Four Seasons 39656 A/C Expansion Valve - Rear

Four Seasons 39656 Expansion Valve for Nissan Rear A/C

The Four Seasons 39656 expansion valve is a block-type A/C flow restrictor built for rear HVAC service on select Nissan NV vans. It uses an aluminum body and O-ring style female fittings to support R134A systems with OE-style replacement requirements.

Four Seasons Expansion Valve 39656 is a direct-fit service part for rear air conditioning on the Nissan NV3500, NV2500, and NV1500. It meets or exceeds OEM requirements and is specified without a solenoid.

Key Features

• Block-type A/C expansion valve for rear HVAC systems
• Aluminum construction for serviceable durability
• R134A refrigerant type
• Female O-ring suction and liquid connections
• Mounting hole quantity: 2
• Super heat rating: 16.5
• OE-style replacement that meets or exceeds OEM requirements
• Four Seasons part number 39656

Product Details

This Four Seasons Expansion Valve 39656 regulates refrigerant flow into the rear evaporator on compatible Nissan NV applications. The valve uses No. 10 suction inlet, No. 12 suction outlet, No. 6 liquid inlet, and No. 8 liquid outlet thread diameters, all with female O-ring style connections. It is a block-type valve for R134A systems and is listed without a solenoid, making it a straightforward replacement for rear A/C service on 2012-2021 Nissan NV3500, 2012-2019 Nissan NV1500, and 2012-2019 Nissan NV2500 rear applications.

This part cross-references UAC EX10732C for the same application.

Common Problems This Part Can Address

• Rear A/C vent temperatures that stay too warm
• Erratic refrigerant metering at the rear evaporator
• Loss of cooling performance in the rear HVAC circuit
• Expansion valve restriction from wear or contamination
• Service replacement for a leaking or malfunctioning rear valve

Installation Notes and Tips

• Verify the vehicle uses a rear HVAC setup before ordering.
• Inspect O-rings, sealing surfaces, and line ends during installation.
• Recover refrigerant and evacuate the system before opening the A/C circuit.
• Confirm the system is charged with R134A refrigerant.
• Check for contamination in the lines and evaporator if the original valve failed from debris.

Quality Assurance

Four Seasons lists this expansion valve as meeting or exceeding OEM requirements. The aluminum construction and OE-style connection layout support accurate service replacement for rear A/C repair on Nissan NV vans.