BMW Thermostats for BMW F80 M3 S55 3.0L

BMW N54 N55 S55 Mosselman Thermostat Installation Kit

T#:4799665

Part#: THERMINSTALLKT

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Sale - Save 6% $ 22.99

This product was last offered at the strikethrough price on
06-15-2026

$ 21.64 USD

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$ 22.99

This product was last offered at the strikethrough price on
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$ 21.64 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 Installation Kit with Thermostat - N54, N55, S55

T#:55353595

Part#: OTN54.T85KT3

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$ 390.23 USD

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$ 390.23 USD

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High oil temperatures are the ultimate enemy of your engine's longevity and performance. If you want to keep pushing your BMW to the limit you need to manage the heat.

Performance Thermostat - 90C - N62, N63, S63, N73, S55

T#:637061

Part#: 11537586885

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Sale - Save 20% $ 93.99

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

$ 75.06 USD

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Sale - Save 20%

$ 93.99

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

$ 75.06 USD

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Includes housing and sealing o-ring A thermostat that opens sooner promotes better cooling in your vehicle. Running a lower temperature thermostat will keep everything much cooler. Keeping the engine cooler will help reduce and improve the life of the seals in your engine, saving you time and money, while also helping to increase engine performance. A tune might be required to gain the most from this modification, as well as to get your car's ECU accustomed to seeing lower temperatures.

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ECS Billet Cylinder Head Outlet Hose Adapter - BMW N52 N54 N55 3.0L N...

T#:556105

Part#: 024797ECS01

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Sale - Save 25% $ 76.99

This product was last offered at the strikethrough price on
06-14-2026

$ 57.74 USD

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Sale - Save 25%

$ 76.99

This product was last offered at the strikethrough price on
06-14-2026

$ 57.74 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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Mosselman S55 Billet Oil Thermostat - Silver - BMW F8X S55 3.0L ...

T#:4621129

Part#: OTS55.T85

Ships in 5 Business Days

$ 459.00 USD

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$ 459.00 USD

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**** DOES NOT INCLUDE HARDWARE ****** The S55 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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Wahler Thermostat - 105C

T#:369356

Part#: 11537586885

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$ 72.99 USD

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$ 72.99 USD

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Includes housing and sealing o-ring

Genuine BMW Thermostat - E53 E6X E70 F10 F12 F13 F8X

T#:2255

Part#: 11537586885

Ships in 3 Business Days

8% off MSRP $ 135.99

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

$ 124.99 USD

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8% off MSRP

$ 135.99

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

$ 124.99 USD

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Don't take chances! Proper maintenance is required to keep your car performing at peak levels. The thermostat basically controls when your car will overheat. Don't let it fail on you.

URO Thermostat Assembly - BMW E53 E6X E70 F10 F12 F13 F8X

T#:50031902

Part#: 11537586885

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$ 77.88

This product was last offered at the strikethrough price on
03-08-2026

$ 74.99 USD

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$ 74.99 USD

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Provides optimal engine cooling performance.

Mishimoto Racing Thermostat & Housing - BMW F8X M2, M3, M4

T#:51075075

Part#: MMTS-F80-15

Ships in 3 Business Days

$ 139.99 USD

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$ 139.99 USD

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The Mishimoto S55 Racing Thermostat provides superior thermal control compared to standard equipment.

Thermostat - 105C

T#:15511827

Part#: 11537502779

Ships on Aug 11, 2026

Sale - Save 3% $ 46.99

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

$ 45.58 USD

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$ 46.99

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

$ 45.58 USD

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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.

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