Four Seasons 86322 Engine Coolant Thermostat Housing

BMW Thermostat Housing with Thermostat

Four Seasons 86322 is an integrated engine coolant thermostat housing built for select BMW cooling system applications. It combines the thermostat and housing in one assembly for a direct replacement on covered vehicles, including BMW 535i, 535i xDrive, 535i GT, 535i GT xDrive, 535d, 535d xDrive, ActiveHybrid 5, 640i xDrive, and 740i.

Key Features

• Integrated thermostat housing assembly
• Thermostat included
• Plastic housing construction
• Inlet diameter: 1.51 in.
• Overall height: 5.35 in.
• Mounting flange width: 0.378 in.
• No gasket or seal included

Product Details

This Four Seasons thermostat housing, part number 86322, is part of the Thermostat Housing line and is engineered for engine coolant system service. The integrated design places the thermostat inside the housing for a single-unit replacement, helping restore proper coolant flow control in BMW cooling systems. Four Seasons states its cooling and mobile A/C products are engineered and tested for long service life, drawing on more than 50 years of experience in the category.

This part cross-references Gates 34781 for the same application. It also cross-references Stant 49602 for the same application.

What It Helps Address

• Coolant temperature regulation issues
• Cracked or aging plastic thermostat housing
• Thermostat-related cooling system faults
• Coolant flow control problems
• Service replacement on BMW engine coolant components

Installation Notes

Compatible With 2010-2017 BMW 535i GT, N/A, w/ Thermostat; Thermostat Housing. Compatible With 2011-2017 BMW 535i GT xDrive, N/A, w/ Thermostat; Thermostat Housing. Compatible With 2014-2016 BMW 535d, N/A, w/ Thermostat; Thermostat Housing. Compatible With 2014-2016 BMW 535d xDrive, N/A, w/ Thermostat; Thermostat Housing. Compatible With 2010-2016 BMW 535i, N/A, w/ Thermostat; Thermostat Housing. Compatible With 2010-2016 BMW 535i xDrive, N/A, w/ Thermostat; Thermostat Housing. Compatible With 2012-2016 BMW ActiveHybrid 5, N/A, w/ Thermostat; Thermostat Housing. Compatible With 2014-2015 BMW 640i xDrive, N/A, w/ Thermostat; Thermostat Housing. Compatible With 2013-2015 BMW 740i, N/A, w/ Thermostat; Thermostat Housing.

Verify the cooling system configuration before installation. Because no gasket or seal is included, reuse or replacement of sealing components should be confirmed separately during service.

Quality Assurance

Four Seasons backs this thermostat housing with product engineering and testing focused on dependable operation. The brand positions this line for repair work where a direct-fit cooling system component is needed for BMW applications.