OP. I believe you mean the small pipe sticking up out of the lower intake? According to the electronic parts catalog, the lower intake (95-09 so all series 2 and 3 engines) that pipe is "a part" of that , so its not sold on its own oem. However, a series 3 shouldnt have any melting issues because the upper intake is made of metal Is yours rotted away or missing?
The dorman kits for the series 2 engines have a revised pipe that limits the melting to those intakes, you could probably just use1