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:

Packaged by Turner - Corporate Logo
T#:30397451
Part#: 11531251041KT2
Ships in 3 Business Days
$ 223.99

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

$ 222.99 USD
Free Shipping on orders $49 and up
$ 222.99 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
Thermostat Replacement Kit - E28, E30, E34 M20B25/27
10X Entries Into Our F80 M3 Sweepstakes
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.
Show More Show Less
MTC - Corporate Logo
T#:359592
Part#: 11531730470
Ships in 7 Business Days
$ 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

Rein - Corporate Logo
T#:591144
Part#: 11531265084
In Stock at Vendor
Sale - Save 5% $ 2.05

This product was last offered at the strikethrough price on
08-31-2026

$ 1.95 USD
Free Shipping on orders $49 and up
Sale - Save 5%
$ 2.05

This product was last offered at the strikethrough price on
08-31-2026

$ 1.95 USD
Free Shipping on orders $49 and up
This O-ring seals the thermostat to the cylinder head.

Rein Thermostat 80C - E30 325e, E28 535i, E24 633CSi
2X Entries Into Our F80 M3 Sweepstakes
Rein - Corporate Logo
T#:34114243
Part#: 11531710953
In Stock
Sale - Save 5% $ 19.99

This product was last offered at the strikethrough price on
08-31-2026

$ 18.99 USD
Free Shipping on orders $49 and up
Sale - Save 5%
$ 19.99

This product was last offered at the strikethrough price on
08-31-2026

$ 18.99 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