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Home >> Audi >> 2021 >> A8 e Quattro >> Repair and Diagnosis >> Engine Mechanical >> Blowers, Superchargers & Turbochargers >> Turbocharger, Supercharger [CZSE,CZSA] >> 21 Turbocharger, Supercharger >> Charge Air System >> Air Duct Pipe, Removing And Installing

Air Duct Pipe, Removing And Installing

Upper Air Duct Pipe, Removing 

-- Remove the engine cover. Refer to ENGINE COVER, REMOVING AND INSTALLING .

-- Remove the air filter housing. Refer to AIR FILTER HOUSING, REMOVING AND INSTALLING .

-- Disconnect the connectors -5- and free up the wires:

GWWA21-11320Courtesy of AUDI OF AMERICA, LLC

-- Loosen the hose clamps -arrow- and remove the air duct hoses.

-- Remove the bolts -1 and 3- and remove the air duct pipe -2- with the Throttle Valve Control Module -J338- -4-.

-- Free up the wiring harness.

GWWA24-11724Courtesy of AUDI OF AMERICA, LLC

-- Remove the bolts -arrows-.

-- Remove the crankcase ventilation hose -1- by pressing the release buttons on both sides.

-- Disconnect the connector -3- for the Intake Air Temperature Sensor - G42- /Manifold Absolute Pressure Sensor - G71- and free up the wires.

GWWA21-11321Courtesy of AUDI OF AMERICA, LLC

-- Disconnect the vacuum hose -4- and hose -2- for crankcase ventilation by pressing the retainers on both sides.

-- Remove the bolts -arrows- and remove the upper air duct pipe -1-.

Lower Air Duct Pipe, Removing 

GWWA21-11322Courtesy of AUDI OF AMERICA, LLC

-- Loosen the hose clamps -1 and 3- and remove the air guide hoses.

-- Remove the bolts -arrows- and the lower air duct pipe -2-.

Installing 

Install in reverse order of removal and note the following:

-- Install the air filter housing. Refer to AIR FILTER HOUSING, REMOVING AND INSTALLING .

-- Install the engine cover. Refer to ENGINE COVER, REMOVING AND INSTALLING .

Tightening Specifications