Four Seasons 86243 Engine Coolant Water Outlet Housing Kit

BMW Engine Coolant Outlet Housing Kit

Four Seasons 86243 is an engine coolant water outlet housing kit built for BMW cooling system service. It includes the thermostat and uses a plastic housing design that meets or exceeds OEM requirements for direct-fit replacement on select BMW applications.

Use this outlet and thermostat housing kit when servicing the coolant outlet assembly on BMW models such as the M2, X6, and M4. The Four Seasons outlet / housing kit line is focused on engine coolant components for repair work that calls for OE-style fitment and function.

Key Features

• Part number: 86243
• Engine coolant water outlet housing kit with thermostat included
• Plastic housing construction
• Inlet diameter: 1.8 in.
• Overall height: 5.6 in.
• Meets or exceeds OEM specifications
• Gasket and seals not included
• Type: outlet and thermostat housing kit

Detailed Description

Four Seasons 86243 is an OE-style engine coolant outlet housing kit for BMW cooling system repair. It is built as a plastic outlet housing with the thermostat included, making it a direct replacement choice for vehicles that use an integrated thermostat and water outlet assembly. This part cross-references Genuine 11537598865 for the same application. The Four Seasons 86243 part number is also used in interchange listings for related replacement references, helping simplify sourcing for BMW coolant outlet service.

Compatible With BMW applications including 2016-2019 M2, 2015-2019 X6, 2017-2018 M140i, 2017-2018 M240i, 2017-2018 M240i xDrive, 2015-2018 M3, 2015-2018 M4, 2017-2018 M5, 2018 M550i xDrive, 2018 M6, 2018 M6 Gran Coupe, 2018 M760i xDrive, 2018 M760Li xDrive, 2014-2018 X5, 2014-2016 335i GT xDrive, 2014-2016 435i, 2015-2016 435i Gran Coupe, 2014-2016 435i xDrive, 2015-2016 435i xDrive Gran Coupe, 2014-2016 M135i, 2014-2016 M235i, 2015-2016 M235i xDrive, 2012-2015 335i, 2013-2015 335i xDrive, and 2013-2015 ActiveHybrid 3.

What It Helps Address

• Coolant outlet housing cracking or warping
• Thermostat housing service on BMW cooling systems
• Coolant leaks at the outlet assembly
• Temperature control issues tied to a worn thermostat
• Replacement of a damaged plastic coolant housing

Installation Notes and Tips

Confirm the inlet diameter, overall height, and OE reference before installation. Gasket and seals are not included, so reuse is not assumed and sealing components should be verified separately. Always inspect the mating surfaces, flush the cooling system as needed, and refill with the correct BMW-approved coolant after installation.

Quality Assurance

Four Seasons lists this outlet housing kit as meeting or exceeding OEM specifications for the stated applications. The part is built for direct replacement use in BMW engine coolant service and follows the brand’s engine coolant components focus.