BMW Thermostats for BMW 5 Series E28 (1982-1988)

Clear BMW chassis

Please ensure your correct model is selected

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.
Sort By:

Thermostat Replacement Kit - E28, E30, E34 M20B25/27
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Packaged by Turner - Corporate Logo
T#:41289770
Part#: 11531730470TKT
In Stock
$ 93.48 USD
Free Shipping on orders $49 and up
This BMW Thermostat Replacement Kit is the go-to choice for preserving the performance and reliability of your classic M20-powered BMW—keeping your engine running cool and smooth mile after mile.
Show More Show Less
Water Pump & Thermostat Replacement Kit - E23, E24, E28 M30 ...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Packaged by Turner - Corporate Logo
T#:30397451
Part#: 11531251041KT2
Ships in 1 day
$ 223.99

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

$ 220.99 USD
Free Shipping on orders $49 and up
$ 220.99 USD
Free Shipping on orders $49 and up

A well-known issue in BMW models is the water pump, which typically requires servicing every 60,000 miles. To ensure your vehicle's cooling system remains in peak condition, it's also advisable to replace the thermostat during this maintenance. Thankfully, Turner Motorsport has streamlined this process by combining all the necessary parts into one convenient kit.

If you're aiming to maintain and boost your BMW's cooling system, look no further than this premium kit, expertly assembled by the enthusiasts at Turner Motorsport!

Show More Show Less
OEM Mahle-Behr Thermostat - 80 Degree - E24, E28, E30, E32, E34, E36,...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
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
Show More Show Less

Mishimoto Racing Thermostat - 68 Degree - E24, E28, E30, E32, E34, E3...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
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 

Show More Show Less

Thermostat - 80C
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Wahler - Corporate Logo
T#:594831
Part#: 11531713040
In Stock at Vendor
$ 49.61 USD
Free Shipping on orders $49 and up
Thermostat Housing
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat! For vehicles made in 09/1987 only
URO - Corporate Logo
T#:392721
Part#: 11531730470
In Stock
$ 39.99 USD
Free Shipping on orders $49 and up

This is a quality aftermarket replacement aluminum thermostat housing for cars with the M20 6 cylinder engine - 325e, 325i, 528e, 525i. This is the side of the housing that mounts to the cylinder head and has openings for the various coolant / engine temperature sensors. There are 4 ports for sensors so check your existing housing for the sensor layout.

If you're looking for a Genuine BMW factory replacement part, Turner Motorsport carries the Genuine BMW brand with pride and has the parts you need to complete your next project with confidence.
 

Show More Show Less

OEM Hella Thermostat - E28 M5 E24 M6
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Mahle-Behr - Corporate Logo
T#:2264
Part#: 11531307737
In Stock at Vendor
$ 33.65 USD
Free Shipping on orders $49 and up

Don't take chances! Proper maintenance is required to keep your BMW performing at peak levels. The thermostat is important in keeping your vehicle cool, allowing coolant to pass once the engine has reached a certain temperature. Use a high quality thermostat such as this OEM Hella thermostat to ensure reliability and long engine life.

Hella is a premium manufacturer that supplies automotive parts to numerous car brands across the world. Everything from electrical to mechanical genuine parts have been made and supplied directly to BMW before the vehicles ever leave the production floor. Their high quality, long lasting parts have made them a trusted brand chosen to help keep your BMW on the road for many years to come.

As a leading source of high performance BMW parts and accessories since 1993, we at Turner Motorsport are honored to be the go-to supplier for tens of thousands of enthusiasts the world over. With over two decades of parts, service, and racing experience under our belt, we provide only quality performance and replacement parts.  All of our performance parts are those we would (and do!) install and run on our own cars, as well as replacement parts that are Genuine BMW or from OEM manufacturers. We only offer parts we know you can trust to perform!

 This thermostat fits BMW E28 M5 and E24 M6 with S38 engine.

