BMW Thermostats for BMW 3 Series F30 (2012+)

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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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Thermostat Assembly
Thermostat Assembly
10X Entries Into Our F80 M3 Sweepstakes
Bavarian Autosport - Corporate Logo
T#:15511823
Part#: 11537598865
In Stock
Sale - Save 10% $ 78.99

This product was last offered at the strikethrough price on
08-11-2026

$ 71.09 USD
Free Shipping on orders $49 and up
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Sale - Save 10%
$ 78.99

This product was last offered at the strikethrough price on
08-11-2026

$ 71.09 USD
Free Shipping on orders $49 and up
Add to Wish List
Replace your thermostat housing at any signs of leaks or premature failure. Includes housing. Does not include a housing gasket.
BMW N20 2.0L Thermostat With Housing
BMW N20 2.0L Thermostat With Housing
10X Entries Into Our F80 M3 Sweepstakes
Bavarian Autosport - Corporate Logo
T#:18003828
Part#: 11538635689
In Stock
Sale - Save 15% $ 67.99

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

$ 57.99 USD
Free Shipping on orders $49 and up
Add to Wish List
Sale - Save 15%
$ 67.99

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

$ 57.99 USD
Free Shipping on orders $49 and up
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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Rein Thermostat Assembly - F Chassis, G-Chassis - B48
Rein Thermostat Assembly - F Chassis, G-Chassis - B48
2X Entries Into Our F80 M3 Sweepstakes
Rein - Corporate Logo
T#:53891628
Part#: 11537644811
Ships in 4 Business Days
New Item
$ 322.99

This product was last offered at the strikethrough price on
06-10-2026

$ 288.99 USD
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$ 288.99 USD
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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.
Rein Junction Heat Hose - F3x F22 G30 G12 G01 G02 B58
Rein Junction Heat Hose - F3x F22 G30 G12 G01 G02 B58
2X Entries Into Our F80 M3 Sweepstakes
Rein - Corporate Logo
T#:58563047
Part#: 11538606278
Ships in 4 Business Days
New Item
$ 38.99 USD
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$ 38.99 USD
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Protect your engine against thermal degradation and maintain precise cooling system pressure with a Rein Heat Exchanger Return Hose. Engineered as a direct fit replacement for failure prone factory coolant lines, this hose routes coolant through the heat exchanger assembly to prevent thermal spikes under heavy load. Manufactured with high grade heat resistant EPDM rubber and OEM style quick connect fittings, it provides exceptional resistance to internal pressure surges, oil exposure, and cracking across high output 3.0L inline six engine bays.
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Rein Thermostat Assembly - F22 F87 F23 F30 F34 F32 F33 F36 F15 F16 - N55
Rein Thermostat Assembly - F22 F87 F23 F30 F34 F32 F33 F36 F15 F16 - ...
2X Entries Into Our F80 M3 Sweepstakes
Rein - Corporate Logo
T#:55965849
Part#: 11537598865
Ships in 4 Business Days
New Item
$ 79.99 USD
Add to Wish List
$ 79.99 USD
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A malfunctioning or lazy thermostat can lead to poor fuel trim efficiency, sluggish performance, and destructive overheating. This Rein thermostat assembly is engineered as a robust direct replacement for your worn factory unit, ensuring proper coolant regulation through the radiator under heavy loads.
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