BMW Thermostats for BMW Z3 (1996-2002)

Clear BMW chassis

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 - 88ï¿½C - E30, E34, E36, Z3

2X Entries Into Our F80 M3 Sweepstakes

T#:591800

Part#: 11537511580

In Stock at Vendor

Sale - Save 5% $ 37.99

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

$ 36.09 USD

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Sale - Save 5%

$ 37.99

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

$ 36.09 USD

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Common point of failure in the cooling system.

URO Thermostat & Housing Assembly - E36/Z3 M44

2X Entries Into Our F80 M3 Sweepstakes

T#:5958717

Part#: 11531743017

In Stock

$ 32.99 USD

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$ 32.99 USD

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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. If the thermostat gets stuck closed, it allows no fluid to flow and ends up overheating the coolant already in the engine. If your vehicle is not getting up to temperature when driving, the thermostat is more than likely stuck open. Your engine does not get up to the proper operating temperature where it runs the most efficiently. To fix this problem and get your vehicle's heat restored, replace your thermostat.

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Thermostat With Housing

2X Entries Into Our F80 M3 Sweepstakes

T#:582356

Part#: 11537509227

Ships in 3 Business Days

Sale - Save 5% $ 89.99

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

$ 85.49 USD

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Sale - Save 5%

$ 89.99

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

$ 85.49 USD

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

URO Parts Thermostat Assembly - 11537509227

For vehicles with production date from 09/1998

2X Entries Into Our F80 M3 Sweepstakes

T#:29466801

Part#: 11537509227

In Stock

$ 41.99 USD

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$ 41.99 USD

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The thermostat cover in your BMW, made from plastic, is notorious for failing. After years of exposure to hot coolant, the plastic can crack, leading to significant coolant leaks and potential engine overheating.

URO Parts offers a superior solution with their high-quality thermostat cover, designed to surpass the durability of the original factory part. This replacement thermostat comes complete with a gasket for an effortless service.

Features:

Perfect Fit: Guaranteed fitment ensures a seamless replacement process. Optimal Cooling: High-flow OE-style design ensures efficient engine cooling performance. Easy Installation: Manufactured to factory housing dimensions for straightforward bolt-on installation and secure hose connections. Comprehensive Design: Includes ports for temperature sensors where applicable. Superior Materials: Constructed from high-quality alloy or composite materials that resist temperature-induced warping or cracking, preventing coolant leaks. URO Parts, with over 8,000 premium spare parts, specializes in manufacturing precise, durable replacements for factory BMW components. Committed to the highest standards of precision, materials, and workmanship, each part is rigorously tested to deliver the best combination of durability, functionality, and affordability. For reliable replacement parts that offer great value, choose URO Parts.

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Rein Thermostat - 92C

2X Entries Into Our F80 M3 Sweepstakes

T#:34114254

Part#: 11537511083

In Stock

Sale - Save 5% $ 11.99

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

$ 11.39 USD

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Sale - Save 5%

$ 11.99

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

$ 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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