This item fits the following BMWs:
1987-1988 E28 BMW M5
1987-1989 E24 BMW M6

Show More Show Less
Aftermarket Thermostat Housing - E30 325e 325i, E34 525i - M20 engine...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
MTC - Corporate Logo
T#:359592
Part#: 11531730470
In Stock
$ 33.99 USD
Free Shipping on orders $49 and up

This is the stock aluminum thermostat housing for cars with the M20 6 cylinder engine - 325e, 325i, 528e, 525i. This is the side of the housing that mounts to the cylinder head and has openings for the various coolant / engine temperature sensors. There are 4 ports for sensors so check your existing housing for the sensor layout.

Mission Trading Company is a worldwide leader in the manufacturing of European, Japanese and domestic auto parts. With factories around the world producing parts to the most stringent of standards MTC is there with the parts for your next project.


This item fits the following BMWs:
1984-1991 E30 BMW 325e 325es 325i 325ic 325is 325ix
5/1982-1988 E28 BMW 528e
1989-1990 E34 BMW 525i

Show More Show Less

Thermostat Housing Cover
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
URO - Corporate Logo
T#:367144
Part#: 11531265059
In Stock
$ 25.99 USD
Free Shipping on orders $49 and up
Replace your old or cracked thermostat cover

Genuine BMW Thermostat - 80ºC
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:194250
Part#: 11531251041
Ships in 1 day
6% off MSRP $ 85.99

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

$ 80.99 USD
Free Shipping on orders $49 and up
6% off MSRP
$ 85.99

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

$ 80.99 USD
Free Shipping on orders $49 and up


Genuine BMW Thermostat - 80 Cel

Fits BMW Engines including:
M30

Genuine BMW Thermostat Housing - E30 325e 325i, E34 525i - M20 engine...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:12638
Part#: 11531730470
In Stock
5% off MSRP $ 151.99

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

$ 143.99 USD
Free Shipping
5% off MSRP
$ 151.99

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

$ 143.99 USD
Free Shipping

This is the stock aluminum thermostat housing for cars with the M20 6 cylinder engine - 325e, 325i, 528e, 525i. This is the side of the housing that mounts to the cylinder head and has openings for the various coolant / engine temperature sensors. There are 4 ports for sensors so check your existing housing for the sensor layout.

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.
 

This item fits the following BMWs:
1984-1991 E30 BMW 325e 325es 325i 325ic 325is 325ix
5/1982-1988 E28 BMW 528e
1989-1990 E34 BMW 525i

Show More Show Less
Genuine BMW Thermostat - 80ºC
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:206329
Part#: 11531710953
Ships in 1-3 days
5% 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.

$ 56.99 USD
Free Shipping on orders $49 and up
5% 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.

$ 56.99 USD
Free Shipping on orders $49 and up


Genuine BMW Thermostat - 80Cel



Thermostat Cover
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
URO - Corporate Logo
T#:384802
Part#: 11531268650
Ships in 1 Business Day
$ 32.99 USD
Free Shipping on orders $49 and up
Made to fit just like the stock unit, this replacement will get your coolant system back in top shape quickly. Broken, cracked, or brittle flanges are no longer a problem. Take the worries out of your morning commute with an inexpensive piece of mind.
Show More Show Less
Genuine BMW Thermostat Housing Cover
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:6880
Part#: 11531265059
Ships in 1 day
5% off MSRP $ 36.99

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

$ 34.99 USD
Free Shipping on orders $49 and up
5% off MSRP
$ 36.99

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

$ 34.99 USD
Free Shipping on orders $49 and up


Genuine BMW Cover -
This item fits the following BMW Chassis:
E30,E34

Fits BMW Engines including:
M20

BMW Thermostat Replacement Kit - E28, E30, E34 M20B25/27
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:578628
Part#: 11531730470K1KT
Ships in 1-2 days
$ 219.99 USD
Free Shipping
$ 219.99 USD
Free Shipping

Genuine BMW Thermostat - 80°C - E30 M20 2.7L
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:367659
Part#: 11531265085
Ships in 2 Business Days
5% 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.

