Four Seasons 39617 A/C Expansion Valve - Front

Four Seasons 39617 Expansion Valve for Audi HVAC Service

Four Seasons 39617 is a block-type A/C expansion valve for R134A systems, built with an aluminum body and sealing-washer connections for a direct HVAC service replacement. It is specified for select Audi Q7, Q8, SQ8, RS Q8, SQ7, and related e-tron applications with front or listed N/A positions.

Key Features

• Four Seasons Expansion Valve line, part number 39617
• Block-type A/C expansion valve for R134A refrigerant systems
• Aluminum construction with aluminum finish
• Female suction and liquid fittings with sealing washer style connections
• No. 12 suction inlet and outlet thread diameter
• No. 8 liquid inlet and outlet thread diameter
• 2 mounting holes
• Meets or exceeds OEM requirements
• Style without solenoid
• 1.000 tonnage rating and -0.500 super heat

Product Details

The Four Seasons Expansion Valve brand line focuses on HVAC flow control components that regulate refrigerant delivery through the evaporator circuit. This Four Seasons 39617 expansion valve is a direct-fit style service part for Audi A/C systems using R134A, with female sealing-washer ports and a block-type layout that matches the listed applications. It cross-references UAC EX10629C for the same application.

Use Four Seasons 39617 when servicing Audi Q7, Audi Q8, Audi SQ8, Audi RS Q8, Audi SQ7, and Audi Q8 e-tron Sportback front or listed N/A HVAC configurations. The part number 39617 is also referenced in interchange listings for OE-style replacement sourcing.

Common Issues This Part Can Address

• Incorrect refrigerant metering at the evaporator
• Weak or inconsistent cabin cooling
• High-side or low-side pressure imbalance in the A/C circuit
• Expansion valve restriction from wear or contamination
• HVAC performance loss after A/C system service

Installation Notes

Verify refrigerant type, port style, and mounting-hole layout before installation. This valve is specified for R134A systems and uses female sealing-washer connections, so the mating surfaces should be clean and properly seated during assembly. Confirm the vehicle application by year, model, and position before replacing the original valve on Audi Q7, Q8, SQ8, RS Q8, SQ7, or Q8 e-tron variants.

Quality Assurance

Four Seasons 39617 is listed as meeting or exceeding OEM requirements for the specified applications. The part is built for HVAC service use in confirmed Audi fitments and follows the published dimensional and connection specifications for the application.