Four Seasons 39670 A/C Expansion Valve

Four Seasons 39670 A/C Expansion Valve

The Four Seasons 39670 expansion valve is a block-type A/C flow restrictor built for R134A systems. It is engineered from aluminum and meets or exceeds OEM requirements for direct replacement service on select Land Rover HVAC applications.

Four Seasons Expansion Valve products draw on more than 50 years of mobile A/C experience, with a focus on consistent refrigerant control and dependable operation in everyday repair work.

Key Features

• Block-type A/C expansion valve for refrigerant metering
• Aluminum construction for HVAC service durability
• Designed for R134A refrigerant systems
• Liquid inlet: No. 6 with sealing washer style
• Liquid outlet: No. 8 with O-ring style
• Suction inlet: No. 12 with O-ring style
• Suction outlet: No. 10 with sealing washer style
• Meets or exceeds OEM specifications
• Style: w/o solenoid
• Super heat: -10.0; tonnage: 1.000

Detailed Description

Four Seasons 39670 is an A/C expansion valve used to regulate refrigerant flow into the evaporator, helping maintain proper system pressure and cooling performance. This block-type valve is built for R134A applications and uses aluminum construction with OEM-style sealing interfaces for service replacement accuracy. It is a direct-fit option for 2019-2024 Land Rover Range Rover Evoque and 2022-2024 Land Rover Discovery Sport HVAC systems.

This part cross-references Monroe Shocks & Struts (e.g., 217690, 759891) for the same application. The Four Seasons 39670 part number is also commonly searched as a replacement A/C expansion valve for Land Rover Discovery Sport and Range Rover Evoque repairs.

What It Helps Fix

• Weak or inconsistent cabin cooling
• Incorrect refrigerant metering at the evaporator
• A/C pressure imbalance caused by a worn valve
• Cooling loss after HVAC service or component replacement
• System performance issues tied to a failing expansion valve

Installation Notes and Tips

Verify refrigerant type, line sizes, and sealing styles before installation. Replace damaged O-rings or sealing washers during service, and evacuate and recharge the system according to factory procedures after installation. Confirm the valve orientation and system cleanliness to help prevent repeat HVAC issues.

Quality Assurance

Four Seasons states that its HVAC components are engineered and tested for long service life and trouble-free operation. Backed by decades of mobile A/C experience, the 39670 is built to meet OEM-level expectations for repair work on Land Rover Range Rover Evoque and Land Rover Discovery Sport applications.