![FL3Z-3A788-B Auto Check Valve Vacuum Hose Fit for Ford F-150 Expedition Lincoln Navigator 2017 2018 2019 2020 : Amazon.co.uk: Automotive FL3Z-3A788-B Auto Check Valve Vacuum Hose Fit for Ford F-150 Expedition Lincoln Navigator 2017 2018 2019 2020 : Amazon.co.uk: Automotive](https://m.media-amazon.com/images/I/61pUvgMA6VL._AC_UF894,1000_QL80_.jpg)
FL3Z-3A788-B Auto Check Valve Vacuum Hose Fit for Ford F-150 Expedition Lincoln Navigator 2017 2018 2019 2020 : Amazon.co.uk: Automotive
![What is the function of this hose on the 3.0? It looks mad crusty and I'd like to replace it… or is that necessary? If I should replace it, what's the part What is the function of this hose on the 3.0? It looks mad crusty and I'd like to replace it… or is that necessary? If I should replace it, what's the part](https://preview.redd.it/2ulszsurb7i81.jpg?width=640&crop=smart&auto=webp&s=be8202fcd3b50c59bebba0b1a4e38c413dbfa44b)
What is the function of this hose on the 3.0? It looks mad crusty and I'd like to replace it… or is that necessary? If I should replace it, what's the part
![Had to replace spark plugs and coils and this vacuum hose decides to snap in half. Any suggestions for repair? 2008 Ford Escape 3.0 V6 btw. : r/fordescape Had to replace spark plugs and coils and this vacuum hose decides to snap in half. Any suggestions for repair? 2008 Ford Escape 3.0 V6 btw. : r/fordescape](https://i.redd.it/s6ref4bm9pka1.jpg)