Help! Engine Block Coolant Plug O-Ring
 

So I did a full gasket change on the car and i'm done but can't find the engine block coolant plug o-ring any where for the life of me. Tried my main parts spot, North Side Imports, and a whole bunch of Audi and VW dealers with no avail. I've read on different threads that you can just purchase a high temp o-ring from a hardware store or the likes. Has anybody done this? If so, what was the size and where did you find it? Any help would be great. I just want to get the beast up and running again before some major snow fall hits Chicago. Cheers!

Sizing the coolant drain O-ring...
 

Even though they may not physically have it, the dealers parts listing may have the size written in the part's description.

Good luck.

ive done the high temp o-ring, the one i used is made out of viton, it will outlast just about any other o-ring on this car. i dont remember where i found the dimentions, but try STFA, it should be here somewhere, or 12v.org

I used the following from Grainger. 11mm ID 17mm OD (3mm thickness)

http://www.grainger.com/Grainger/ORing-1RHW9

If you are referring to the plug in the block that requires the allen wrench to remove, the part number is N-904-520-02. List price $1.00. I know because I bought two so that I had a backup. I don't understand why so many people have trouble with their Audi dealer providing part numbers. I go in, they are friendly, they pull up the ETKA diagram and we select the part. If I have questions, they call in a mechanic to answer them. They order any piddly part I want, such as nuts and bolts, or plastic clips, no problem. I also confirmed Grillage's measurements - they are correct.

Thanks
 

Thanks everyone for chiming in on this. I was actually fortunate enough to have a VW/Audi parts guy go out of his way to call me back after he found some of the o-rings in the warehouse system as well at one of their other dealerships. By far the most helpful from all the parts guys i spoke too.

Hopefully the info you guys provided will help others searching down the road.

Cheers!