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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 >> Coolant Ventilation Line To Cylinder Head, Removing And Installing >> Installing

Coolant Ventilation Line To Cylinder Head, Removing And Installing: Installing

Install in the reverse order of removal while noting the following:

Fig 1: Cylinder Bank 1 (Right) Coolant Ventilation Line, Installing
GWWA15-12131Courtesy of AUDI OF AMERICA, LLC

-- Tighten the bolt -1- to 9 Nm.

Fig 2: Cylinder Bank 2 (Left) Coolant Ventilation Line, Installing
GWWA15-12027Courtesy of AUDI OF AMERICA, LLC

-- Tighten the bolt -arrow- -3- to 9 Nm.

-- Check the coolant. Refer to Coolant Level, Checking .