BMW Thermostats for BMW E36 (1992-1998) M3

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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 Replacement Kit - E36
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Packaged by Turner - Corporate Logo
T#:554081
Part#: 11537511580KT3
Ships on Nov 27, 2026
Sale - Save 3% $ 62.99

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

$ 60.91 USD
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Sale - Save 3%
$ 62.99

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

$ 60.91 USD
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When it comes time to replace your thermostat, be sure you have everything you need. This kit includes everything you need to replace your thermostat, including the thermostat.

Kit includes:

  • Thermostat with gasket
  • Thermostat mounting hardware
  • 1 liter of coolant

This waterpump fits the following BMWs: 
1992-1999 E36 3 series - 323is, 323ic, 325i, 325is, 325ic, 328i, 328ic, M3 3.0 (S50/US), M3 3.2 (S52) 

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Thermostat - 88 Degree - E24, E28, E30, E32, E34, E36, E39, Z3 ...
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Mahle-Behr - Corporate Logo
T#:341062
Part#: 11537511580
In Stock
$ 27.99 USD
Free Shipping on orders $49 and up

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.

Most of the engines from the mid-1980s through the 1990s use the same thermostat design and they are interchangeable among the different temperatures. This is the 88* thermostat, towards the top of the range. However, keep in mind that BMW spent a lot of time engineering the cooling system to work in all kinds of conditions and changing thermostat temperature is not recommended to fix any failures in the cooling system.

Hailing from Stuttgart, Mahle-Behr specializes in automotive cooling systems. From air conditioning to engine cooling M-B has you covered with OE-quality replacement parts.

This thermostat fits the following BMWs:
1977-1983 E21 BMW 323i
1986-1991 E30 BMW 318is 318ic 325e 325es 325i 325ic 325is 325ix
1992-1999 E36 BMW 318i 318is 318ti 318ic 323is 323ic 325i 325is 325ic 328i 328is 328ic M3
1982-1988 E28 BMW 528e
1986-1988 E28 BMW 535i
1989-1995 E34 BMW 525i 535i
1997-1998 E39 BMW 528i
1986-1989 E24 BMW 635csi
1988-1994 E32 BMW 735i 735il
1997-2000 Z3 BMW Z3 2.8 M Roadster M Coupe

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OEM Mahle-Behr Thermostat - 80 Degree - E24, E28, E30, E32, E34, E36,...
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Mahle-Behr - Corporate Logo
T#:2199
Part#: 11531713040
In Stock
$ 36.00

This product was last offered at the strikethrough price on
04-25-2026

$ 34.99 USD
Free Shipping on orders $49 and up
$ 34.99 USD
Free Shipping on orders $49 and up
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.

Most of the engines from the mid-1980s through the 1990s use the same thermostat design and they are interchangeable among the different temperatures. This is the 80* thermostat, towards the lower end of the range. However, keep in mind that BMW spent a lot of time engineering the cooling system to work in all kinds of conditions and changing thermostat temperature is not recommended to fix any failures in the cooling system.

This thermostat fits the following BMWs:
1977-1983 E21 BMW 323i
1986-1991 E30 BMW 318is 318ic 325e 325es 325i 325ic 325is 325ix
1992-1999 E36 BMW 318i 318is 318ti 318ic 323is 323ic 325i 325is 325ic 328i 328is 328ic M3
1982-1988 E28 BMW 528e
1986-1988 E28 BMW 535i
1989-1995 E34 BMW 525i 535i
1997-1998 E39 BMW 528i
1986-1989 E24 BMW 635csi
1988-1994 E32 BMW 735i 735il
1997-2000 Z3 BMW Z3 2.8 M Roadster M Coupe
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Aluminum Thermostat Housing - E34, E36, Z3
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Bremmen Parts - Corporate Logo
T#:579865
Part#: 54402
In Stock
Sale - Save 22% $ 25.99

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

$ 20.39 USD
Free Shipping on orders $49 and up
Sale - Save 22%
$ 25.99

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

$ 20.39 USD
Free Shipping on orders $49 and up
The plastic thermostat cover in your BMW is a known point of failure. Throughout the years of repeated contact with hot coolant, the plastic can crack and cause massive coolant leaks and potential overheating.
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URO Aluminum Thermostat Housing - E34 E36 Z3 M50/52 S50/52
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2X Entries For Our G87 M2 Sweepstakes!
URO Premium - Corporate Logo
T#:14587
Part#: 11531722531
In Stock
$ 21.99 USD
Free Shipping on orders $49 and up
$ 21.99 USD
Free Shipping on orders $49 and up
The plastic thermostat cover in your BMW is a known point of failure. Throughout the 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. This is the last thermostat housing you will need to put on your vehicle.
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Mishimoto Racing Thermostat - 68 Degree - E24, E28, E30, E32, E34, E3...
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Mishimoto - Corporate Logo
T#:363172
Part#: MMTSE3692
In Stock
$ 68.99 USD
Free Shipping on orders $49 and up

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.  

Most of the engines from the mid-1980s through the 1990s use the same thermostat design and they are interchangeable among the different temperatures. This is the 68*C thermostat, at the bottom of the temperature range. It should only be used in racing situations such as when deleting the engine fan. However, keep in mind that BMW spent a lot of time engineering the cooling system to work in all kinds of conditions and changing thermostat temperature is not recommended to fix any failures in the cooling system.  

Mishimoto makes coolant tanks, radiators and much more for your Mini/BMW. Established in 2003 their commitment to absolute quality in the aftermarket world is evident through the quality and performance enhancing products they offer.
 

