BMW Thermostats for BMW 3 Series E30 (1984-1991)

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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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Packaged by Turner - Corporate Logo
T#:30397424
Part#: 11531730470KT2
In Stock
Sale - Save 10% $ 174.99

This product was last offered at the strikethrough price on
04-21-2026

$ 158.06 USD
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Sale - Save 10%
$ 174.99

This product was last offered at the strikethrough price on
04-21-2026

$ 158.06 USD
Free Shipping on orders $49 and up

Over time, the water pump in BMW vehicles becomes a common point of failure, typically requiring replacement around the 60,000-mile mark. To ensure optimal performance of your vehicle's cooling system, it's also advisable to replace the thermostat during this service. Turner aims to make this maintenance task easier with its all-in-one Water Pump & Thermostat Replacement Kit.

This comprehensive kit includes:

Water Pump - OEM Geba (11519071562) 80°C Thermostat - OEM MAHLE (11531713040) Thermostat Housing - URO Parts (11531730470) Thermostat Housing Gasket - Genuine BMW (11531722692) Antifreeze/Coolant, 1 Gallon - Genuine BMW (82141467704) Opt for this premium kit to ensure a thorough and reliable repair, extending the lifespan of your BMW's cooling system.

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Packaged by Turner - Corporate Logo
T#:30198008
Part#: 11537511580KT5
Ships on Sep 29, 2026
Sale - Save 3% $ 118.99

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

$ 115.90 USD
Free Shipping on orders $49 and up
Sale - Save 3%
$ 118.99

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

$ 115.90 USD
Free Shipping on orders $49 and up

Regular maintenance is key to keeping your BMW running smoothly, and the water pump is a critical component that should be serviced every 60,000 miles. To ensure the overall efficiency of your cooling system, it's also recommended to replace the thermostat at the same time. Turner Motorsport has created a streamlined solution with their Water Pump & Thermostat Replacement Kit, making your cooling system upgrade simple and effective.

Kit Includes:

Meyle Water Pump with Metal Impeller (11510393338) VEMO Thermostat - 88°C (11537511580) Elring Thermostat Housing Flange Gasket (11531721172) Genuine BMW Coolant/Antifreeze (82141467704) Benefits:

Enhanced Cooling Efficiency: Earlier opening thermostat improves temperature control under performance conditions. Reliable Components: Includes high-quality parts from Meyle and VEMO, known for their durability and reliability. Complete Solution: All necessary components for a comprehensive cooling system refresh in one convenient kit. Performance-Driven Design: Ideal for those looking to maintain and enhance the cooling capabilities of their S55 engine.

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Packaged by Turner - Corporate Logo
T#:41289770
Part#: 11531730470TKT
Ships in 3 Business Days
Sale - Save 22% $ 93.99

This product was last offered at the strikethrough price on
06-08-2026

$ 73.38 USD
Free Shipping on orders $49 and up
Sale - Save 22%
$ 93.99

This product was last offered at the strikethrough price on
06-08-2026

$ 73.38 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.
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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

$ 35.99 USD
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$ 35.99 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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MTC - Corporate Logo
T#:359592
Part#: 11531730470
Ships in 6 Business Days
$ 33.99 USD
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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

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Rein Thermostat - 88�C - E30, E34, E36, Z3
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Rein - Corporate Logo
T#:591800
Part#: 11537511580
In Stock at Vendor
$ 37.99 USD
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Common point of failure in the cooling system.

Rein Thermostat O-Ring (60 X 3.5 mm) - E28 E30 E32 E34 E36 E39 Z3 E23...
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
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This O-ring seals the thermostat to the cylinder head.
Rein Thermostat 80C - E30 325e, E28 535i, E24 633CSi
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Rein - Corporate Logo
T#:34114243
Part#: 11531710953
In Stock
$ 19.99 USD
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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.

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