View Full Version : What size I/D is the coolant return line from the turbo?

01-01-2017, 05:24 PM
2001 A4 1.8T, I can't seem to find the size Inner Diameter for the cooling hose that runs over the timing cover (058121471B), to the hard pipe coming off of the radiator. I'm going to pick up heater hose to replace it, and I don't have time to wait for the new part to come in. Thanks in advance!

01-02-2017, 06:04 AM
Just measure the OD of the hard pipe that it connects to. Shouldn't be too hard to figure out.

01-05-2017, 09:17 AM
I used 3/8" ID hose iirc.

01-05-2017, 10:55 AM
I ended up getting some 3/8 fuel hose from a friend a few days ago, and that worked perfectly. Thank you though!