Four Seasons 39586 A/C Expansion Valve - Rear
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Four Seasons
 Expansion Valve

Four Seasons 39586 A/C Expansion Valve - Rear

Brand Four Seasons 39586
Position Rear
Color Aluminum
Description Expansion Valves
Liquid Inlet Fitting Gender Female
Liquid Inlet Fitting Thread Diameter No. 8
Liquid Inlet Size IN 0.540
Liquid Inlet Size MM 13.8
Liquid Inlet Style O-Ring
Liquid Inlet Thread Type Not Threaded
Liquid Inlet Type O-Ring
Liquid Outlet Fitting Gender Female
Liquid Outlet Fitting Thread Diameter No. 8
Liquid Outlet Style Captive O-Ring
Liquid Outlet Thread Type Not Threaded
Liquid Outlet Type O-Ring
Lqd Out Size IN 0.540
Lqd Out Size MM 13.6
Material Aluminum
Meets / Exceeds OEM? Yes
Mounting Hole Quantity 2
O-Ring A Number/Desc [23680] / Green O-Ring
O-Ring B Number/Desc [24608] / Green O-Ring
O-Ring C Number/Desc [24150] / Green O-Ring
O-Ring D Number/Desc [24610] / Green O-Ring
Refrigerant Type R134A
Style w/ Solenoid
Suc In Size IN 0.650
Suc In Size MM 16.4
Suc Out Size IN 0.710
Suc Out Size MM 18.000
Suction Inlet Fitting Gender Female
Suction Inlet Fitting Thread Diameter No. 10
Suction Inlet Style Captive O-Ring
Suction Inlet Thread Type Not Threaded
Suction Inlet Type O-Ring
Suction Outlet Fitting Gender Female
Suction Outlet Fitting Thread Diameter No. 12
Suction Outlet Style O-Ring
Suction Outlet Thread Type Not Threaded
Suction Outlet Type O-Ring
Super Heat -1.500
Switch Included? Not Included
Tonnage 1.5
Type Block Type
Product line Expansion Valve
Fits BMW · 75 vehicles

OE direct replacement. Meets or exceeds OEM requirements for a confident fit.

Aluminum block type. Lightweight construction with captive O-ring connections.

Solenoid-equipped design. Built for precise refrigerant flow control in the system.

Cross-references Four Seasons 39586, UAC EX9781C and 217603 for the same application. See all 6.

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Four Seasons 39586 Expansion Valve for BMW Rear HVAC

Four Seasons 39586 is a block-type A/C expansion valve for rear HVAC systems that use R134A refrigerant. Built from aluminum and engineered to meet or exceed OEM requirements, it supports precise refrigerant metering for BMW rear air conditioning applications.

This Four Seasons Expansion Valve line is focused on OE-style HVAC flow control, and part number 39586 is specified for rear-position BMW applications where accurate superheat control matters. It is a direct-fit style replacement for select BMW 740i, 750i, M5, and related models.

  • Brand: Four Seasons Expansion Valve
  • Part number: 39586
  • Block-type A/C expansion valve
  • Aluminum construction
  • For R134A refrigerant systems
  • Style with solenoid
  • Female O-ring connections
  • Meets or exceeds OEM requirements
  • Designed for rear HVAC applications on select BMW models

Detailed Product Overview

Four Seasons 39586 regulates refrigerant flow into the evaporator to help maintain stable outlet temperatures and proper system balance. The valve uses aluminum housing, O-ring sealing surfaces, and the listed inlet and outlet dimensions to match the original HVAC layout on supported BMW vehicles. Cross-reference part numbers include UAC EX9781C and OE-style references such as 64119170992 for the same application.

Compatible With BMW rear HVAC applications including 2015-2019 BMW 740i, 2017-2019 BMW 740i xDrive, 2015-2019 BMW 750i, 2015-2019 BMW 750i xDrive, 2011-2019 BMW 750Li xDrive, 2015-2018 BMW 750Li, 2011-2012 BMW 750Li, 2011-2015 BMW 760Li, 2013-2015 BMW ActiveHybrid 7, 2017-2018 BMW M3, 2017-2018 BMW M4, 2017-2018 BMW M5, and other listed rear-position BMW fitments.

What This Part Helps Address

  • Inconsistent rear cabin cooling
  • Restricted refrigerant metering at the evaporator
  • Warm air from the rear HVAC system
  • Improper superheat control in R134A systems
  • Leak-prone or worn expansion valve sealing surfaces

Installation Notes and Tips

Verify the vehicle’s refrigerant type, mounting location, and connection style before installation. This valve uses female O-ring fittings with the listed inlet and outlet sizes, so matching the original BMW HVAC configuration is important for proper sealing and operation. Always evacuate and recharge the system according to factory service procedures after replacement.

