Four Seasons 39456 A/C Expansion Valve

Four Seasons 39456 Expansion Valve for Impala A/C Service

The Four Seasons 39456 expansion valve is a block-type A/C flow restrictor built for R134A systems and engineered for direct replacement service on select Chevrolet Impala applications. It is a metal-bodied, aluminum valve that helps regulate refrigerant flow through the evaporator circuit for stable cabin cooling performance.

Key Features

• Four Seasons Expansion Valve, part number 39456
• Block type A/C expansion valve for R134A refrigerant systems
• Aluminum construction with aluminum finish
• Meets or exceeds OEM requirements
• Designed without a solenoid
• Compatible with 1.5 ton HVAC applications
• Uses sealing-washer style inlet and outlet connections

Product Details

Four Seasons 39456 is part of the Expansion Valve line and is built for HVAC systems that require precise refrigerant metering at the evaporator. The valve uses female suction and liquid connections with sealing-washer interfaces, and its block-style layout supports service on vehicles that use this configuration. For shoppers searching for a Chevrolet Impala expansion valve or an A/C expansion valve for a 2012-2013 Chevrolet Impala or 2014-2015 Chevrolet Impala Limited, this part number provides a direct-fit replacement option. The Four Seasons 39456 expansion valve is also referenced under interchange part number EX10397C.

Common Problems This Part Can Address

• Inconsistent cabin cooling caused by improper refrigerant metering
• A/C performance loss from a worn or restricted expansion valve
• Evaporator flow control issues in R134A systems
• Temperature fluctuation during compressor cycling
• Service replacement needs on select Chevrolet Impala HVAC systems

Installation Notes and Tips

Verify the vehicle’s refrigerant type, connection style, and port sizes before installation. This valve uses sealing-washer style connections and is specified for R134A systems, so the rest of the A/C circuit should be inspected for contamination, damaged O-rings, or debris before reassembly. Confirm the application against the vehicle’s HVAC layout for 2012-2013 Chevrolet Impala and 2014-2015 Chevrolet Impala Limited models. Proper evacuation, leak checking, and recharge procedures are recommended after service.

Quality Assurance

Four Seasons 39456 is listed as meeting or exceeding OEM requirements, giving technicians and DIY buyers a replacement option built to match original system expectations for the specified Chevrolet Impala applications.