Four Seasons 38685 A/C Expansion Valve

Four Seasons 38685 Expansion Valve for Porsche A/C

Four Seasons 38685 is a block-type A/C expansion valve for R134A systems, built with an aluminum body and OE-style fitment details. It is listed for Porsche 911 and Porsche 928 applications, including 1991-1998 Porsche 911 and 1986-1991, 1993-1995 Porsche 928.

Key Features

• Four Seasons Expansion Valve line, part number 38685
• Block-type A/C expansion valve for R134A refrigerant
• Aluminum construction with aluminum finish
• Two mounting holes for direct system attachment
• Female FIO insert O-ring liquid and suction connections
• Meets or exceeds OEM specifications
• Set for 2.000 tonnage systems with 5.000 super heat
• Fits Porsche 911 and Porsche 928 A/C service applications

Product Details

This Four Seasons expansion valve meters refrigerant flow into the evaporator to help maintain proper A/C performance in Porsche 911 and Porsche 928 systems. The 38685 uses female insert O-ring fittings, No. 6 liquid inlet, No. 8 liquid outlet, and No. 10 suction connections, with the valve configured without a solenoid. Four Seasons 38685 also cross-references Monroe Shocks & Struts 182321 for the same application.

What It Helps Address

• Inconsistent cabin cooling on Porsche 911 and Porsche 928 A/C systems
• Restricted refrigerant metering at the evaporator
• Improper superheat control in R134A HVAC service
• Leaking or worn expansion valve connections
• Service replacement for OE-style A/C flow control

Installation Notes

Verify the vehicle’s refrigerant type, line sizes, and fitting style before installation. This valve uses insert O-ring connections and two mounting holes, so the existing A/C plumbing and mounting points should be matched carefully during service. Confirm the system is clean and properly evacuated before recharging.

Quality Assurance

Four Seasons 38685 is built to meet or exceed OEM requirements for the listed Porsche applications. The Four Seasons Expansion Valve line is used for replacement service where accurate refrigerant control and OE-style fitment are required.