Is this a resonator?

[timski]

Hi Guys,

I hope this is the right place to post this. I have a part that is broken on my car and I'd like to replace it but I'm not entirely sure what it is called. I think it is a resonator. I found the following diagram on the internet and the part I am interested is labelled no 27. In the key to the diagram it refers to it as a resonator. Is that right? 

https://goo.gl/photos/1aFj3aR2gexLwSgWA

Thanks,
Tim.

[Toms306]

Does appear to be a resonator. I didn't realise the NA diesels had them though, thought it was only the GTi's lol.

[welshpug]

yes, it'll quieten it down a fair bit.