| Clue | Source | Date |
|---|---|---|
| Car's waste tube (7,4) | ||
| Engine emission tube (7,4) | ||
| Muffler attachment on a car | LA Times Daily | 20 Jan 2025 |
| Said to be a tyring outlet for cars? (7,4) | ||
| Vehicle emission tube (7,4) | ||
| Generator emission tube (7,4) | ||
| Tube conveying gas out of an engine | The Guardian Quick | 23 Oct 2023 |
| Muffler attachment | USA Today | 01 Jun 2017 |
| Muffler attachment | ||
| Auto's pollution belcher | ||
| Stove attachment |