This is a specialized plug used on the EA839 engine family (the 2.9L and 3.0L V6 Turbocharged engines). Its primary purpose is to seal a machining access port or a secondary oil/coolant passage on the cylinder head that is not used for specific sensors or line attachments in certain configurations.
3.0T V6 and 2.9T V6 (Twin-Turbo) engines.
| Model | Typical Years |
| Audi S4 / S5 / SQ5 | 2018–2026 |
| Audi RS4 / RS5 | 2018–2026 |
| Audi A6 / A7 / A8 (3.0T) | 2019–2026 |
| Audi Q7 / Q8 (3.0T) | 2017–2026 |
| Porsche Cayenne / Macan / Panamera | 2017–2026 |
- Brand: Audi
- No applicable data -