I'm looking for the battery cover in the engine compartment. It mounts vertically and is inserted into the front of the guide piece and separates the engine compartment from the battery area.
I believe its called "battery cover upper" P/N 7D0915437. If you have it how much do you want for it with shipping?
You can see an exploded diagram of what I'm looking for at the link below.
Look under Electrical systems there you will find the battery mounting battery protection cover section which will have exploded diagrams and associated part numbers.