Calorstat TE7288.103J Engine Coolant Thermostat Housing Assembly

BMW Thermostat Housing Assembly

Calorstat TE7288.103J is an engine coolant thermostat housing assembly built with a black plastic housing, integrated gasket seal, and four outlet ports. It is specified to open at 217.0 degrees, making it a direct-fit cooling system service part for select BMW turbo and hybrid applications.

Key Features

• Engine coolant thermostat housing assembly for the cooling system
• Plastic housing with black finish
• Gasket or seal included for installation
• Gasket type: gasket
• Start to open temperature: 217.0
• Outlet port quantity: 4
• Fits select BMW 535i, 535i xDrive, 535i GT, 535i GT xDrive, ActiveHybrid 5, 640i xDrive, 640i xDrive Gran Coupe, and 740i applications

Product Details

This Calorstat thermostat housing assembly, part number TE7288.103J, is engineered for BMW cooling system service where a precise thermostat housing and sealing surface are required. The plastic construction and included gasket help support a clean replacement on vehicles such as the BMW 535i and BMW 535i xDrive, while the 217.0-degree opening specification matches the thermal control needs of the application. This part cross-references Gates 34781 for the same application.

Common Issues It May Address

• Coolant leaks at the thermostat housing
• Cracked or warped plastic housing
• Improper engine warm-up from thermostat housing wear
• Cooling system service needs on BMW 535i and BMW 740i models
• Sealing issues at the thermostat gasket interface

Installation Notes

Verify engine code and OE part number before installation. Inspect the mating surfaces, coolant hoses, and adjacent plastic fittings for wear or damage before reassembly. Because this housing uses four outlet ports, confirm hose routing and connector alignment match the original configuration on the vehicle. Proper coolant refill and bleeding procedures should be followed after installation.

Quality Assurance

Calorstat, also known as Vernet, is an OE supplier to BMW, and this part is built to meet the fitment and thermal control requirements of the listed applications. Compatible With 2010-2017 BMW 535i GT, 2011-2017 BMW 535i GT xDrive, 2011-2016 BMW 535i, 2011-2016 BMW 535i xDrive, 2012-2016 BMW ActiveHybrid 5, 2014-2015 BMW 640i xDrive, 2014-2015 BMW 640i xDrive Gran Coupe, and 2013-2015 BMW 740i.