This is a reproduction of the internal flap for the Air Control Box found in older 911 models. It is one of the components of the following assemblies:
911 571 049 07
911 571 050 07
901 571 345 32
901 571 050 32
 
The original was made from hard plastic which became brittle over time. We now manufacture a modern version from tough carbon fibre nylon which is much more durable.