Four Seasons 39394 A/C Expansion Valve

Four Seasons 39394 Expansion Valve Overview

Four Seasons 39394 is a block-type A/C expansion valve for R134A systems, built with an aluminum body and OE-style fitment details. It is specified for 2.000 ton applications and uses a 8.500 super heat setting to regulate refrigerant flow through the HVAC system.

For service work on vehicles such as Honda Civic and similar applications that use this configuration, Four Seasons 39394 provides a direct replacement option that meets or exceeds OEM requirements.

Key Features

• Block-type A/C expansion valve for R134A refrigerant systems
• Aluminum construction with aluminum finish
• Female suction and liquid connections with FIO and insert O-ring styles
• 2 mounting holes for OE-style installation
• Meets or exceeds OEM specifications
• W/o solenoid design
• Includes OE-matched green O-ring service points by application specification

Detailed Description

The Four Seasons Expansion Valve line is built for precise refrigerant metering in automotive air conditioning systems. Part number 39394 is a block-type expansion valve with female inlet and outlet fittings, No. 8 suction inlet, No. 10 suction outlet, No. 6 liquid inlet, and No. 8 liquid outlet thread diameters. Its aluminum construction supports corrosion resistance and consistent service performance in R134A-equipped HVAC systems. This part cross-references Hygrade Tuneup 1668 for the same application.

Use Four Seasons 39394 when servicing an A/C system that requires controlled refrigerant expansion, stable evaporator feed, and OE-style connection geometry. It is a practical replacement for vehicles such as Honda Civic applications that call for this valve configuration, and the part number 39394 is commonly searched for HVAC repair and A/C flow restrictor replacement.

What This Part Helps Address

• Inconsistent evaporator refrigerant metering
• Weak cabin cooling caused by a restricted or worn expansion valve
• A/C performance issues tied to incorrect super heat control
• Leaks or service concerns at the valve connection points
• HVAC repair needs on R134A systems using a block-style valve

Installation Notes and Tips

Verify refrigerant type, fitting style, and thread sizes before installation. Replace the valve only after the system has been properly recovered, evacuated, and inspected for contamination or debris. Confirm the correct O-ring style and seating surfaces during assembly, and check for leaks after recharging the system. For fitment-specific service, match the vehicle’s original HVAC configuration before installing Four Seasons 39394.

Quality Assurance

Four Seasons 39394 is listed as meeting or exceeding OEM requirements, making it a direct-fit service part for applications that use this expansion valve design. The Four Seasons Expansion Valve line is focused on OE-style HVAC replacement parts for accurate refrigerant control and dependable service fitment.