![Heard a rattle under the car. Pulled onto the shoulder and found this loose. What function does it serve? : r/Whatisthis Heard a rattle under the car. Pulled onto the shoulder and found this loose. What function does it serve? : r/Whatisthis](https://preview.redd.it/heard-a-rattle-under-the-car-pulled-onto-the-shoulder-and-v0-4f34qajg5hcc1.jpeg?auto=webp&s=5a38cfdf229e910adbb4f413d3c41c6dd9ff477d)
Heard a rattle under the car. Pulled onto the shoulder and found this loose. What function does it serve? : r/Whatisthis
![rattle - 09 Mazda 6: Metallic rattling sound when accelerating at low speeds - Motor Vehicle Maintenance & Repair Stack Exchange rattle - 09 Mazda 6: Metallic rattling sound when accelerating at low speeds - Motor Vehicle Maintenance & Repair Stack Exchange](https://i.stack.imgur.com/XjTPa.jpg)
rattle - 09 Mazda 6: Metallic rattling sound when accelerating at low speeds - Motor Vehicle Maintenance & Repair Stack Exchange
![Is There a Rattling Noise Under Your Car When Going Over Bumps? This Could Be Why - In The Garage with CarParts.com Is There a Rattling Noise Under Your Car When Going Over Bumps? This Could Be Why - In The Garage with CarParts.com](https://www.carparts.com/blog/wp-content/webp-express/webp-images/doc-root/wp-content/uploads/2023/06/car-front-suspension-system-parts-close-up-1024x681.jpg.webp)