Four Seasons 39298 A/C Expansion Valve

Four Seasons 39298 Expansion Valve Overview

Four Seasons 39298 is a block-type A/C expansion valve for R134A systems, built from aluminum for direct HVAC service. It is specified for 1.5 ton applications and meets or exceeds OEM requirements, making it a practical replacement for Acura RDX and Acura CSX models that need precise refrigerant flow control.

The Four Seasons Expansion Valve line focuses on accurate metering at the evaporator inlet. For Acura RDX and Acura CSX A/C repair, part number 39298 helps restore stable system operation when the original valve is restricted, leaking, or no longer regulating superheat correctly.

Key Features

• Four Seasons Expansion Valve, part number 39298
• Block-type A/C expansion valve for R134A refrigerant systems
• Aluminum construction with aluminum finish
• Designed with captured O-ring insert fittings
• Female suction inlet and outlet connections, No. 12 thread diameter
• Female liquid inlet and outlet connections, No. 6 and No. 10 thread diameters
• Mounting hole quantity: 2
• Style: w/o solenoid
• Super heat setting: -3.500
• Meets or exceeds OEM specifications

Detailed Description

This Four Seasons 39298 A/C expansion valve regulates refrigerant flow into the evaporator so the HVAC system can maintain proper cooling performance. It uses captured O-ring, insert-style connections on both suction and liquid sides, with female fittings and aluminum construction suited to R134A service. The valve is listed for 1.5 ton applications and includes the specified O-ring configurations for the listed fitments. For Acura RDX and Acura CSX service work, this part number 39298 is a direct replacement option when the original expansion valve is no longer controlling refrigerant flow correctly.

This part cross-references Global Parts Distributors LLC 3411463 for the same application.

What It Helps Address

• Weak or inconsistent cabin cooling
• Incorrect refrigerant metering at the evaporator
• HVAC performance loss caused by a restricted expansion valve
• Temperature fluctuation during A/C operation
• System issues tied to a worn or failing valve in Acura RDX and Acura CSX applications

Installation Notes and Tips

Verify refrigerant type, fitting style, and mounting points before installation. This valve is specified for R134A systems and uses female captured O-ring connections, so matching the inlet and outlet sizes is important during service. Inspect the mating surfaces and replace damaged seals as needed during A/C repair. Confirm the system is properly evacuated and recharged after installation, and check operation across the listed Acura RDX and Acura CSX applications.

Quality Assurance

Four Seasons lists this expansion valve as meeting or exceeding OEM requirements. The aluminum construction and application-specific fitment support consistent service replacement for the listed vehicles.

• Fits 2007-2012 Acura RDX, N/A
• Fits 2006-2011 Acura CSX, N/A