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BMW Thermostats

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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Bav Auto Thermostat With Aluminum Housing - M52TU M54

10X Entries Into Our F80 M3 Sweepstakes

T#:12544802

Part#: 11531437040

In Stock

Sale - Save 19% $ 104.99

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

$ 84.99 USD

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Sale - Save 19%

$ 104.99

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

$ 84.99 USD

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The plastic thermostat cover in your BMW is a known point of failure. Throughout years of repeated contact with hot coolant, the plastic can crack and cause massive coolant leaks and potential overheating. Eliminate one of the weak links in your cooling system with a replacement aluminum thermostat housing. By installing this aluminum unit, you have no worries as far as plastic housing cracks go

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Thermostat Assembly

10X Entries Into Our F80 M3 Sweepstakes

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

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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

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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

10X Entries Into Our F80 M3 Sweepstakes

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

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Qty

Sale - Save 15%

$ 67.99

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

$ 57.99 USD

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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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Aluminum Thermostat Housing Kit - M50

T#:397222

Part#: 14-009

Ships in 10 Business Days

$ 56.99 USD

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$ 56.99 USD

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Plastic thermostat housing cracked on your M50?

Here are your choices: you can wait for the plastic factory thermostat housing cover to break and cause major overheating. (Even with a new stock cover, it won’t take long.) Or you can install a thoughtfully engineered all-aluminum thermostat housing cover from Active Autowerke and never experience this type of failure again. Currently there is no factory upgraded part to this problem. This is an aluminum extruded part that has all of the openings machine properly to fit like factory; from the mounting bolt holes, the seating of the thermostat to the sealing opening for the ORANGE gasket. Forged to exact factory tolerances, everything fits and this unit is a true easy bolt-on – especially suited for racing or load conditions like heavy traffic, where engine temp can rise rapidly. The housing is guaranteed never to break from overheating or over-tightening, and its CNC machined surface ensures a precise seat.

Unit comes complete with a new ORANGE sealing gasket; a new thermostat is recommended but not included.
For hotter climates, a 71 degree thermostat is recommended over the 82 degree unit.

Anything and everything BMW is the mantra at Active Autowerke. Since 1981 they have been serving the BMW community with custom turbocharger kits to a myriad of other innovative and inspiring performance parts.

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Thermostat With Housing

10X Entries Into Our F80 M3 Sweepstakes

T#:18003829

Part#: 11517805811

In Stock

Sale - Save 20% $ 58.99

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

$ 47.19 USD

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Qty

Sale - Save 20%

$ 58.99

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

$ 47.19 USD

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Motorsport Thermostat - 60C - Complete with Housing - M54 / M52tu ...

T#:1171

Part#: TMS1171

Ships in 6 Business Days

$ 415.45 USD

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$ 415.45 USD

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This is a genuine BMW Motorsport part, designed specifically for BMW racing applications. We use this exact thermostat setup in our Championship-winning E46 330i race car. It is designed to be used on all M54 and M52TU double-VAN0S engines, as used in the 1999-2000 E46 323/328 and 2001-2005 E46 325/330. This 60 degree C (140 defrees F) thermostat comes complete with plastic thermostat housing. It does not use the plug and wiring for the stock DME so this should only be used with an aftermarket engine management system (Motec, Bosch, etc).

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.

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Active Autowerke Thermostat Bypass/Delete Tube - S65

T#:2302749

Part#: 14-016

Ships in 10 Business Days

$ 141.99 USD

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$ 141.99 USD

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CNC machined coolant/water thermostat bypass tube to improve flow on and off the track. Easy plug and play installation and a durable anodized coating make this a simple and reliable temperature control solution.

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Motorsport Thermostat - 55 (NO LONGER AVAILABLE)

T#:337991

Part#: 11531417215

Back Ordered

Starting at $ 233.98 USD

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Starting at $ 233.98 USD

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E46M3 Motorsport Thermostat 55C (Also fits Euro E36 M3 engine) A Genuine BMW part this thermostat opens at a much lower temperature than stock to keep your S54 engine (or Euro S50/S52 engine) running cooler in race applications.

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