You can mail order it. I just received them before I went to the dealer to get them as well. So I have an extra set as spare in the trunk.

Here are the part numbers:

Part #: 403-070-00-55
Product: INJECTOR END PLUG

You can re-use the plug. Just insert the old one into a new hose.

Part #: 615-476-03-26
Product: DIESEL FUEL HOSE

Do not hold me onto this one, I think the inside diameter is 4 mm.