BMW E46 M54 AAF Low Temp Thermostat Kit - Partial is an essential upgrade for enthusiasts looking to optimize engine performance and reliability. Developed by Advanced Auto Fabrication (AAF), this kit addresses the limitations of the factory M54 thermostat, which maintains a temperature range of 80-103°C and opens the mechanical failsafe at 110°C. For race conditions where maintaining a lower temperature is crucial, this kit replaces the stock electronic thermostat with a manual unit, allowing the engine to run at a safer and more efficient temperature. This upgrade not only enhances engine longevity but also reduces stress from high-temperature operation, minimizes heat soak, and increases power.
Partial Kit Contents:
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.
BMW N55 3.0L Thermostat Assembly is an essential component for maintaining optimal engine temperature in your BMW, ensuring reliable performance and longevity. A common source of cracks and leaks, the thermostat assembly plays a critical role in regulating coolant flow. This high-quality replacement from Turner Motorsport is designed to meet or exceed OEM standards, providing a dependable solution to prevent overheating and maintain your engine's efficiency.
This product was last offered at the strikethrough price on
09-29-2026
This product was last offered at the strikethrough price on
09-29-2026
BMW F25 F26 N54 N55 Thermostat Assembly is crucial for maintaining your vehicle's optimal cooling performance. If your BMW is experiencing cooling issues, the thermostat could be the culprit. Common symptoms include prolonged engine warm-up at highway speeds if the thermostat is stuck open, or consistent overheating if it’s stuck closed. Both conditions can lead to poor performance and potential damage to essential engine components.
Upgrade your BMW’s cooling system with the BMW F25 F26 N54 N55 Thermostat Assembly from Turner Motorsport to ensure reliable engine performance and prevent overheating issues.
This product was last offered at the strikethrough price on
09-04-2026
BMW F30 B58 Electronic Thermostat And Coolant Distribution Module from Turner Motorsport is an essential component for maintaining precise engine temperature control. Managed by the vehicle’s computer, this thermostat ensures optimal performance and efficiency by regulating engine and coolant temperatures accurately.
This product was last offered at the strikethrough price on
05-07-2026
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.
This product was last offered at the strikethrough price on
10-22-2026
If your vehicle is struggling with cooling problems, the thermostat might be to blame. Symptoms such as extended warm-up times on the highway due to a thermostat stuck open or persistent overheating from a thermostat stuck closed can significantly impact performance and damage critical engine components.
Fortunately, URO Parts provides an exceptional replacement solution. Their high-quality thermostat is designed to match the functionality of the original factory unit, ensuring your vehicle operates at the correct temperature once again.
Key Features:
Guaranteed Fit: Designed for perfect compatibility, ensuring a hassle-free installation. Efficient Cooling: OE-style high-flow design promotes optimal engine cooling performance. Easy Installation: The thermostat housing assembly matches factory dimensions for quick bolt-on installation and secure hose connections. Comprehensive Compatibility: Includes ports for temperature sensors where necessary. Durable Construction: Made from high-quality alloy or composite materials that resist warping and cracking, preventing coolant leaks. URO Parts offers an extensive range of over 8,000 premium spare parts, specializing in replacements for factory BMW components. Their commitment to excellence is reflected in their meticulous manufacturing standards, focusing on precision, durability, and value. For reliable and affordable replacement parts, trust URO Parts to keep your vehicle running smoothly.
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.
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
This product was last offered at the strikethrough price on
07-14-2026
BMW B46 B48 Thermostat With Housing And Gasket is an essential component for maintaining optimal engine performance and cooling efficiency. This high-quality thermostat comes complete with housing and gasket, ensuring a precise fit and reliable operation.
The thermostat plays a crucial role in regulating the flow of coolant based on engine temperature. By controlling this flow, it helps maintain the engine at its optimal operating temperature, preventing overheating and ensuring efficient performance.
Ensure your BMW's cooling system is functioning correctly with this reliable thermostat assembly from Turner Motorsport.
If your vehicle is struggling with cooling problems, the culprit could be the thermostat. Look out for signs like prolonged warm-up periods at highway speeds (indicative of a stuck-open thermostat) or consistent overheating (a sign of a stuck-closed thermostat). These issues can lead to performance issues and potential damage to crucial vehicle parts.
Key Features:
Ensured compatibility with your vehicle High-flow OE-style design ensures optimal engine cooling Factory housing dimensions for easy installation and secure hose connections Includes a temperature sensor where needed Constructed from durable alloy or composite material to resist warping or cracking, preventing coolant leaks
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.
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.
This product was last offered at the strikethrough price on
08-24-2026
This product was last offered at the strikethrough price on
08-24-2026
This product was last offered at the strikethrough price on
06-30-2026
This product was last offered at the strikethrough price on
06-10-2026
This product was last offered at the strikethrough price on
05-07-2026
The thermostat neck/housing, often referred to as the highest point on the head, serves a vital function in controlling the flow of coolant back to the pressure tank. If you've noticed symptoms like cracking around the gasket seal or leaks, it's a clear indication that this component is in need of replacement.
This comprehensive kit covers all your replacement needs, featuring:
Ensure your vehicle's cooling system operates flawlessly with this Thermostat Neck/Housing Replacement Kit.
