BMW Thermostats for BMW 4 Series F32 (2014+)

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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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Water Pump And Thermostat Kit - BMW N55 F Chassis
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T#:39093005
Part#: 11518635090KT6
Ships on Jun 30, 2026
Sale - Save 8% $ 470.99

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$ 432.90 USD
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$ 470.99

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$ 432.90 USD
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Water Pump And Thermostat Kit - BMW N55 F Chassis

Ensure optimal engine cooling and performance with this high-quality Water Pump And Thermostat Kit - BMW N55 F Chassis. In the mid-2000s, BMW introduced electronically controlled water pumps and thermostats for better temperature regulation and efficiency. However, these components tend to have a shorter lifespan compared to traditional mechanical designs, often failing before BMW’s recommended 80,000-mile service interval.

This complete kit from Turner Motorsport includes premium-quality components that match OEM specifications, providing reliable and efficient cooling system performance. Maintaining a properly functioning cooling system helps prevent overheating, enhances efficiency, and extends engine life.

Signs Your Water Pump and Thermostat May Need Replacement:

  • Engine overheating or failing to reach operating temperature
  • Water pump running intermittently or erratically
  • Cooling fans operating at maximum output
  • Engine fault codes, including 20A804

Upgrade your BMW N55 F Chassis cooling system with this all-in-one kit for worry-free performance and longevity.

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BMW N54 N55 S55 Mosselman Thermostat Installation Kit
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T#:4799665
Part#: THERMINSTALLKT
In Stock
$ 22.99 USD
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BMW N54 N55 S55 Mosselman Thermostat Installation Kit is designed to ensure a seamless installation of the Mosselman thermostat on BMW engines. This comprehensive kit from Turner Motorsport includes all necessary gaskets and components, guaranteeing a reliable and precise installation for optimal engine performance.

  • Complete Kit: Includes all essential gaskets and components required for a hassle-free thermostat installation.
  • Optimal Performance: Ensures proper installation of the Mosselman thermostat, leading to improved engine cooling efficiency and performance.
  • High-Quality Components: Gaskets and parts are manufactured to meet high standards of durability and reliability.
  • Precision Fit: Engineered to match OEM specifications, providing a perfect fit and reliable performance.
  • Ease of Installation: All necessary parts are included, simplifying the installation process and reducing the need for additional purchases.

Upgrade your BMW's cooling system with the Mosselman Thermostat Installation Kit from Turner Motorsport, ensuring a top-quality, reliable setup for your engine.

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Thermostat Replacement Kit - E82 E9X E84 E70 E71 With N55 Engines ...
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Packaged by Turner - Corporate Logo
T#:554075
Part#: 11537601158KT2
Ships on Jul 7, 2026
Sale - Save 25% $ 106.99

This product was last offered at the strikethrough price on
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$ 79.77 USD
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$ 106.99

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If your vehicle is experiencing cooling issues, chances are the thermostat is the cause. Common symptoms include prolonged warm-up at highway speeds from the thermostat being stuck open, or consistent overheating issues from the thermostat being stuck in the closed position. Either condition can result in poor performance, and potential damage to vital components in your vehicle.

Kit includes

  • Wahler Thermostat
  • 1 liter of Coolant

This item fits the following BMWs: 
2008-2013  E82 BMW  135i 135is 1M Coupe 
2013+  E84 BMW  X1 xDrive35i 
2011  E90 BMW  335i 335xi 335i xDrive - Sedan 
2011-2013  E92 BMW  335i 335xi 335i xDrive - Coupe 
2011-2013  E93 BMW  335i Convertible 
2011-2013  E70 BMW  X5 xDrive35i 
2011-2013  E71 BMW  X6 xDrive35i

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Water Pump & Thermostat Kit - Gen 1 B46 2.0L
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T#:35863149
Part#: 11518638026TKT
Ships on Jul 29, 2026
$ 681.66 USD
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$ 681.66 USD
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BMW's cooling system has long been a known weak spot, with the water pump and thermostat being two of the most common trouble areas. This remains true even in the latest B-Series engines found in 2016 and newer BMW models. This kit includes a brand-new OEM Pierburg water pump, a Bremmen thermostat (now referred to as a Heat Management Module), and one gallon of BMW's G48 coolant concentrate (enough to make two gallons of 50/50 coolant). Avoid spending thousands at the dealership or over $600 on Genuine BMW parts! These components can be replaced with high-quality OEM parts in just an afternoon using basic hand tools.
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ECS Billet Cylinder Head Outlet Hose Adapter - BMW N52 N54 N55 3.0L N...
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ECS - Corporate Logo
T#:556105
Part#: 024797ECS01
In Stock
Sale - Save 25% $ 74.99

