Volkswagen GTI Turn Signal Bulb Size
The Volkswagen GTI turn signal requires bulb size 7440NA or H21W depending on the specific configuration of the lighting assembly. Data for the bulb sizes covers the range from 2015 to 2018.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
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 |
|---|---|---|---|
| 2023-2024 | 12174NA | 12174NA | Check Price |
| 2021 | 7440NA | WY21W | Check Price |
| 2019 | 7440NA (With Halogen Capsule Headlamps) | WY21W | Check Price |
| 2015-2018 | H21W (With HID Headlamps) | H21W | Check Price |
| 12174NA (With Halogen Capsule Headlamps) | 12174NA | Check Price | |
| 2010-2014 | 12180 | 12180 | Check Price |
| 2007-2009 | H21W (With HID Headlamps) | H21W | Check Price |
| 1156NA (With Halogen Capsule Headlamps) | PY21W | Check Price | |
| 2006 | H21W (With HID Headlamps) | H21W | Check Price |
| 3457NA (With Halogen Capsule Headlamps) | PY27/7W | Check Price |
Rear Turn Signal
| Years | US Type | EU Type | Shop |
|---|---|---|---|
| 2015-2018 | 7440 | W21W | Check Price |
| 2010-2014 | 7440NA | WY21W | Check Price |
| 2006-2009 | 1156 | P21W | Check Price |
Bulb Specifications
| Description | Type | Shop |
|---|---|---|
| OEM part number. Natural amber glass variant. 12V. | 12174NA | Check Price |
| ANSI standard (US & Canada). Single-filament wedge bulb (T20), natural amber glass. 12V, 21W. | 7440NA | Check Price |
| ECE standard (Europe & worldwide). Single-filament signalling bulb with BAY9s base. 12V, 21W. | H21W | Check Price |
| Philips part number. Halogen bulb, specialty application. 12V. | 12180 | Check Price |
| ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base, natural amber glass. 12V, 21W. | 1156NA | Check Price |
| ECE standard (Europe & worldwide). Single-filament amber bulb with BAU15s bayonet base. 12V, 21W. | PY21W | Check Price |
| ANSI standard (US & Canada). Dual-filament wedge bulb (T25), natural amber glass. 12V, 27W/7W. | 3457NA | Check Price |
| ANSI standard (US & Canada). Single-filament wedge bulb (T20). 12V, 21W. | 7440 | Check Price |
| ECE standard (Europe & worldwide). Single-filament signalling bulb with BA15s bayonet base. 12V, 21W. | P21W | Check Price |
| ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. 12V, 21W. | 1156 | Check Price |