Motorad 1225-221 Engine Coolant Thermostat Housing Assembly

Integrated Thermostat Housing Assembly

This Motorad integrated housing thermostat is a standard replacement for BMW cooling system service. It combines the thermostat, housing, sensor, and seal in one assembly for confirmed applications, including BMW 330i, BMW 530i, and BMW X3 fitments.

• Standard replacement thermostat housing assembly for cooling system repair
• OE supplier manufacturing with OEM-quality materials and processes
• Copper case and wax compound for fast response to coolant temperature changes
• Electrical actuator with blade terminals and oval connector shape
• Gasket or seal included; gasket or seal required for installation

Fitment and Application Details

Compatible with BMW cooling system applications across 2016-2021 model years. Fits 2016-2019 BMW 330i, N/A; Fits 2016-2018 BMW 330e, N/A; Fits 2017-2020 BMW 530i, N/A; Fits 2018-2020 BMW 530e, N/A; Fits 2018-2019 BMW X3, N/A. This part number is 1225-221 and cross-references URO 11537644811 for the same application.

What It Helps Address

• Coolant temperature control that is slow to respond
• Thermostat housing leaks at the sealing surface
• Faults related to an integrated thermostat and sensor assembly
• Cooling system service on vehicles using an electrical thermostat design

Installation Notes and Quality

Verify connector style, port layout, and mounting pattern before installation. The assembly uses a disk valve type, O-ring gasket style, and six mounting holes, so matching the original configuration is important. Part number 1225-221 is manufactured to OEM specifications and processes by an OE supplier for consistent fit and function.