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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 (Refrigerant R134A Servicing) (2 Of 2) >> 87 Air Conditioning >> Refrigerant Circuit General Information >> Connections For Quick-Release Coupling On Refrigerant Circuit >> Service Connection Differences, Depending On Refrigerant (R134A Or R1234YF) >> Service Connection Dimensions

Service Connection Dimensions

Service Connection Dimensions -B- Refrigerant R134a Service Connection Refrigerant R1234yf Service Connection
High Pressure Side Low Pressure Side High Pressure Side Low Pressure Side
Outer diameter -D1- 16.0 mm 13.0 mm 17.0 mm 14.0 mm
Outer diameter -D2- 14.0 mm 11.0 mm 13.0 mm 12.0 mm
Section -L1- 4.6 mm 6.15 mm 9.0 mm 4.75 mm
Section -L2- 8.16 mm 9.16 mm 12.5 mm 7.2 mm
Valve installation position (not actuated) -C- 6.1 - 7.1 mm 6.1 - 7.1 mm 8.3- 9.3 mm 8.3- 9.3 mm