Four Seasons 39689 A/C Expansion Valve

Four Seasons 39689 A/C Expansion Valve

The Four Seasons 39689 expansion valve is a block-type A/C flow restrictor built for R134A systems. It is engineered with aluminum construction and meets or exceeds OEM requirements for direct replacement service on select Chevrolet Bolt EV and Bolt EUV applications.

Key Features

• Block-type A/C expansion valve for R134A refrigerant systems
• Aluminum construction for HVAC service durability
• Liquid inlet: No. 6 O-ring
• Liquid outlet: No. 8 O-ring
• Suction inlet: No. 10 O-ring
• Suction outlet: No. 12 O-ring
• Style: w/o solenoid
• Super heat: -0.5
• Tonnage: 1
• Meets or exceeds OEM specifications

Detailed Description

Four Seasons 39689 is an A/C expansion valve designed for precise refrigerant flow control in vehicle HVAC systems. This block-type valve uses O-ring connections at the liquid and suction ports for service-friendly installation and is specified for R134A refrigerant. It is a direct-fit HVAC component for 2017-2023 Chevrolet Bolt EV and 2022-2023 Chevrolet Bolt EUV models, making it a relevant choice for Chevrolet Bolt EV expansion valve replacement and Chevrolet Bolt EUV A/C repair work. This part cross-references UAC EX10688C for the same application.

The Four Seasons Expansion Valve line is backed by more than 50 years of mobile A/C experience and is built around tested, application-focused replacement parts for automotive climate control systems. Part number 39689 is intended for technicians and owners who need a replacement expansion valve that aligns with OEM-level fit and function.

Common Issues This Part Can Help Address

• Incorrect refrigerant metering at the evaporator
• Weak or inconsistent cabin cooling
• Uneven A/C performance in R134A systems
• HVAC restriction issues related to a worn expansion valve
• Service replacement for a leaking or malfunctioning valve

Installation Notes and Tips

Verify refrigerant type, port sizes, and system configuration before installation. This valve uses O-ring connections and is listed without a solenoid, so confirm the original HVAC layout matches the replacement part. Replace seals as needed during A/C service, evacuate the system properly, and recharge to the vehicle manufacturer’s specifications after repair. Confirm fitment for 2017-2023 Chevrolet Bolt EV and 2022-2023 Chevrolet Bolt EUV before ordering part number 39689.

Quality Assurance

Four Seasons states that its products are engineered and tested for long service life and are backed by over 50 years of mobile A/C experience. Part number 39689 meets or exceeds OEM requirements for the listed applications.