Four Seasons 39500 A/C Expansion Valve

Four Seasons 39500 Expansion Valve Overview

The Four Seasons 39500 expansion valve is a block-type A/C flow restrictor built for R134A systems and engineered for direct replacement use on select Cadillac and Chevrolet applications. It is an aluminum, OE-style expansion valve that meets or exceeds OEM requirements and is specified for 1.5 ton systems with a -4.4 super heat setting.

Use this Four Seasons expansion valve when servicing the air conditioning system on a 2016-2024 Chevrolet Camaro, 2013-2019 Cadillac ATS, or 2014-2019 Cadillac CTS. The 39500 part number is a direct reference for technicians and parts buyers looking for a precise HVAC replacement.

Key Features

• Four Seasons Expansion Valve, part number 39500
• Block-type A/C expansion valve for R134A refrigerant systems
• Aluminum construction with aluminum finish
• OE-style replacement that meets or exceeds OEM specifications
• Designed without a solenoid
• 2 mounting holes for secure installation
• Female sealing-washer connections on suction and liquid ports
• Specified for 1.5 ton HVAC applications

Detailed Description

The Four Seasons 39500 expansion valve regulates refrigerant flow into the evaporator to help maintain proper A/C performance and system balance. Its block-type design, aluminum body, and sealing-washer port styles support service work on R134A-equipped Cadillac ATS, Cadillac CTS, and Chevrolet Camaro models. The valve’s listed inlet and outlet sizes, along with its OE-matching design intent, make it a practical choice for restoring factory-style HVAC operation.

This part cross-references UAC EX10409C for the same application.

What It Helps Address

• Weak or inconsistent cabin cooling
• Incorrect refrigerant metering at the evaporator
• A/C performance loss caused by a worn expansion valve
• Temperature fluctuations during compressor cycling
• Service replacement needs on R134A HVAC systems

Installation Notes and Tips

Verify refrigerant type, port style, and mounting-hole alignment before installation. Confirm the vehicle uses the listed block-type expansion valve configuration and match the suction and liquid fitting sizes to the original part. After installation, evacuate and recharge the system according to factory service procedures and inspect for leaks at all sealing surfaces.

Quality Assurance

Four Seasons identifies this expansion valve as an OE-style replacement that meets or exceeds OEM requirements. The part is built for the specified application range and supports service-level restoration of factory A/C function on compatible Cadillac and Chevrolet models.