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Home >> Audi >> 2025 >> S4 Premium >> Repair and Diagnosis >> Engine Mechanical >> Cooling System (Mechanical) >> Cooling System (6-Cylinder Direct Fuel Injection 2.9L; 3.0L 4V TFSI Engine) >> 19 Cooling System >> Coolant Pipes >> Coolant Pipes, Removing And Installing >> Small Right Rear Coolant Pipe, Removing And Installing, 2.9L Engine >> Removing

Small Right Rear Coolant Pipe, Removing And Installing, 2.9L Engine: Removing

-- Drain the coolant. Refer to COOLANT, DRAINING AND FILLING, 2.9L ENGINE .

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

-- Vehicles without particulate filter: loosen the screw-type clamp -1- and push the catalytic converter slightly to the side.

GWWA26-11921Courtesy of AUDI OF AMERICA, LLC

-- Vehicle with particulate filter: remove the right catalytic converter. Refer to CATALYTIC CONVERTER, REMOVING AND INSTALLING, 2.9L ENGINE WITH PARTICULATE FILTER .

-- Lift the clamp -2- and remove the coolant hose.

GWWA19-12742Courtesy of AUDI OF AMERICA, LLC

-- Remove the bolts -arrows- and the coolant pipe -1-.