$ 56.99 USD
Free Shipping on orders $49 and up
5% 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.

$ 56.99 USD
Free Shipping on orders $49 and up

Genuine BMW Thermostat Cover
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:6900
Part#: 11531268650
Ships in 2 Business Days
6% off MSRP $ 46.99

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

$ 43.99 USD
Free Shipping on orders $49 and up
6% off MSRP
$ 46.99

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

$ 43.99 USD
Free Shipping on orders $49 and up


Genuine BMW Cover -
This item fits the following BMW Chassis:
E34

Fits BMW Engines including:
M30

Engine Coolant Thermostat Housing - E28
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:35797
Part#: 11531279456
Ships in 5 Business Days
5% off MSRP $ 224.99

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

$ 212.99 USD
Free Shipping
5% off MSRP
$ 224.99

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

$ 212.99 USD
Free Shipping
Genuine BMW COVER

Thermostat - 80°C
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Mahle-Behr - Corporate Logo
T#:381058
Part#: 11531254065
Back Ordered
$ 23.99 USD
Free Shipping on orders $49 and up
Thermostat - 80°C
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Mahle - Corporate Logo
T#:594737
Part#: 11531254065
Back Ordered
$ 22.99

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

$ 21.99 USD
Free Shipping on orders $49 and up
$ 21.99 USD
Free Shipping on orders $49 and up
The thermostat on your vehicle controls the flow of coolant based on temperature. When you just start your engine, the thermostat remains closed to accelerate the warm up process. After a few minutes, it opens up to allow the warm fluid to flow. If your vehicle is overheating but not blowing warm air from the heater, the problem is more than likely your thermostat.
Show More Show Less

Rein Thermostat O-Ring (60 X 3.5 mm) - E28 E30 E32 E34 E36 E39 Z3 E23...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Rein - Corporate Logo
T#:591144
Part#: 11531265084
In Stock
$ 2.05 USD
Free Shipping on orders $49 and up
This O-ring seals the thermostat to the cylinder head.

Coolant Hose
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
URO - Corporate Logo
T#:373138
Part#: 11531266459
Ships in 1 Business Day
$ 3.99 USD
Free Shipping on orders $49 and up
Water pump to thermostat housing
Rein Thermostat 80C - E30 325e, E28 535i, E24 633CSi
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Rein - Corporate Logo
T#:34114243
Part#: 11531710953
Back Ordered
$ 19.99 USD
Free Shipping on orders $49 and up

Thermostat 80C is a crucial component for controlling the temperature in BMW engines, ensuring optimal performance and protection. Designed to open at 80°C, this thermostat helps your engine reach its ideal operating temperature quickly while preventing overheating. Engineered specifically for BMW vehicles, the Thermostat 80C ensures precise temperature regulation, enhancing both engine efficiency and longevity. Available at Turner Motorsport, this direct-fit replacement offers easy installation and reliable performance.

  • Designed for BMW engines for a perfect fit
  • Opens at 80°C to regulate coolant flow and maintain optimal temperature
  • Prevents overheating and improves engine efficiency
  • Manufactured from high-quality, durable materials for long-lasting use
  • Direct-fit replacement ensures hassle-free installation
  • Enhances overall engine performance and longevity

The Thermostat 80C from Turner Motorsport is the perfect choice for BMW owners looking to maintain optimal engine temperature, ensuring smooth operation and extending the life of their vehicle.

Show More Show Less
Mahle Thermostat - 80�C - E12, E23, E24, E28
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Mahle - Corporate Logo
T#:591826
Part#: 11539055588
Back Ordered
$ 22.99

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

$ 21.99 USD
Free Shipping on orders $49 and up
$ 21.99 USD
Free Shipping on orders $49 and up
Stop your overheating problem.