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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 >> Cylinder Head, Rear Right Coolant Connection, Removing And Installing >> Removing

Cylinder Head, Rear Right Coolant Connection, Removing And Installing: Removing

-- Remove the After-Run Coolant Pump -V51-. Refer to ELECTRIC COOLANT PUMP, REMOVING AND INSTALLING .

Coolant connection with two connections

Fig 1: Right Coolant Pipe
GWWA19-12795Courtesy of AUDI OF AMERICA, LLC

-- Loosen the hose clamp -1- and remove the coolant hose from the coolant connection.

-- Remove the bolt -2- and remove the coolant connection -1-.

Fig 2: Coolant Connection At Rear Right Of Cylinder Head - Tightening Specifications
GWWA19-13728Courtesy of AUDI OF AMERICA, LLC
NOTE:

For clarity, the illustration above is showing the coolant connection without coolant connection hose to the power coolant pump.

Continuation for All

GWWA19-13729Courtesy of AUDI OF AMERICA, LLC

-- Mark the installation position of the components for reassembly or pay attention to existing markings on the components.

-- Loosen the hose clamp -2- and remove the coolant connection -3- from the coolant hose -1-.

NOTE:

As an example, the illustration shows the coolant connection with one connection and assembled power coolant pump.