'98 A6 Quattro - Upper radiator hose t-connector
 

Hey all. I'm looking for an official "Audi name" and part number for the t-connector that connects the coolant hose coming up from the rear of the engine with the one coming from the coolant/expansion reservoir and the one (has the small hose and the larger hose) going towards the radiator. Seems to have become somewhat brittle and now the entire engine compartment is looking like holy-hedoublehockeysticks! It had "pa66-gf30" on one side, but I haven't had much luck searching with that number.

Thanks in advance.

Well, keep in mind this is for a 95. Also, there's no T-connector, as the hoses come as a single T-shape unit:

Upper hose = "Radiator Hose - Upper Radiator to Water Manifold to Expansion Tank; 4A0 121 101C"

good luck finding the right one for your car.

Probably this is what you're looking for (which it looks to be the same part as the previously mentioned one):

http://www.autohausaz.com/secure/Par...4A0121101C.jpg

Looks more like all this:

http://www.autopartswarehouse.com/po...SG9zZQ==&text=

The problem piece being the plastic t-piece connecting the three hoses that come together.

Did you ever find that t-piece? I am looking for it too.

Just buy a brass t-connector ANYWHERE and put it in. It's just a t-connector.

So mine broke on the highway. Sprayed coolant everywhere on that side of the engine, warning light came on of low coolant so I pulled over and shut it off. I got a ride to NAPA, picked up a brass t-connector, then headed over to our local Audi dealer to buy some coolant (which was CHEAPER than NAPA's alternative) and asked the guys if this t-connector would work. They looked at me with a weird look and were like....yeah, it's just a t-connector. I have about 7.5k on it now and it's never been an issue. I think it was a either 5/16" or 5/8" ?? obviously one will be either huge or way too small.

Thanks for the tip to look at napa. I did find a plastic 3/8 at home depot. but I will get a brass one instead.

T piece on Audi A6 cooling system
 

Whereas much of the web insists this piece is not available I managed to pick one up for about £10 from an Audi main agent! It is the plastic T piece that connects the collant pipes coming out of the expansion tank. Part Number is N 906-930-01 and it is described as Tpiece on their system, although there is no picture.:)

It seems this subject is always comming up. It's happened on my 2.8 and my 4.2, replaced both with brass T.