Porsche OEM Brake Booster Check Valve Upgrade for 2.7T

Genuine OEM Porsche brake booster check valve that is an upgrade for 2.7T cars for the connection of the brake booster to the firewall rubber gromet/bung.  

Fitment:

2000-2005 Audi S4, A6, Allroad 2.7T

NOTE: If your car has a connection off the brake booster hose for the MAF hose, you will need to delete that connection and run a MAF hose that does not have the hole provisioned for it.  Please email for more details if you do not understand.