Home >> Audi >> 2021 >> A4 Quattro Premium Plus, 2.0L Eng VIN B >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Air Conditioning >> 87 Air Conditioning >> Front Heater And A/C Unit >> Condensation Water Drain, Removing And Installing >> Condensation Water Drain, Removing And Installing, A4 And A5 >> Tightening Specifications