TT Roadster L4-1.8L Turbo (AWP) (2003)
17
Recirculating valve for turbocharger - N249-
18
Secondary Air Injection (AIR) Solenoid Valve -N112-
19
Crankcase ventilation
20
Secondary Air Injection (AIR) Pump Motor -V101-
21
Throttle Valve Control Module -J338-
22
Charge air cooler
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with Charge Air Pressure Sensor -G31-
23
Check-valve
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between EVAP canister and intake manifold
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Installation position (light/dark side): Arrow points in direction of aperture, as shown in figure.