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Four Seasons 39701 A/C Expansion Valve - Rear
| Brand | Four Seasons 39701 |
|---|---|
| Position | Rear |
| Material | Aluminum |
| Refrigerant Type | R1234yf |
| Type | Block type |
| Mounting Hardware Included | Yes |
| Description | Expansion valves |
| Liquid Inlet Size | No. 6 |
| Liquid Inlet Style | Sealing washer |
| Liquid Outlet Size | No. 8 |
| Liquid Outlet Style | Sealing washer |
| Meets / Exceeds OEM? | Yes |
| Style | W/o solenoid |
| Suction Inlet Size | No. 10 |
| Suction Inlet Style | Sealing washer |
| Suction Outlet Size | No. 10 |
| Suction Outlet Style | Sealing washer |
| Super Heat | -10.5 |
| Tonnage | 1.500 |
| Product line | Expansion Valve |
| Fits | Cadillac, Chevrolet, and GMC · 20 vehicles |
OE direct replacement. Meets or exceeds OEM requirements for dependable service.
Aluminum construction. Resists corrosion while keeping the valve lightweight.
Block type design. Provides precise refrigerant flow control for the A/C system.
Cross-references Four Seasons 39701, 217721 and 84689039 for the same application. See all 4.
Four Seasons 39701 Rear A/C Expansion Valve
Four Seasons 39701 is a rear A/C expansion valve for select Cadillac, Chevrolet, and GMC applications. Built as a block-type aluminum valve for R1234YF systems, it is designed to meter refrigerant flow accurately in rear HVAC circuits on vehicles such as the Cadillac Escalade, Chevrolet Tahoe, and GMC Yukon.
Key Features
- Block-type A/C expansion valve for rear HVAC service
- Aluminum construction for corrosion resistance and durability
- Configured for R1234YF refrigerant systems
- Liquid inlet: No. 6 with sealing washer style
- Liquid outlet: No. 8 with sealing washer style
- Suction inlet: No. 10 with sealing washer style
- Suction outlet: No. 10 with sealing washer style
- Meets or exceeds OEM requirements
- Mounting hardware included
- Super heat: -10.5; tonnage: 1.500
Product Details
Four Seasons Expansion Valve 39701 is part of the brand’s HVAC flow restrictor line, focused on precise refrigerant control for mobile air conditioning systems. This rear expansion valve uses a block-style design without a solenoid and is engineered for direct service on compatible rear A/C setups. It is a strong match for owners and technicians servicing rear climate control on 2021-2024 Cadillac Escalade and Escalade ESV, 2021-2024 Chevrolet Tahoe, and 2021-2024 GMC Yukon and Yukon XL, with additional 2025-2026 rear applications listed for the same platform family.
This part cross-references Monroe Shocks & Struts (e.g., 217721, 84689039) for the same application.
Common Problems This Part Can Address
- Rear A/C vent air that is warm or inconsistent
- Improper refrigerant metering in the rear HVAC circuit
- Expansion valve restriction from wear or contamination
- Loss of cooling performance in rear passenger zones
- Service replacement for a failed OEM-style rear valve
Installation Notes and Tips
Verify the vehicle’s refrigerant system uses R1234YF before installation. Confirm the liquid and suction line sizes and sealing washer connections match the existing rear HVAC plumbing. Replace sealing surfaces as needed, evacuate the system properly, and recharge to the manufacturer specification after installation. This valve is listed for rear position applications only.
Quality Assurance
Four Seasons states that its HVAC components are engineered and tested for long service life and backed by more than 50 years of mobile A/C experience. Part number 39701 is built to meet or exceed OEM requirements for the listed applications.
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 2024 | Cadillac | Escalade | Rear | Expansion Valve |
| 2024 | Cadillac | Escalade ESV | Rear | Expansion Valve |
| 2024 | Chevrolet | Tahoe | Rear | Expansion Valve |
| 2024 | GMC | Yukon | Rear | Expansion Valve |
| 2024 | GMC | Yukon XL | Rear | Expansion Valve |
| 2023 | Cadillac | Escalade | Rear | Expansion Valve |
| 2023 | Cadillac | Escalade ESV | Rear | Expansion Valve |
| 2023 | Chevrolet | Tahoe | Rear | Expansion Valve |
| 2023 | GMC | Yukon | Rear | Expansion Valve |
| 2023 | GMC | Yukon XL | Rear | Expansion Valve |
| 2022 | Cadillac | Escalade | Rear | Expansion Valve |
| 2022 | Cadillac | Escalade ESV | Rear | Expansion Valve |
| 2022 | Chevrolet | Tahoe | Rear | Expansion Valve |
| 2022 | GMC | Yukon | Rear | Expansion Valve |
| 2022 | GMC | Yukon XL | Rear | Expansion Valve |
| 2021 | Cadillac | Escalade | Rear | Expansion Valve |
| 2021 | Cadillac | Escalade ESV | Rear | Expansion Valve |
| 2021 | Chevrolet | Tahoe | Rear | Expansion Valve |
| 2021 | GMC | Yukon | Rear | Expansion Valve |
| 2021 | GMC | Yukon XL | Rear | Expansion Valve |
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