This thermostat fits the following BMWs:   
1977-1983  E21 BMW  323i  
1986-1991  E30 BMW  318is 318ic 325e 325es 325i 325ic 325is 325ix  
1992-1999  E36 BMW  318i 318is 318ti 318ic 323is 323ic 325i 325is 325ic 328i 328is 328ic M3  
1982-1988  E28 BMW  528e  
1986-1988  E28 BMW  535i  
1989-1995  E34 BMW  525i 535i  
1997-1998  E39 BMW  528i  
1986-1989  E24 BMW  635csi  
1988-1994  E32 BMW  735i 735il  
1997-2000  Z3 BMW  Z3 2.8 M Roadster M Coupe 

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Genuine BMW Thermostat - 88ºC
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Genuine BMW - Corporate Logo
T#:360691
Part#: 11537511580
In Stock
3% off MSRP $ 59.99

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

$ 57.99 USD
Free Shipping on orders $49 and up
3% off MSRP
$ 59.99

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

$ 57.99 USD
Free Shipping on orders $49 and up
Thermostat - 80C
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Wahler - Corporate Logo
T#:594831
Part#: 11531713040
In Stock at Vendor
$ 49.61 USD
Free Shipping on orders $49 and up

Febi Thermostat Housing - E34, E36, Z3
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We Price Match - Give Us A Call or Chat!
Febi - Corporate Logo
T#:381790
Part#: 11531722531
In Stock at Vendor
$ 53.42 USD
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$ 53.42 USD
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Replacement plastic thermostat housing

Wahler Thermostat - 88�C - E30, E34, E36, Z3
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Wahler - Corporate Logo
T#:369466
Part#: 11537511580
In Stock at Vendor
$ 52.99

This product was last offered at the strikethrough price on
05-07-2026

$ 51.99 USD
Free Shipping on orders $49 and up
$ 51.99 USD
Free Shipping on orders $49 and up
Common point of failure in the cooling system.
Genuine BMW Thermostat Housing
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:360679
Part#: 11531722531
Ships in 2 Business Days
4% off MSRP $ 76.99

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

$ 73.99 USD
Free Shipping on orders $49 and up
4% off MSRP
$ 76.99

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

$ 73.99 USD
Free Shipping on orders $49 and up
Rein Thermostat - 88�C - E30, E34, E36, Z3
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Rein - Corporate Logo
T#:591800
Part#: 11537511580
Ships in 3 Business Days
$ 37.99 USD
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Common point of failure in the cooling system.


Genuine BMW Thermostat - 92ºC
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:360690
Part#: 11537511083
In Stock
11% off MSRP $ 101.99

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

$ 92.99 USD
Limited Qty Sale
Free Shipping
11% off MSRP
$ 101.99

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

$ 92.99 USD
Limited Qty Sale
Free Shipping
Mahle-Behr Thermostat - 92C - E34, E36, E39
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Mahle - Corporate Logo
T#:12476
Part#: 11537511083
Ships in 8 Business Days
$ 29.99

This product was last offered at the strikethrough price on
05-22-2026

$ 27.44 USD
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$ 27.44 USD
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OEM BMW THERMOSTAT:115040
Febi Thermostat - 88°C - E30, E34, E36, Z3
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Febi - Corporate Logo
T#:382407
Part#: 11537511580
Ships on Sep 2, 2026
$ 32.99 USD
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Includes sealing O-ring gasket

Wahler Auxiliary Thermostat - E34, E36
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Wahler - Corporate Logo
T#:375968
Part#: 13541730682
Back Ordered
$ 66.99 USD
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$ 66.99 USD
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Thermostat that controls water flow temperature to the throttle body

Thermostat Housing Gasket - M50, M52, S50, S52
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Genuine BMW - Corporate Logo
T#:407610
Part#: 11531740437
In Stock
12% off MSRP $ 13.55

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

$ 11.90 USD
Free Shipping on orders $49 and up
12% off MSRP
$ 13.55

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

$ 11.90 USD
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Needs to be replaced once removed
Rein Thermostat O-Ring (60 X 3.5 mm) - E28 E30 E32 E34 E36 E39 Z3 E23...
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Rein - Corporate Logo
T#:591144
Part#: 11531265084
In Stock
$ 2.05 USD
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This O-ring seals the thermostat to the cylinder head.

Rein Thermostat - 92C
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Rein - Corporate Logo
T#:34114254
Part#: 11537511083
In Stock
$ 11.99 USD
Free Shipping on orders $49 and up

Rein Thermostat 92C is an essential component designed to regulate the temperature in BMW engines, ensuring the vehicle runs at optimal performance while preventing overheating. Engineered to open at 92°C, this high-quality thermostat allows for precise coolant flow, keeping the engine at the correct temperature for maximum efficiency. Available at Turner Motorsport, the Rein Thermostat 92C is designed specifically for BMW vehicles, offering a direct-fit replacement that ensures easy installation and reliable operation.

  • Opens at 92°C for precise temperature regulation
  • Designed specifically for BMW engines for perfect fit and compatibility
  • Prevents engine overheating and helps protect critical engine components
  • Enhances overall engine efficiency and performance
  • Manufactured from durable materials for long-lasting reliability
  • Direct-fit replacement for easy installation

The Rein Thermostat 92C is the ideal solution for BMW owners who want to ensure their vehicle’s engine operates efficiently and reliably, providing optimal temperature control and enhanced performance.

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Wahler Performance Thermostat - 75*C - M42, M50, M52, S50, S52 ...
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Wahler - Corporate Logo
T#:54388511
Part#: 11537511580
In Stock at Vendor
New Item
$ 59.99 USD
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75°C variant is specifically calibrated for track racing, forced-induction builds, or hot-climate competitive environments

Coolant Hose
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URO - Corporate Logo
T#:373145
Part#: 13541735173
Back Ordered
$ 13.99 USD
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Cylinder head to thermostat