This product was last offered at the strikethrough price on
05-03-2026

$ 56.24 USD
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Some of the biggest issues when owning a BMW can come from cooling system components. Even through years of improvement, the same failure is seen with the plastic fittings and adapters from years of hot to cold temperature fluctuation. The N52/N54/N55/N20 engine sees failure at the plastic cylinder head outlet adapter connecting the cylinder head to the thermostat hose. The stock plastic adapter simply shears off at the end of the barbed fitting, creating a massive coolant leak. The engineering team at ECS Tuning decided a billet aluminum piece was a much better option to contend with the temperature fluctuation. Since other offerings on the market want you to modify your OE hose to be reused, they even developed a silicone replacement hose. These 2 pieces can be purchased separately if you decide to reuse your existing OE hose or in a package kit together for a single click upgrade. Features: Manufactured from billet 6061-T6 with type III anodized for exceptional durability and corrosion resistance. Much stronger part than OEM plastic ​​Will not become brittle and fatigued over time due to thermal cycling. This will prevent the part from breaking during removal and re-installation. Follows OEM form for perfect fitment. Utilizes (and includes) OEM O-ring 11537545278 to ensure a proper seal. Recommended clamp size is 25-40mm
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N55 Mosselman Billet Oil Thermostat
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For Gasket/Install kit see T#4799665
Mosselman Turbosystems - Corporate Logo
T#:4621130
Part#: OTN55.T85
In Stock
$ 379.00 USD
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$ 379.00 USD
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**** DOES NOT INCLUDE HARDWARE ****** Hardware - ES4772301 The N55 engine is no stranger to oil cooling problems, that’s why we recommend installing the MSL Oil Thermostat. The standard oil thermostat will reach around 120 degrees Celsius with a normal driving style. The MSL Oil Thermostat will open at a lower temperature than the standard oil thermostat (at 85 degrees Celsius) and will keep the temperature stable between 95 and 105 degrees Celsius. Installing the MSL thermostat ensures a cooler oil temperature which will result in more stable performance, but above all this improves the reliability of the engine. It is recommended to install the thermostat, especially for cars that are tuned. The Thermostat is plug-and-play and made out of a solid block of high-grade aluminum at our own facility. It is equipped with a real thermostat, not an always open solution. The oil will still reach the operating temperature at the same time as a stock thermostat Features Include: 20°C/68F Lower Than Stock Rock Solid Housing - CNC machined housing. Real Thermostat - Equipped with a real thermostat, not an always open solution. For use in hot and cold climates Quick Installation - Takes only 30 minutes to install.
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Thermostat With Aluminum Housing - N20
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Bremmen Parts - Corporate Logo
T#:30828065
Part#: 11538635689M
In Stock
Sale - Save 20% $ 125.99

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$ 100.36 USD
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Genuine BMW Thermostat - F30 335i, F32 435i, F22 M235i
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Genuine BMW - Corporate Logo
T#:36100
Part#: 11537598865
In Stock
16% off MSRP $ 194.95

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 163.95 USD
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16% off MSRP
$ 194.95

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 163.95 USD
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Engine running a little hot or is the temp gauge not telling you anything? The thermostat might be the likely problem. Many cooling issues start with the thermostat. This is electronically controlled by the engine computer based on the cooling demands of the engine. And cooling components are working harder than ever. Engine performance is also dependant on temperature - as temperatures rise and pass a certain threshold the engine computer will begin reducing power. Stay on top of your cooling maintenance by replacing critical components preventatively.

When doing any sort of repair or maintenance there is no replacement for genuine factory parts. Turner Motorsport carries the Genuine BMW brand with pride and has the parts you need to complete your next project with confidence.

This item fits the following BMWs:
2014+ F22 BMW M235i M235i xDrive
2014+ F23 BMW M235i
2012+ F30 BMW 335i 335i xDrive - Sedan
2013+ F32 BMW 435i 435i xDrive - Coupe
2013+ F33 BMW 435i Convertible 435i xDrive Convertible- Convertible
2014+ F34 BMW 335i xDrive GT - Gran Tourismo
2014+ F36 BMW 435i Gran Coupe 435i xDrive Gran Coupe
2014+ F15 BMW X5 sDrive35i X5 xDrive35i
2015+ F16 BMW X6 sDrive35i X6 xDrive35i
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Thermostat Assembly
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Bavarian Autosport - Corporate Logo
T#:15511823
Part#: 11537598865
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$ 70.19 USD
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Replace your thermostat housing at any signs of leaks or premature failure. Includes housing. Does not include a housing gasket.

