Four Seasons 39475 A/C Expansion Valve - Front

Four Seasons 39475 Expansion Valve

Four Seasons 39475 is a block-type A/C expansion valve for R134A systems, built with an aluminum body and OE-style O-ring connections. It is listed for Mercedes-Benz GLE, GLS, GL, and ML applications across 2012-2019 model years, including front-position and N/A-position HVAC configurations where specified.

Key Features

• Brand: Four Seasons Expansion Valve line
• Part number: 39475
• Block type A/C expansion valve for R134A refrigerant
• Aluminum construction and aluminum finish
• Female O-ring inlet and outlet connections
• Meets or exceeds OEM requirements
• Style: w/o solenoid
• Rated for 1.5 tonnage applications
• Includes OE-style green O-rings for the listed connection points

Product Details

The Four Seasons Expansion Valve line focuses on direct-fit HVAC flow control components for automotive air conditioning systems. Part number 39475 uses a block-style design with captured and female insert O-ring interfaces, helping maintain proper refrigerant metering in R134A-equipped systems. Connection sizing includes No. 10 and No. 12 suction fittings and No. 8 liquid fittings, with aluminum material selected for consistent fit and corrosion resistance in the HVAC circuit. This part cross-references Global Parts Distributors LLC 3411579 for the same application.

Compatible Mercedes-Benz coverage includes GLE350, GLE400, GLE43 AMG, GLE450, GLE500, GLE500e, GLE63 AMG, GLE63 AMG S, GLS450, GLS550, GLS63 AMG, GL350, GL450, GL550, GL63 AMG, ML250, ML350, ML400, ML500, ML550, and related diesel and AMG variants listed below. If you are replacing a Mercedes-Benz GLE expansion valve or a Mercedes-Benz GLS A/C expansion valve, this part number 39475 is matched to the documented vehicle applications.

Vehicle Fitment

• Fits 2016-2019 Mercedes-Benz GLE350, N/A
• Fits 2016-2019 Mercedes-Benz GLE400, N/A
• Fits 2017-2019 Mercedes-Benz GLE43 AMG, N/A
• Fits 2019 Mercedes-Benz GLE450, N/A
• Fits 2017-2019 Mercedes-Benz GLE500, N/A
• Fits 2018-2019 Mercedes-Benz GLE500e, N/A
• Fits 2016-2019 Mercedes-Benz GLE63 AMG, N/A
• Fits 2016-2019 Mercedes-Benz GLE63 AMG S, N/A
• Fits 2018-2019 Mercedes-Benz GLS450, N/A
• Fits 2018-2019 Mercedes-Benz GLS550, N/A
• Fits 2018-2019 Mercedes-Benz GLS63 AMG, N/A
• Fits 2018 Mercedes-Benz GLE550, N/A
• Fits 2016-2018 Mercedes-Benz GLE550e, N/A
• Fits 2016-2017 Mercedes-Benz GLE300d, N/A
• Fits 2016-2017 Mercedes-Benz GLE450 AMG, N/A
• Fits 2017 Mercedes-Benz GLS350d, Front
• Fits 2017 Mercedes-Benz GLS450, Front
• Fits 2017 Mercedes-Benz GLS500, Front
• Fits 2017 Mercedes-Benz GLS550, Front
• Fits 2017 Mercedes-Benz GLS63 AMG, Front
• Fits 2013-2016 Mercedes-Benz GL350, Front
• Fits 2016 Mercedes-Benz GL450, N/A
• Fits 2013-2016 Mercedes-Benz GL450, Front
• Fits 2013-2016 Mercedes-Benz GL550, Front
• Fits 2013-2016 Mercedes-Benz GL63 AMG, Front
• Fits 2016 Mercedes-Benz GLE350d, N/A
• Fits 2013-2015 Mercedes-Benz GL500, Front
• Fits 2015 Mercedes-Benz ML250, N/A
• Fits 2012-2015 Mercedes-Benz ML350, N/A
• Fits 2015 Mercedes-Benz ML400, N/A
• Fits 2015 Mercedes-Benz ML500, N/A
• Fits 2015 Mercedes-Benz ML550, N/A
• Fits 2012-2015 Mercedes-Benz ML63 AMG, N/A

Common Repair Symptoms

• Weak or inconsistent cabin cooling
• Incorrect refrigerant metering through the evaporator circuit
• Compressor cycling caused by HVAC flow restriction issues
• Uneven vent temperatures in Mercedes-Benz GLE, GLS, GL, or ML models
• Leak-related service needs at the expansion valve connection points

Installation Notes

Verify refrigerant type, connection style, and vehicle-specific HVAC routing before installation. Replace the valve only after the system has been properly evacuated and inspected, and confirm the O-ring sealing surfaces are clean and undamaged. Use the listed Mercedes-Benz application data for 2012-2019 vehicles to confirm the correct front or N/A-position configuration before reassembly.

Quality Assurance

Four Seasons lists this expansion valve as meeting or exceeding OEM requirements. The aluminum construction, OE-style O-ring interfaces, and application-specific fitment support accurate replacement for documented Mercedes-Benz HVAC service work.