BMW Thermostats for BMW 3 Series E91 (2006-2012)

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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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Water Pump And Thermostat Kit - BMW N52 3.0L
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Packaged by Turner - Corporate Logo
T#:17073598
Part#: 11537549476KT
In Stock
Sale - Save 25% $ 424.99

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

$ 318.74 USD
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Sale - Save 25%
$ 424.99

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

$ 318.74 USD
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Includes everything you may need to replace your water pump and thermostat.
Water Pump And Thermostat Kit
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Packaged by Turner - Corporate Logo
T#:5376274
Part#: 11517586925TKT
In Stock
Sale - Save 25% $ 448.99

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

$ 336.73 USD
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Sale - Save 25%
$ 448.99

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

$ 336.73 USD
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Everything you need to replace your water pump and thermostat. The water pumps in these BMW models are known for failure near 80,000 miles is a very common issue often times leaving the owner stranded. The aftermarket kit offered provides a single stop for water pump and thermostat replacement needs to save the search and get you back on the road. Kit includes: Mahle-Behr thermostat Water pump Genuine BMW coolant thermostat to water pump hose Mounting hardware required for both the thermostat and water pump
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Thermostat
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Bremmen Parts - Corporate Logo
T#:15511826
Part#: 11537549476
In Stock
Sale - Save 18% $ 84.99

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

$ 69.99 USD
Free Shipping on orders $49 and up
Sale - Save 18%
$ 84.99

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

$ 69.99 USD
Free Shipping on orders $49 and up
Overheating your N52 or N54 engine can be detrimental to the longevity of your engine. We also recommend replacing your hardware 07119903851 x2

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
Free Shipping on orders $49 and up
Sale - Save 25%
$ 74.99

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

$ 56.24 USD
Free Shipping on orders $49 and up
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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ECS Aluminized Silicone Water Pump Hose V2.0 - - E9x E8x E6x N52 N54...
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ECS - Corporate Logo
T#:640062
Part#: 008286LA01
In Stock
Sale - Save 35% $ 103.99

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

$ 67.59 USD
Free Shipping on orders $49 and up
Sale - Save 35%
$ 103.99

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

$ 67.59 USD
Free Shipping on orders $49 and up
When it comes to cooling system hose replacement, the "U" shaped hose connecting the water pump to the thermostat is usually the first to fail. A lot of this comes from its close proximity to the hot downpipes, while some of this failure comes from the sharp bends in the hose. 

Why not upgrade when you're due for a replacement? The ECS Tuning silicone hose replacement fixes these issue with two key features in their design. Offering this hose in a much more heat resistant silicone instead of OE rubber and having the hose wrapped in aluminum. The aluminum coating acts as a heat shield to further protect the silicone as well as reducing the temperatures forced on the coolant running through the hose. 

Replaces OE hose #11537545665

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OEM Mahle-Behr Thermostat - E82 E9X E60 X3 Z4 with N52 N54 engines ...
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Mahle-Behr - Corporate Logo
T#:341203
Part#: 11537549476
In Stock
$ 135.99

This product was last offered at the strikethrough price on
06-03-2026

$ 108.99 USD
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$ 108.99 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 from the engine. And cooling components are working harder than ever. Engine performance is also dependent 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. This replacement thermostat fits many of the N51 N52 N53 N54 6 cylinder engines and is an OEM Behr part. 

The thermostat is located along with the water pump on the side of the engine. To gain access for removal you may need to remove the water pump as well. If the water pump is removed you MUST replace its mounting bolts. You can add them from the options below. We also have a bundled package that includes the water pump, mounting screws, connecting hose, and clamps if you want to replace everything together (recommended). 

This thermostat fits the following BMWs:
2008+  E82  BMW 128i 135i
2007+  E9X  BMW 325i 325xi 328i 328xi 330i 335i 335xi
2006+  E60  BMW 525i 525xi 528i 528xi 530i 530xi 535i 535xi
2006+  X3  BMW X3 3.0i X3 3.0si
2006+  Z4  BMW Z4 3.0i Z4 3.0si
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Aluminized Silicone Water Pump Hose - with clamps
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
ECS - Corporate Logo
T#:568837
Part#: 020414ECS01KT
In Stock
Sale - Save 40% $ 110.99

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

$ 66.59 USD
Free Shipping
Sale - Save 40%
$ 110.99

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

$ 66.59 USD
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OEM Wahler Thermostat Assembly - E60/61 E82/88 E9X Z4 N51/N52 ...
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Wahler - Corporate Logo
T#:360363
Part#: 11537549476
In Stock
$ 97.91

This product was last offered at the strikethrough price on
03-25-2026

$ 96.99 USD
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$ 96.99 USD
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If your vehicle is experiencing cooling issues, chances are the thermostat is the cause. Common symptoms include a 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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URO Thermostat - E60, E61, E82, E83, E88, E90, E91, E92, E93, Z4 ...
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URO - Corporate Logo
T#:591812
Part#: 11537549476
In Stock
$ 74.99 USD
Free Shipping on orders $49 and up
Restore proper function to your cooling system

Thermostat Replacement Kit
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Wahler - Corporate Logo
T#:374361
Part#: N524TSTKT1
In Stock
$ 112.99

This product was last offered at the strikethrough price on
03-26-2026

$ 111.99 USD
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$ 111.99 USD
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Genuine BMW Thermostat - 11537549476 - N51/N52 N54
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Genuine BMW - Corporate Logo
T#:360694
Part#: 11537549476
In Stock
16% off MSRP $ 316.79

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

$ 265.77 USD
Free Shipping
16% off MSRP
$ 316.79

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

$ 265.77 USD
Free Shipping

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 from the engine. And cooling components are working harder than ever. Engine performance is also dependent 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. This replacement thermostat fits many of the N51 N52 N53 N54 6 cylinder engines and is an OEM Behr part.  

The thermostat is located along with the water pump on the side of the engine. To gain access for removal you may need to remove the water pump as well. If the water pump is removed you MUST replace its mounting bolts. You can add them from the options below. We also have a bundled package that includes the water pump, mounting screws, connecting hose, and clamps if you want to replace everything together (recommended).  

For the following BMW engines:
N54 N52

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