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Rein BMW Thermostats

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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Rein Thermostat - 88�C - E30, E34, E36, Z3
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T#:591800
Part#: 11537511580
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Sale - Save 5% $ 37.99

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06-29-2026

$ 36.09 USD
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$ 37.99

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06-29-2026

$ 36.09 USD
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Common point of failure in the cooling system.
Thermostat Housing W/ Thermostat Kit
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T#:599063
Part#: 11538674895
In Stock
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This product was last offered at the strikethrough price on
06-29-2026

$ 104.49 USD
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06-29-2026

$ 104.49 USD
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Thermostat With Housing
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T#:582356
Part#: 11537509227
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Sale - Save 5% $ 89.99

This product was last offered at the strikethrough price on
06-29-2026

$ 85.49 USD
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$ 89.99

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$ 85.49 USD
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Stop leaks before they start with this new Thermostat With Housing from Rein.

Rein Thermostat With Housing 88C - E70, E90
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T#:555019
Part#: 11517805811
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Sale - Save 6% $ 63.99

This product was last offered at the strikethrough price on
06-29-2026

$ 59.95 USD
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$ 63.99

This product was last offered at the strikethrough price on
06-29-2026

$ 59.95 USD
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Rein Thermostat With Housing 88C is designed to maintain precise engine temperature control in your vehicle's cooling system. This premium thermostat, featuring an 88°C temperature rating, ensures optimal cooling performance by regulating coolant flow, preventing overheating, and enhancing overall engine efficiency. Built with a durable housing, this thermostat is an ideal replacement for your factory part, offering reliable fitment and long-lasting performance.

Available at Turner Motorsport, the Rein Thermostat With Housing 88C is engineered to withstand extreme conditions, ensuring consistent operation even under heavy loads. This OE-quality component is a must-have for maintaining your car’s peak performance and fuel efficiency.

  • 88°C thermostat for precise engine temperature regulation
  • Integrated housing for easy installation and superior durability
  • Prevents engine overheating and improves cooling system efficiency
  • Designed for a direct fit and easy replacement
  • Available at Turner Motorsport, your trusted source for automotive parts

Upgrade your vehicle’s cooling system with the Rein Thermostat With Housing 88C and enjoy enhanced engine performance and longevity.

In German, Rein means Pure. In the automotive industry the Rein name has quickly come to represent quality. With fitments for some of the world’s finest automobiles including BMW and Mini and guaranteed OE quality, Rein is a name you can trust.

Includes gasket and O-rings

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Automatic Transmission Thermostat
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T#:13661147
Part#: 17111437362
Ships on Jul 22, 2026
Sale - Save 5% $ 43.77

This product was last offered at the strikethrough price on
06-29-2026

$ 41.58 USD
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$ 43.77

This product was last offered at the strikethrough price on
06-29-2026

$ 41.58 USD
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This unit controls the temperature of your automatic transmission fluid
Rein Thermostat O-Ring (60 X 3.5 mm) - E28 E30 E32 E34 E36 E39 Z3 E23...
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T#:591144
Part#: 11531265084
In Stock
Sale - Save 5% $ 2.05

This product was last offered at the strikethrough price on
06-29-2026

$ 1.95 USD
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$ 2.05

This product was last offered at the strikethrough price on
06-29-2026

$ 1.95 USD
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This O-ring seals the thermostat to the cylinder head.

Rein Thermostat - 92C
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T#:34114254
Part#: 11537511083
In Stock at Vendor
Sale - Save 5% $ 11.99

This product was last offered at the strikethrough price on
06-29-2026

$ 11.39 USD
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$ 11.99

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$ 11.39 USD
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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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Rein - Thermostat Assembly 82C - X5 M62, X5 N62
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T#:34080721
Part#: 17107559966
Ships in 3 Business Days
Sale - Save 12% $ 51.99

This product was last offered at the strikethrough price on
04-28-2026

$ 45.92 USD
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$ 51.99

This product was last offered at the strikethrough price on
04-28-2026

$ 45.92 USD
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Thermostat Assembly 82C is a high-quality, precision-engineered component designed to regulate the engine's cooling system effectively. Manufactured to meet or exceed OEM specifications, this thermostat helps ensure optimal engine performance by maintaining the ideal operating temperature. Available from Turner Motorsport, this part offers superior durability and reliability for a wide range of vehicle models.

  • Designed for precise temperature control
  • Maintains engine at the optimal 82°C (180°F) temperature
  • Helps prevent overheating and improves fuel efficiency
  • Direct fit replacement for hassle-free installation
  • Manufactured from high-quality materials for long-lasting performance

Upgrade your vehicle's cooling system with this essential Thermostat Assembly 82C, ensuring smooth engine operation under various driving conditions.

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Rein Thermostat Assembly - F Chassis, G-Chassis - B48
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T#:53891628
Part#: 11537644811
Ships in 3 Business Days
New Item
Sale - Save 15% $ 322.99

This product was last offered at the strikethrough price on
06-10-2026

$ 274.43 USD
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$ 322.99

This product was last offered at the strikethrough price on
06-10-2026

$ 274.43 USD
Whether you're managing a fleet of "spirited" daily drivers or prepping a chassis for the circuit, the Rein CTA0079 offers the peace of mind that comes with OE-quality engineering.

Rein Thermostat - E70, E71
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T#:403980
Part#: 11537550172
Ships in 1 Business Day
Sale - Save 5% $ 67.99

This product was last offered at the strikethrough price on
06-29-2026

$ 64.59 USD
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$ 67.99

This product was last offered at the strikethrough price on
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$ 64.59 USD
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Replaces failed thermostat or as preventative maintenance for your cooling system
Rein Water Hose - Water Hose To Thermostat Inlet
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T#:17738370
Part#: 11537589949
Ships in 3 Business Days
Sale - Save 5% $ 45.99

This product was last offered at the strikethrough price on
06-29-2026

$ 43.69 USD
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$ 45.99

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Prevents leaks and comebacks from reusing old quick connects and o-rings.
Rein Thermostat Assembly E38 740iL
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T#:34114233
Part#: 11531437526
Ships in 1 Business Day
Sale - Save 5% $ 68.99

This product was last offered at the strikethrough price on
06-29-2026

$ 65.54 USD
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$ 68.99

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Regulates Engine coolant temperature. Comes with aluminum housing, O-ring, and sensor.


Thermostat Housing W/ Thermostat Kit - Priced As Kit CTA0018 ...
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T#:38621399
Part#: 11537534521
Ships on Jul 21, 2026
Sale - Save 5% $ 112.99

This product was last offered at the strikethrough price on
06-29-2026

$ 107.34 USD
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$ 112.99

This product was last offered at the strikethrough price on
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$ 107.34 USD
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Rein Thermostat 80C - E30 325e, E28 535i, E24 633CSi
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T#:34114243
Part#: 11531710953
Back Ordered
Sale - Save 5% $ 19.99

This product was last offered at the strikethrough price on
06-29-2026

$ 18.99 USD
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This product was last offered at the strikethrough price on
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$ 18.99 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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