headlamps) | P27/7W | Check Price | |
| 1999-2003 | 3157 | P27/7W | Check Price |
Rear Turn Signal
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 |
|---|---|---|---|
| 2023 | 3157 | P27/7W | Check Price |
| 2021-2022 | 4257NA | PY27/7W | Check Price |
| 2017-2020 | 3157 (With Halogen Capsule Headlamps) | P27/7W | Check Price |
| 2007-2016 | 3157 | P27/7W | Check Price |
| 2006 | 4157 | 4157 | Check Price |
| 1999-2005 | 3157 | P27/7W | Check Price |
Bulb Specifications
| Description | Type | Shop |
|---|---|---|
| ANSI standard (US & Canada). Dual-filament wedge bulb (T25), natural amber glass. 12V, 27W/7W. | 3157NA | Check Price |
| ANSI standard (US & Canada). Dual-filament wedge bulb (T25). 12V, 27W/7W. | 4157 | Check Price |
| ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 3.78W. | 194 | Check Price |
| ECE standard (Europe & worldwide). Single-filament signalling bulb with W2.1x9.5d wedge base. 12V, 5W. | W5W | Check Price |
| ANSI standard (US & Canada). Dual-filament wedge bulb, natural amber glass. 12V. | 4257NA | Check Price |
| ANSI standard (US & Canada). Dual-filament wedge bulb (T20), natural amber glass. 12V, 21W/5W. | 7444NA | Check Price |
| ANSI standard (US & Canada). Dual-filament wedge bulb (T20), natural amber glass. 12V, 21W/5W. | 7443NA | Check Price |
| ANSI standard (US & Canada). Dual-filament wedge bulb (T25). 12V, 27W/7W. | 3157 | Check Price |