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ejenner
21-02-2023, 01:57 PM
Hi everybody. I'm looking for a part number for a 2005 Audi A6 C6 3.0 tdi exhaust downpipe gasket.

I've already bought one which I could use but I know it's not the right part as the holes aren't quite right.

If somebody could get me a P/N to search or a link to the correct part that'd be great!

Crasher
21-02-2023, 03:11 PM
The turbo to cat gasket is 4D0 253 115 A

https://digital-assets.tecalliance.services/images/3200/5e31fb949f6051aa9afb7d2799f4bea83d2bf8d3.jpg?ver=3 .65.0.384f7bb938

ejenner
21-02-2023, 03:51 PM
That's the one I've already got and it's not quite right. Where did you get the part number?

The holes will have to be elongated and it's debatable whether or not the centre diameter is a couple mm too small to clamp properly between the two parts. Basically the gasket is about 5% too small.

arman123
21-02-2023, 04:05 PM
38889could be 8D0253115C

ejenner
21-02-2023, 04:11 PM
Looks more likely. You just don't spot the minor differences easily until you're looking for them. It seems like the centre of this one is a bit larger if you look at them both closely.

Crasher
21-02-2023, 04:52 PM
What is the VIN?

ejenner
13-03-2023, 11:02 AM
38889could be 8D0253115C

I bought this one. The bolt holes are perfect but the centre bore is too large. I require a centre bore of about 60mm. The first one I got is 56mm and the second one is 74mm. The old gasket has flaked apart but what's left of it can be measured as 60mm centre.

Crasher
13-03-2023, 02:31 PM
What is the VIN?

?

ejenner
16-03-2023, 05:53 PM
What is the VIN?Using the reg / VIN didn't work previously.

I've gone for ELRING 422.900. It actually looks more like the original which is the flaky sandwich type gasket rather than the metal type. This Elring gasket is listed as compatible so third time lucky!

Crasher
17-03-2023, 09:42 AM
so third time lucky!

Yeh, been there, done that, got the T shirt and the collectors edition...

ejenner
17-03-2023, 10:15 AM
Yeh, been there, done that, got the T shirt and the collectors edition...

Not really something that's happened very often in my case. The first one I bought was a match to the car details. The second one was the one recommended above which fitted fine for the bolt pattern but the bore is wrong.

So I can't really understand how there could be so many wrong gaskets specified for the same car. I normally use the details of the car to order parts but in this case it's been quite challenging.

Crasher
17-03-2023, 11:01 AM
In ETKA the VIN lookup system is called "FI Suggestion" as it is not always accurate.

ejenner
24-03-2023, 10:00 AM
the new elring gasket arrived and it's much too small. I'm going to have to throw in the towel on this one. I'll use exhaust paste. It's a perfect case for exhaust paste, will work fine and I already have some in my drawer.