Four Seasons 86264 Engine Coolant Water Outlet Housing Kit

Engine Coolant Outlet Housing Kit

Four Seasons 86264 is an engine coolant water outlet housing kit with thermostat included for BMW cooling system service. Built from plastic and made to meet or exceed OEM requirements, it is a direct-fit replacement for the thermostat and outlet housing assembly on select BMW models.

This Four Seasons outlet / housing kit is a practical choice when servicing a leaking or failing coolant outlet on BMW X1, X4, X5, X6, 135i, 135is, 335i, 335i xDrive, 335is, and 335d applications. Part number 86264 is designed around the original housing style and thermostat configuration for accurate replacement fitment.

Key Features

• Engine coolant water outlet housing kit with thermostat included
• Plastic housing construction
• Meets or exceeds OEM specifications
• Inlet diameter: 1.51 in.
• Overall height: 5.84 in.
• Style: with thermostat
• Gasket and seals not included

Product Details

Four Seasons 86264 is part of the Outlet / Housing Kit line and is built for cooling system repair where the thermostat and outlet housing are serviced together. The housing is engineered to match OEM-level fit and function, making it a suitable replacement for BMW coolant outlet assemblies that use this configuration. If you are searching for a BMW thermostat housing kit, engine coolant water outlet housing, or Four Seasons 86264 replacement, this part covers the core housing and thermostat assembly requirements.

This part cross-references Gates 34834 for the same application.

What It Helps Address

• Coolant leaks at the thermostat housing or outlet assembly
• Cracked or warped plastic coolant housing
• Thermostat-related temperature control issues
• Cooling system service on aging BMW engine coolant components
• Replacement of a worn water outlet housing on BMW X1, X4, X5, X6, 135i, 135is, 335i, 335i xDrive, 335is, and 335d models

Installation Notes and Tips

Verify the inlet diameter, overall height, and thermostat housing style against the original part before installation. Because gasket and seals are not included, reuse is not recommended if the original sealing components are worn or damaged. Always inspect the cooling system for related wear, flush contaminated coolant as needed, and refill according to BMW service procedures after installation.

Compatible With: Fits 2011-2015 BMW X1, N/A; Fits 2015 BMW X4, N/A; Fits 2011-2014 BMW X6, N/A; Fits 2011-2013 BMW 135i, N/A; Fits 2013 BMW 135is, N/A; Fits 2011-2013 BMW 335i, N/A; Fits 2011-2013 BMW 335i xDrive, N/A; Fits 2011-2013 BMW 335is, N/A; Fits 2011-2013 BMW X5, N/A; Fits 2011 BMW 335d, N/A.

Quality Assurance

Four Seasons states that this part meets or exceeds OEM requirements, supporting OE-style fit and function for the listed BMW applications. Part number 86264 is built as a direct replacement cooling system component for service work on the specified vehicles.