Four Seasons 38631 A/C Expansion Valve

Four Seasons 38631 Expansion Valve

The Four Seasons 38631 A/C expansion valve is a TXV-style HVAC flow restrictor built for R134A systems. It uses a brass body and an 8.0 super heat setting to regulate refrigerant flow at the evaporator for stable air conditioning performance.

Key Features

• Brand: Four Seasons Expansion Valve
• Part number: 38631
• TXV design for controlled refrigerant metering
• Brass construction
• Refrigerant type: R134A
• Super heat setting: 8.0
• Direct-fit application coverage for select Honda models

Application Details

This Four Seasons 38631 expansion valve is used in select Honda A/C systems, including 1990-1993 Honda Accord, 1992-1995 Honda Prelude, 1992-1993 Honda Civic, and 1993 Honda Civic del Sol. It is listed for Sanden, Nippondenso, and Matsushita system configurations where noted, making it a focused replacement for common Honda Accord, Honda Civic, Honda Prelude, and Civic del Sol HVAC service needs.

This part cross-references UAC EX7010FC for the same application.

What It Helps Address

• Erratic evaporator refrigerant metering
• Weak or inconsistent cabin cooling
• Expansion valve restriction from wear or contamination
• Service replacement for R134A-based Honda A/C systems
• HVAC performance issues tied to incorrect super heat control

Installation Notes

Verify the vehicle year, model, and A/C system type before installation. Match the original valve style and refrigerant specification to the existing setup, and inspect the system for contamination or debris before replacing the valve. Proper evacuation, leak checking, and recharge procedures are required after service.

Quality Assurance

Four Seasons supplies HVAC service parts for automotive air conditioning repair, and this expansion valve is built to meet the listed application and refrigerant requirements.