BMW Thermostats for BMW X Series E84 (2013-2015)

Clear BMW chassis

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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Thermostat With Aluminum Housing - N20

T#:30828065

Part#: 11538635689M

In Stock

Sale - Save 20% $ 125.99

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

$ 100.36 USD

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Sale - Save 20%

$ 125.99

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

$ 100.36 USD

Add to Wish List

BMW N20 2.0L Thermostat With Housing

T#:18003828

Part#: 11538635689

In Stock

Sale - Save 20% $ 67.99

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

$ 54.39 USD

Add to Wish List

Qty

Sale - Save 20%

$ 67.99

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

$ 54.39 USD

Add to Wish List

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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Mishimoto 74 Degree Performance Thermostat - N52 N54 N55

T#:363461

Part#: MMTS-E90-07

In Stock

$ 83.99 USD

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$ 83.99 USD

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The thermostat regulates the temperature of your coolant. At a predetermined temperature the thermostat will open to let coolant flow to the radiator and be cooled by airflow or the fan. Over time the thermostat will become stuck open or closed, leading to a variety of issues. A closed thermostat will never allow the coolant to reach the radiator and be cooled. Hot coolant will continue to circulate through the engine and absorb even more heat until boiling and the system overheats. An open thermostat is not as bad but is still not ideal - the coolant is always cool, with the temp needle always reading in the cool range. This tells the ECU to richen the fuel mixture to bring the car up to normal operating temp. So your fuel mileage decreases and the car runs rich.

Replacing the thermostat is an easy but messy job. This thermostat includes the main o-ring (but a housing gasket may be required). Consider replacing the housing and any associated temp sensors while you're in there. The cooling system will need to be bled after.

For vehicles with plastic thermostat housing

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