Brake Line Spring Clip
Brake hose/metal line fastener/anti-rattle clip with various uses on Vanagon and Eurovan.
The 803-611-715 and 4D0-611-715B brake line spring clips look a little different, but do the same thing. These are typically re-usable unless they are rusty or otherwise physically damaged. Before changing the short flexible brake hoses on your vehicle, please take a look at yours, and order the version that looks closest to what you have.