BMW Thermostats for BMW 3 Series G20 (2019+)

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BMW thermostats are known to fail, but luckily they typically fail wide open - meaning that your car can still cool. We offer thermostats from various OE suppliers we trust along with upgraded motorsport specific thermostats where applicable to make sure your BMW stays cool on track.
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Bremmen Parts - Corporate Logo
T#:36913362
Part#: 11538606278
In Stock
New Item
Sale - Save 25% $ 50.99
$ 38.24 USD
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Sale - Save 25% $ 50.99
$ 38.24 USD
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This junction heat hose, made from rubber, is prone to cracking, dry rot, and brittleness over time, often leading to coolant leaks at the front of the engine. Such leaks pose a significant risk to your engine’s health, as rapid coolant loss can cause overheating and severe damage.

Replace your worn or leaking heat hose with this high-quality OE replacement from Bremmen Parts. Engineered for a precise fit and long-lasting performance, this hose ensures a reliable repair and helps protect your engine from potential overheating.

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Genuine BMW - Corporate Logo
T#:546143
Part#: 11538606278
In Stock
Sale - Save 4% $ 72.99
$ 70.01 USD
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Sale - Save 4% $ 72.99
$ 70.01 USD
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Hose coming off the small fitting on the thermostat. Replacement coolant hose for damaged or worn items. Dont forget to change all associated parts when doing a cooling service, or to fix a leak.

Ina - Corporate Logo
T#:36201645
Part#: 11538642559
Back Ordered
New Item
$ 262.99 USD
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$ 262.99 USD
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Engineered specifically for BMW models, the electronic thermostat and coolant distribution module plays a vital role in the engine’s cooling system, adapting to changing temperatures for superior performance under all driving conditions. Whether on the track or the highway, this module ensures your BMW runs cooler, longer, and more efficiently.
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Genuine BMW - Corporate Logo
T#:617367
Part#: 11538642560
In Stock
Sale - Save 5% $ 394.99
$ 374.88 USD
Free Shipping on orders $49 and up
Sale - Save 5% $ 394.99
$ 374.88 USD
Free Shipping on orders $49 and up
Modern BMW thermostats are electronically controlled, allowing the DME/ECU to directly regulate coolant flow throughout the engine and its components. This system enables the thermostat to operate based on a broader range of temperature inputs, such as coolant, cylinder head, engine block, and oil temperatures, for more refined control of engine warm-up and temperature across diverse conditions. Unlike traditional thermostats, which simply open or close to permit coolant flow, this system uses a rotary valve for more dynamic control. The rotary valve adjusts to various positions, allowing for partial or full coolant flow to designated passageways as needed. This precision control helps your BMW's engine reach optimal temperatures quickly and ensures efficient heat management under various driving conditions.
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Genuine BMW - Corporate Logo
T#:617366
Part#: 11538642559
In Stock
Sale - Save 5% $ 434.99
$ 412.34 USD
Free Shipping on orders $49 and up
Sale - Save 5% $ 434.99
$ 412.34 USD
Free Shipping on orders $49 and up
Genuine BMW electronic thermostat that is controlled by the car's computer for optimal control over the engine and coolant's temperature.

Genuine BMW - Corporate Logo
T#:624783
Part#: 11539494424
In Stock
Sale - Save 6% $ 11.99
$ 11.26 USD
Free Shipping on orders $49 and up
Sale - Save 6% $ 11.99
$ 11.26 USD
Free Shipping on orders $49 and up
This preformed seal is an o-ring seal that seals the connection between the thermostat housing/heat management module and the engine block. This seal is the larger of two seals located on the side of the heat management module.
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Genuine BMW - Corporate Logo
T#:526204
Part#: 11538658572
In Stock
Sale - Save 12% $ 8.99
$ 7.91 USD
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Sale - Save 12% $ 8.99
$ 7.91 USD
Free Shipping on orders $49 and up
O ring that seals the thermostat to the coolant pump. New seals are a must when doing any repairs.

Genuine BMW - Corporate Logo
T#:624784
Part#: 11539494425
In Stock
Sale - Save 6% $ 11.99
$ 11.26 USD
Free Shipping on orders $49 and up
Sale - Save 6% $ 11.99
$ 11.26 USD
Free Shipping on orders $49 and up
This preformed seal is an o-ring seal that seals the connection between the thermostat housing/heat management module and the engine block. This seal is the larger of two seals located on the side of the heat management module.
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Genuine BMW - Corporate Logo
T#:222845
Part#: 11538658571
In Stock
Sale - Save 10% $ 12.99
$ 11.68 USD
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Sale - Save 10% $ 12.99
$ 11.68 USD
Free Shipping on orders $49 and up
Gasket that goes between the thermostat and radiator return pipe. Gaskets and seals are a wear item that should be replaced in conjunction with associated parts.
Genuine BMW Water Pump & Thermostat Kit - BMW B58C B58D (B58TU) ...
For models without the 48V Mild Hybrid package
Genuine BMW - Corporate Logo
T#:29333997
Part#: 11518482251KT
In Stock
Sale - Save 3% $ 681.99
$ 661.37 USD
Free Shipping on orders $49 and up
Sale - Save 3% $ 681.99
$ 661.37 USD
Free Shipping on orders $49 and up
If your water pump or thermostat has failed, this kit includes all the basic components needed to replace and restore your cooling system! Included: Water Pump Thermostat Housing (aka Heat Management Module) Coolant Outlet Pipe (L-Pipe) Gaskets & Seals
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Genuine BMW - Corporate Logo
T#:29333998
Part#: 11515A444F4KT
In Stock
Sale - Save 3% $ 681.99
$ 661.37 USD
Free Shipping on orders $49 and up
Sale - Save 3% $ 681.99
$ 661.37 USD
Free Shipping on orders $49 and up
If your water pump or thermostat has failed, this kit includes all the basic components needed to replace and restore your cooling system! Included: Water Pump Thermostat Housing (aka Heat Management Module) Coolant Outlet Pipe (L-Pipe) Gaskets & Seals
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Genuine BMW - Corporate Logo
T#:545300
Part#: 11538630023
Ships Jul 3, 2025
Sale - Save 3% $ 149.99
$ 145.31 USD
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Sale - Save 3% $ 149.99
$ 145.31 USD
Free Shipping
Coolant pipe that runs from the thermostat next to the engine block. Make sure your cooling system is working properly and leak free. When your in the tight spaces doing a service it makes sense to change all associated parts.
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