Wahler Thermostat Assembly - BMW N55 3.0L
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Wahler - Corporate Logo
T#:39261790
Part#: 11537598865
In Stock
$ 118.99 USD
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BMW N55 3.0L Thermostat Assembly is an essential component for maintaining optimal engine temperature in your BMW, ensuring reliable performance and longevity. A common source of cracks and leaks, the thermostat assembly plays a critical role in regulating coolant flow. This high-quality replacement from Turner Motorsport is designed to meet or exceed OEM standards, providing a dependable solution to prevent overheating and maintain your engine's efficiency.
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BMW N20 2.0L Thermostat With Housing
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Bavarian Autosport - Corporate Logo
T#:18003828
Part#: 11538635689
In Stock
Sale - Save 20% $ 67.99

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$ 54.39 USD
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$ 67.99

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BMW N20 2.0L Thermostat With Housing ensures optimal engine performance by maintaining the correct operating temperature. This crucial component regulates coolant flow, preventing issues related to overheating or inadequate cooling. The thermostat plays a vital role in your BMW’s temperature gauge, influencing engine efficiency and longevity.

  • Precision Temperature Control: Maintains the engine within the ideal temperature range for optimal performance and efficiency.
  • Complete Assembly: Includes the thermostat and housing, offering a convenient and comprehensive solution for replacements.
  • Reliable Operation: Helps prevent common issues such as overheating or running too cool by regulating coolant flow effectively.
  • Enhanced Engine Life: Ensures the engine operates under ideal conditions, extending its lifespan and improving overall performance.
  • High-Quality Construction: Designed to meet or exceed OEM specifications, providing durability and reliable performance.

Upgrade your BMW with the N20 2.0L Thermostat With Housing to ensure reliable temperature management and enhanced engine performance.

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Thermostat - B48
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For vehicles with the Gen1 B48/B46 only - not compatible with the later Gen2 B48 (TU) engines
Bremmen Parts - Corporate Logo
T#:23648673
Part#: 11537644811
In Stock
Sale - Save 15% $ 223.99

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$ 190.39 USD
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Electronic Thermostat And Coolant Distribution Module
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Bremmen Parts - Corporate Logo
T#:26538308
Part#: 11537642854
In Stock
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$ 292.63 USD
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BMW N55 3.0L Thermostat Assembly
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URO - Corporate Logo
T#:637725
Part#: 11537598865
In Stock
$ 83.42 USD
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$ 83.42 USD
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BMW N55 3.0L Thermostat Assembly is an essential component for maintaining optimal engine temperature in your BMW, ensuring reliable performance and longevity. A common source of cracks and leaks, the thermostat assembly plays a critical role in regulating coolant flow. This high-quality replacement from Turner Motorsport is designed to meet or exceed OEM standards, providing a dependable solution to prevent overheating and maintain your engine's efficiency.

  • Reliable Temperature Regulation: Ensures optimal engine temperature for peak performance.
  • High-Quality Replacement: Meets or exceeds OEM standards, reducing the risk of cracks and leaks.
  • Enhanced Durability: Designed to withstand the demands of the N55 3.0L engine.
  • Prevents Overheating: Critical for maintaining engine efficiency and longevity.
  • Perfect Fit: Engineered for easy installation and compatibility with your BMW N55 3.0L engine.
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BMW F30 B58 Electronic Thermostat And Coolant Distribution Module ...
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URO - Corporate Logo
T#:27372122
Part#: 11537642854
Back Ordered
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BMW F30 B58 Electronic Thermostat And Coolant Distribution Module from Turner Motorsport is an essential component for maintaining precise engine temperature control. Managed by the vehicle’s computer, this thermostat ensures optimal performance and efficiency by regulating engine and coolant temperatures accurately.

  • Precise Temperature Control: Managed by the BMW vehicle's computer for accurate engine and coolant temperature regulation.
  • Enhanced Performance: Ensures optimal engine performance and efficiency by maintaining the correct operating temperature.
  • Genuine BMW Quality: Authentic part designed specifically for BMW F30 models with B58 engines.
  • Reliable Operation: Built to meet BMW's high standards for reliability and durability.
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Mahle-Behr Thermostat With Housing - E84, F10, F22, F26, F30, F31, F3...
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Mahle-Behr - Corporate Logo
T#:363991
Part#: 11537633476
In Stock
$ 104.99 USD
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$ 104.99 USD
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No heat? Overheating? Time for a cooling system service.

