Four Seasons 39164 A/C Expansion Valve - Front

Four Seasons 39164 Expansion Valve Overview

Four Seasons 39164 is a block-type A/C expansion valve for R134A systems, built with an aluminum body and OE-style FIO insert O-ring connections. It is specified for 1.5 ton applications and uses a 2.000 super heat setting to regulate refrigerant flow across the evaporator.

For automotive HVAC service on vehicles such as Honda Civic and similar applications, this Four Seasons expansion valve is a direct-fit style replacement that meets or exceeds OEM requirements. The Four Seasons Expansion Valve line is focused on precise refrigerant metering for stable cabin cooling performance.

Key Features

• Part number 39164
• Block-type A/C expansion valve for R134A refrigerant
• Aluminum construction and aluminum finish
• FIO insert O-ring liquid and suction connections
• Female suction and liquid fittings with no threaded connection
• Meets or exceeds OEM specifications
• Designed without solenoid and without switch
• OE-style fitment details for service replacement work

Detailed Description

Four Seasons 39164 meters refrigerant into the evaporator to maintain proper A/C system balance and outlet temperature control. Its block-type design, aluminum housing, and insert O-ring ports are suited to R134A HVAC systems that require accurate flow restriction and consistent superheat control. The valve uses female suction inlet and outlet fittings, along with female liquid inlet and outlet fittings, to match the specified OE-style connection layout.

This part cross-references Pioneer Automotive Industries 759164 for the same application. If you are servicing an A/C system on a Honda Civic or another vehicle using this configuration, part number 39164 provides a focused replacement option for restoring refrigerant control in the HVAC circuit.

What It Helps Address

• Weak or inconsistent cabin cooling
• Improper refrigerant metering at the evaporator
• Temperature swings from an A/C system that is not regulating flow correctly
• HVAC performance issues tied to a worn expansion valve
• Service replacement needs for R134A A/C systems

Installation Notes and Tips

Confirm the system uses R134A refrigerant and verify the block-type valve layout, fitting sizes, and O-ring style before installation. Replace the valve only after the A/C system has been properly evacuated and inspected for contamination, leaks, or restricted flow. Match the suction and liquid port orientation to the original configuration, and verify all sealing surfaces are clean before reassembly.

For fitment-specific service, use the vehicle application details supplied for the exact year, make, and model. Part number 39164 is commonly searched for Honda Civic A/C expansion valve replacement and related HVAC repair work.

Quality Assurance

Four Seasons lists this expansion valve as meeting or exceeding OEM requirements, supporting OE-style service standards for automotive HVAC repair.