Engine With Secondary Air System (Market Version)

The following components are visible from the left on the cylinder head between the engine cover and the air filter housing from above:

Fig 1: Secondary Air Injection Sensor 1 -G609-, Secondary Air Injection Solenoid Valve -N112- Component Location

Courtesy of AUDI OF AMERICA, LLC

2 -  Secondary Air Injection Sensor 1 -G609-

3 -  Secondary Air Injection Solenoid Valve -N112-