What is it?

[FHP813]

Originally Posted by Mustang Kid

Yes. And once you take the metal clips off, you need a semi-special clip that releases the two hoses from each other.

Originally Posted by NoDrama43

The black plastic thingy is just a "tether" to keep the metal clip from getting lost.

I know what the lines are and how to disconnect them I just think its a lot of engineering to save a $3 part. It makes more sense that these things are put on the 2 lines at the assembly line to remind the installer to put on the clips so the line doesn't come apart. After that it serves no real purpose as the metal clip is holding the coupling together. Thanks for the responses.