Fits 2015-2019 BMW 740i, Rear; fits 2017-2019 BMW 740i xDrive, Rear; fits 2015-2019 BMW 750i, Rear; fits 2011-2012 BMW 750i, Rear; fits 2015-2019 BMW 750i xDrive, Rear; fits 2011-2012 BMW 750i xDrive, Rear; fits 2011-2019 BMW 750Li xDrive, Rear; fits 2019 BMW M760i xDrive, N/A; fits 2018 BMW 740e xDrive, Rear; fits 2015-2018 BMW 750Li, Rear; fits 2011-2012 BMW 750Li, Rear; fits 2017-2018 BMW M140i, Rear; fits 2017-2018 BMW M2, Rear; fits 2017-2018 BMW M240i, Rear; fits 2017-2018 BMW M240i xDrive, Rear; fits 2017-2018 BMW M3, Rear; fits 2017-2018 BMW M4, Rear; fits 2017-2018 BMW M5, Rear; fits 2018 BMW M550i xDrive, Rear; fits 2017-2018 BMW M6, Rear; fits 2017-2018 BMW M6 Gran Coupe, Rear; fits 2017-2018 BMW M760i xDrive, Rear; fits 2017-2018 BMW M760Li xDrive, Rear; fits 2015 BMW 740Ld xDrive, Rear; fits 2015 BMW 740Li, Rear; fits 2011-2012 BMW 740Li, Rear; fits 2015 BMW 740Li xDrive, Rear; fits 2011-2015 BMW 760Li, Rear; fits 2013-2015 BMW ActiveHybrid 7, Rear.

Quality Assurance

Four Seasons manufactures HVAC service parts to OE-style specifications, and this expansion valve is listed as meeting or exceeding OEM requirements for the supported BMW applications.

Related reading

This part fits 75 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelPositionNotes
2019BMW740iRearExpansion Valve
2019BMW740i xDriveRearExpansion Valve
2019BMW750iRearExpansion Valve
2019BMW750i xDriveRearExpansion Valve
2019BMW750Li xDriveRearExpansion Valve
2019BMWM760i xDriveN/AExpansion Valve
2018BMW740e xDriveRearExpansion Valve
2018BMW740iRearExpansion Valve
2018BMW740i xDriveRearExpansion Valve
2018BMW750iRearExpansion Valve
2018BMW750i xDriveRearExpansion Valve
2018BMW750LiRearExpansion Valve
2018BMW750Li xDriveRearExpansion Valve
2018BMWM140iRearExpansion Valve
2018BMWM2RearExpansion Valve
2018BMWM240iRearExpansion Valve
2018BMWM240i xDriveRearExpansion Valve
2018BMWM3RearExpansion Valve
2018BMWM4RearExpansion Valve
2018BMWM5RearExpansion Valve
2018BMWM550i xDriveRearExpansion Valve
2018BMWM6RearExpansion Valve
2018BMWM6 Gran CoupeRearExpansion Valve
2018BMWM760i xDriveRearExpansion Valve
2018BMWM760Li xDriveRearExpansion Valve
2017BMW740iRearExpansion Valve
2017BMW740i xDriveRearExpansion Valve
2017BMW750iRearExpansion Valve
2017BMW750i xDriveRearExpansion Valve
2017BMW750LiRearExpansion Valve
2017BMW750Li xDriveRearExpansion Valve
2017BMWM140iRearExpansion Valve
2017BMWM2RearExpansion Valve
2017BMWM240iRearExpansion Valve
2017BMWM240i xDriveRearExpansion Valve
2017BMWM3RearExpansion Valve
2017BMWM4RearExpansion Valve
2017BMWM5RearExpansion Valve
2017BMWM6RearExpansion Valve
2017BMWM6 Gran CoupeRearExpansion Valve
2017BMWM760i xDriveRearExpansion Valve
2017BMWM760Li xDriveRearExpansion Valve
2016BMW740iRearExpansion Valve
2016BMW750iRearExpansion Valve
2016BMW750i xDriveRearExpansion Valve
2016BMW750LiRearExpansion Valve
2016BMW750Li xDriveRearExpansion Valve
2015BMW740iRearExpansion Valve
2015BMW740Ld xDriveRearExpansion Valve
2015BMW740LiRearExpansion Valve
2015BMW740Li xDriveRearExpansion Valve
2015BMW750iRearExpansion Valve
2015BMW750i xDriveRearExpansion Valve
2015BMW750LiRearExpansion Valve
2015BMW750Li xDriveRearExpansion Valve
2015BMW760LiRearExpansion Valve
2015BMWActiveHybrid 7RearExpansion Valve
2014BMW750Li xDriveRearExpansion Valve
2014BMW760LiRearExpansion Valve
2014BMWActiveHybrid 7RearExpansion Valve
2013BMW750Li xDriveRearExpansion Valve
2013BMW760LiRearExpansion Valve
2013BMWActiveHybrid 7RearExpansion Valve
2012BMW740LiRearExpansion Valve
2012BMW750iRearExpansion Valve
2012BMW750i xDriveRearExpansion Valve
2012BMW750LiRearExpansion Valve
2012BMW750Li xDriveRearExpansion Valve
2012BMW760LiRearExpansion Valve
2011BMW740LiRearExpansion Valve
2011BMW750iRearExpansion Valve
2011BMW750i xDriveRearExpansion Valve
2011BMW750LiRearExpansion Valve
2011BMW750Li xDriveRearExpansion Valve
2011BMW760LiRearExpansion Valve
Directly replaces or cross-references 6 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Four Seasons — 39586UAC — EX9781C21760375979664119170992A17604