Foam near N75 valve

Lotawood

Well-known member
Joined
Oct 17, 2017
Location
montana
TDI
2005 BHW Passat sedan
I am putting 2005 BHW back together after deleting the balance shaft assembly.
The foam that is under a cover fell apart. It's in between the timing belt and n75 valve.
I can't see what it would be filtering. Maybe it is for noise muffling? Is it necessary?
Thanks
 
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