Four Seasons 39698 A/C Expansion Valve - Rear

Rear A/C Expansion Valve for Volkswagen Atlas

Four Seasons 39698 is a block-type A/C expansion valve built for R134A systems and rear HVAC service. It is an aluminum OE-style replacement for the rear air conditioning circuit on the Volkswagen Atlas, with O-ring inlet and outlet connections for a direct service fit.

Four Seasons Expansion Valve 39698 is engineered and tested for dependable operation, drawing on more than 50 years of mobile A/C experience. It meets or exceeds OEM requirements and is specified for rear HVAC repair on the 2018-2025 Volkswagen Atlas.

Key Features

• Block-type A/C expansion valve for rear HVAC service
• Fits 2018-2025 Volkswagen Atlas, rear
• R134A refrigerant type
• Aluminum construction and aluminum finish
• O-ring liquid and suction connections
• No. 6 liquid inlet, No. 10 liquid outlet
• No. 8 suction inlet, No. 10 suction outlet
• Meets or exceeds OEM specifications
• Style: without solenoid
• Super heat setting: -0.5; tonnage: 1

Product Details

This Four Seasons expansion valve regulates refrigerant flow into the rear evaporator, helping maintain proper pressure drop and temperature control in the HVAC system. Part number 39698 is a direct-fit service component for the Volkswagen Atlas rear A/C circuit and is built with aluminum body construction and O-ring sealing surfaces for service replacement work. This part cross-references UAC EX10707C for the same application.

Common Repair Symptoms

• Rear A/C air is warm or inconsistent
• Refrigerant flow is restricted at the evaporator
• Cabin cooling performance drops in the rear HVAC zone
• System pressures are out of balance during A/C operation
• Expansion valve contamination or wear is affecting refrigerant metering

Installation Notes

Verify the vehicle uses R134A refrigerant and confirm the rear HVAC configuration before installation. Replace damaged O-rings and inspect the surrounding A/C lines, evaporator, and compressor operation to avoid repeat failures. Proper evacuation, leak checking, and recharge procedures are required after service. Confirm the No. 6, No. 8, and No. 10 connection sizes match the vehicle before assembly.

Quality Assurance

Four Seasons backs this expansion valve with engineering and testing focused on long-term, trouble-free operation. Part number 39698 is built to meet or exceed OEM standards for the 2018-2025 Volkswagen Atlas rear A/C application.