Thermostat Housing for BMW B48/B38 - 11537644811

High-quality replacement thermostat / heat management assembly designed for selected BMW vehicles equipped with B46 and B48 2.0L turbocharged petrol engines.

Engineered to help maintain the correct operating temperature, this unit supports efficient coolant flow, stable thermal management and reliable cooling-system performance.

Suitable for a wide range of BMW passenger and SUV applications, including selected 1 Series, 2 Series, 3 Series, 4 Series, 5 Series, 6 Series, 7 Series, X3 and X4 models.

Product Features

• Designed for selected BMW B46 and B48 2.0L engines
• Helps regulate engine operating temperature
• Supports efficient coolant circulation
• Designed to match original fitment specifications
• Durable housing construction
• Suitable for selected petrol and plug-in hybrid applications
• Ideal replacement for a worn or faulty thermostat / heat management unit

Vehicle Compatibility

BMW 1 Series

• F20 – 05/2014 to 06/2019
• F21 – 05/2014 to 06/2019

BMW 2 Series

• F22 – 06/2014 to 06/2017
• F22 – 09/2016 to 12/2019
• F23 – 06/2014 to 06/2017
• F23 – 09/2016 to 12/2019

BMW 3 Series

• F30 – 09/2014 to 10/2018
• F31 – 09/2014 to 06/2019
• F34 Gran Turismo – 09/2015 to 12/2019
• G20 – 01/2018 to 12/2019

BMW 4 Series

• F32 Coupe – 04/2015 to 02/2017
• F32 Coupe – 05/2016 to 12/2019
• F33 Convertible – 03/2015 to 02/2017
• F33 Convertible – 05/2016 to 12/2019
• F36 Gran Coupe – 05/2014 to 03/2017
• F36 Gran Coupe – 05/2016 to 12/2019

BMW 5 Series

• G30 – 10/2015 to 12/2019
• G31 Touring – 03/2016 to 06/2019

BMW 6 Series

• G32 Gran Turismo – 10/2016 to 06/2019

BMW 7 Series

• G11 – 12/2014 to 02/2019
• G12 Long Wheelbase – 12/2014 to 02/2019

BMW X Series

• G01 X3 – 10/2016 to 10/2019
• G02 X4 – 03/2017 to 07/2019

Compatible Engine Applications

This thermostat assembly is suitable for selected BMW models including:

• BMW F22 / F23 230i – B46 2.0L Turbo
• BMW F22 / F23 230i xDrive – B46 2.0L Turbo
• BMW F30 / F31 330i – B48 2.0L Turbo
• BMW F30 / F31 330i xDrive – B48 2.0L Turbo
• BMW F32 / F33 / F36 430i – B46 2.0L Turbo
• BMW F32 / F33 / F36 430i xDrive – B46 2.0L Turbo
• BMW G01 X3 xDrive30i – B46 2.0L Turbo
• BMW G02 X4 xDrive30i – B46 2.0L Turbo
• BMW G11 740e xDrive – B48 2.0L Plug-in Hybrid
• BMW G30 530e – B48 2.0L Plug-in Hybrid
• BMW G30 530e xDrive – B48 2.0L Plug-in Hybrid
• BMW G30 530i – B48 2.0L Turbo
• BMW G30 530i xDrive – B48 2.0L Turbo

Important: Difference Between 11537644811 and 11538642560

Please do not confuse 11537644811 with 11538642560.

Although both parts are BMW thermostat / heat management assemblies and may appear very similar, they are intended for different engine generations and vehicle applications.

11537644811

• Generally used on earlier-generation BMW B-series applications
• Commonly associated with selected B38, B46 and B48 engines
• More commonly found on earlier F-Series and some early G-Series vehicles
• Generally associated with earlier Gen 1 B-series cooling-system applications
• Not automatically suitable for later updated B48 applications

11538642560

• Generally used on later-generation BMW B46 / B48 applications
• Commonly associated with B48D, B46D and B46X-type engine applications
• More commonly found on later G-Series vehicles
• Represents a different application generation from earlier Gen 1 units
• Should also not be assumed to fit every still-later B46/B48 engine variant
• Uses a later application specification and should not be assumed to directly replace 11537644811

Important Fitment Warning

11537644811 and 11538642560 are not automatically interchangeable.

Even when the housings appear similar, differences in engine generation, internal specification, electrical connection and cooling-system configuration may affect compatibility.

Before purchasing, please confirm the original part number fitted to the vehicle, or provide the VIN number so compatibility can be checked correctly.

Do not order based on vehicle model, engine size, year or physical appearance alone.

Additional Fitment Information

BMW used different thermostat and heat management modules across the B46 and B48 engine range depending on:

• Engine generation
• Production date
• Vehicle specification
• Cooling-system configuration
• Connector and housing design

Before placing your order, please compare:

• Original part number
• Engine code
• Vehicle production date
• Connector design
• Physical appearance of the original unit

For the most accurate fitment confirmation, please provide your 17-digit VIN number before ordering.

Professional Installation Recommended

Installation should be carried out by a qualified automotive technician.

After replacement, the cooling system should be filled and bled correctly in accordance with BMW service procedures to ensure proper circulation and operation.