Genuine BMW - Thermostat with housing and gasket - 11537644811 ...
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For vehicles with the Gen1 B48/B46 only - not compatible with the later Gen2 B48 (TU) engines
Genuine BMW - Corporate Logo
T#:539226
Part#: 11537644811
In Stock
12% off MSRP $ 602.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 530.99 USD
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$ 602.99

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11537644811 - Thermostat with housing and gasket. The thermostat controls the flow of coolant based on temperatures in the engine. This is a crucial component to your cooling system and making sure your car is operating properly.
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Junction Heat Hose - 11538606278
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Bremmen Parts - Corporate Logo
T#:36913362
Part#: 11538606278
In Stock
Sale - Save 21% $ 54.99

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$ 43.24 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 Heat Management Module - 11537642854
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Genuine BMW - Corporate Logo
T#:222844
Part#: 11537642854
Ships in 1-2 days
8% off MSRP $ 603.99

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$ 557.99 USD
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$ 603.99

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$ 557.99 USD
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Genuine Bmw Heat Management Module - 11537642854
Genuine BMW Thermostat With Housing - N20
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Genuine BMW - Corporate Logo
T#:367096
Part#: 11538635689
In Stock
11% off MSRP $ 155.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 138.99 USD
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$ 155.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 138.99 USD
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N20 thermostats are prone to failure - replace yours today with a Genuine BMW replacement.

Turner Motorsport is proud to be your source for Genuine BMW parts.

 


HOSE - JUNCTION-HEAT
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Genuine BMW - Corporate Logo
T#:546143
Part#: 11538606278
Ships in 1-2 days
8% off MSRP $ 84.99

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$ 77.99 USD
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8% off MSRP
$ 84.99

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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.

BMW B46 B48 Thermostat With Housing And Gasket
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URO - Corporate Logo
T#:27372124
Part#: 11537644811
Back Ordered
$ 265.99 USD
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BMW B46 B48 Thermostat With Housing And Gasket is an essential component for maintaining optimal engine performance and cooling efficiency. This high-quality thermostat comes complete with housing and gasket, ensuring a precise fit and reliable operation.

The thermostat plays a crucial role in regulating the flow of coolant based on engine temperature. By controlling this flow, it helps maintain the engine at its optimal operating temperature, preventing overheating and ensuring efficient performance.

  • Complete Assembly: Includes thermostat, housing, and gasket for easy installation.
  • Optimal Cooling: Regulates coolant flow to maintain proper engine temperature.
  • Enhanced Performance: Ensures your engine operates within its ideal temperature range.
  • Durable Construction: Made with high-quality materials for long-lasting reliability.

Ensure your BMW's cooling system is functioning correctly with this reliable thermostat assembly from Turner Motorsport.

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Thermostat O-ring
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Genuine BMW - Corporate Logo
T#:526204
Part#: 11538658572
Ships in 1-2 days
$ 9.99

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$ 8.99 USD
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$ 8.99 USD
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O ring that seals the thermostat to the coolant pump. New seals are a must when doing any repairs.
Genuine BMW Profile-Gasket - 11538658571
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Genuine BMW - Corporate Logo
T#:222845
Part#: 11538658571
In Stock
13% off MSRP $ 14.99

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$ 12.99 USD
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13% off MSRP
$ 14.99

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$ 12.99 USD
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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 - Gen 1 B46 2.0L ...
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Genuine BMW - Corporate Logo
T#:35863148
Part#: 11518638026KT
In Stock
$ 741.99

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$ 739.99 USD
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The cooling system has always been a weak point for BMW. Two of the biggest issues are the water pump and thermostat. This continues to be true even on the newest B-Series engines found in 2016+ BMWs. This kit includes a brand new Genuine BMW water pump, a new thermostat (now referred to as a Heat Management Module), and 1 gallon of BMW's G48 coolant concentrate (makes 2 gallons of 50/50 coolant). Don't spend thousands of dollars at the dealership, these can easily be replaced in an afternoon with basic mechanic's tools.
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Rein Thermostat Assembly - F Chassis, G-Chassis - B48
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Rein - Corporate Logo
T#:53891628
Part#: 11537644811
Ships in 4 Business Days
New Item
$ 322.99 USD
$ 322.99 USD
Whether you're managing a fleet of "spirited" daily drivers or prepping a chassis for the circuit, the Rein CTA0079 offers the peace of mind that comes with OE-quality engineering.
URO - Engine Oil Thermostat
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URO - Corporate Logo
T#:33446277
Part#: 11427637052
Ships in 2 Business Days
$ 143.99 USD
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An engine oil thermostat regulates engine oil temperature which is a critical function that keeps the engine oil at an optimal temperature which can improve the engines life span.

