Four Seasons 39606 A/C Expansion Valve

Four Seasons 39606 Expansion Valve

The Four Seasons 39606 A/C expansion valve is a block-type HVAC flow restrictor built for R134A systems. It is a direct-fit style replacement for select Chevrolet Colorado and GMC Canyon applications, with aluminum construction and sealing-washer connections for the liquid and suction lines.

Key Features

• Brand: Four Seasons Expansion Valve
• Part number: 39606
• Block type A/C expansion valve for R134A refrigerant
• Aluminum body construction
• Female suction inlet and outlet fittings
• Female liquid inlet and outlet fittings
• Sealing washer style connections on all ports
• 2 mounting holes
• 1.5 tonnage rating
• Meets or exceeds OEM requirements
• Style without solenoid

Product Details

Four Seasons 39606 is an HVAC expansion valve for vehicles using an R134A air conditioning system. It regulates refrigerant flow through the evaporator circuit and is specified as a block-type valve with No. 10 suction inlet, No. 12 suction outlet, No. 6 liquid inlet, and No. 8 liquid outlet thread diameters. The valve uses female fittings with sealing washers and is built to meet or exceed OEM specifications for service replacement on 2017-2022 Chevrolet Colorado and 2017-2022 GMC Canyon models. This part cross-references UAC EX51268C for the same application.

Common Repair Symptoms

• Uneven or restricted A/C cooling output
• Incorrect refrigerant metering at the evaporator
• Warm air from the vents during A/C operation
• Pressure imbalance in the air conditioning circuit
• Loss of cooling performance in Chevrolet Colorado or GMC Canyon HVAC systems

Installation Notes

Verify refrigerant type, port style, and thread sizes before installation. This valve is specified for R134A systems and uses sealing-washer connections, so mating surfaces should be clean and undamaged before assembly. Confirm the vehicle application and HVAC layout on 2017-2022 Chevrolet Colorado and GMC Canyon models before service. The part number 39606 is listed without a solenoid and without a switch.

Quality Assurance

Four Seasons lists this expansion valve as meeting or exceeding OEM requirements, making it a service-grade replacement for factory-style HVAC repair. The aluminum construction and application-specific port sizing support accurate fitment in the confirmed Colorado and Canyon applications.