Radiator Return Pipe - B58
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Genuine BMW - Corporate Logo
T#:545300
Part#: 11538630023
Ships in 1-2 days
9% off MSRP $ 329.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 299.99 USD
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9% off MSRP
$ 329.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 299.99 USD
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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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Genuine BMW Heat Management Module/Thermostat Replacement Kit ...
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For 2018+ vehicles only.
Genuine BMW - Corporate Logo
T#:27372127
Part#: 11537642854KT3
Ships in 1-2 days
$ 593.99 USD
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Restore your engine's coolant flow control with this Genuine BMW Heat Management Module (HMM) replacement kit, designed for BMW B58 engines.

Key Features:

Advanced coolant flow control with an electronically controlled rotary valve Rapid engine warmup for optimal performance in various driving conditions Precise temperature management to prevent overheating Includes sealing o-rings, hardware, and gaskets for a secure installation Compatible with BMW B58 engines for seamless integration How to Identify a Faulty Heat Management Module:

Engine overheating due to a stuck rotary valve in the "rapid warmup" position Failure to reach the operating temperature Fault codes 20F220, 20F206, 20A704 indicating potential HMM issues Don't compromise on engine performance. Replace your Heat Management Module today for optimal cooling and efficiency.

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Genuine BMW Heat Management Module/Thermostat Replacement Kit ...
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For vehicles produced before 2018
Genuine BMW - Corporate Logo
T#:27372125
Part#: 11537642854KT
Ships in 1-2 days
$ 585.99

This product was last offered at the strikethrough price on
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$ 583.99 USD
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$ 583.99 USD
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Restore your engine's coolant flow control with this Genuine BMW Heat Management Module (HMM) replacement kit, designed for BMW B58 engines.

Key Features:

Advanced coolant flow control with an electronically controlled rotary valve Rapid engine warmup for optimal performance in various driving conditions Precise temperature management to prevent overheating Includes sealing o-rings, hardware, and gaskets for a secure installation Compatible with BMW B58 engines for seamless integration How to Identify a Faulty Heat Management Module:

Engine overheating due to a stuck rotary valve in the "rapid warmup" position Failure to reach the operating temperature Fault codes 20F220, 20F206, 20A704 indicating potential HMM issues Don't compromise on engine performance. Replace your Heat Management Module today for optimal cooling and efficiency.

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N55 Mosselman Billet Oil Thermostat - Black
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Mosselman Turbosystems - Corporate Logo
T#:50101777
Part#: 30210057
Ships in 7 Business Days
New Item
$ 399.00 USD
Free Shipping on orders $49 and up
The N55 engine is no stranger to oil cooling problems, that’s why we recommend installing the MSL Oil Thermostat. The standard oil thermostat will reach around 120 degrees Celsius with a normal driving style. The MSL Oil Thermostat will open at a lower temperature than the standard oil thermostat (at 85 degrees Celsius) and will keep the temperature stable between 95 and 105 degrees Celsius. Installing the MSL thermostat ensures a cooler oil temperature which will result in more stable performance, but above all this improves the reliability of the engine. It is recommended to install the thermostat, especially for cars that are tuned.
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Meyle Thermostat Housing - BMW E84, F10, F22, F26, F30, F31, F32, F33...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
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Meyle - Corporate Logo
T#:5704976
Part#: 11538635689
Special Order: No Guaranteed ETA
$ 72.99 USD
Free Shipping on orders $49 and up
When it comes to your temperature gauge on your instrument cluster your thermostat plays a large role in where that temperature needle ends up. There are many cases where the vehicle will run a bit cool according to that gauge, oftentimes meaning the thermostat has failed and is stuck open allowing coolant to continuously circulate. The other more damaging side is when it closes shut and keeps the engine from cooling down properly. All vehicles are designed to operate in an ideal temperature range for the ultimate efficiency, life, and performance.
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