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BMW Cooling System Parts & Accessories for BMW 3 Series E92 (2007-2013)

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The cooling system is arguably the weakest point in numerous BMWs. If you drive an aging BMW or plan on taking your car to the track like we do, we recommend beefing up your cooling system before going to the track. Generally, the main components in your cooling system that are prone to failure include the following: expansion tank, factory hoses, water pump, thermostat, fan (especially if your vehicle comes factory with a clutch fan), and radiator. Factory BMW expansion tanks are plastic and prone to either breaking off at connection points or combusting. As factory rubber hoses age they either crack or break over time - we offer silicone cooling hose upgrades for most applications to avoid future failures. If you have an older vehicle, your water pump likely comes from the factory with a plastic impeller - we offer upgraded water pumps with metal impellers that are far more reliable. Newer model BMWs utilize electric water pumps - BMW spent millions of dollars engineering these water pumps, but they fail so often that we recommend replacing at 60,000 mile service intervals to avoid being stranded on the side of the road. In terms of thermostats, we offer various upgraded thermostats for racing applications. If your BMW utilizes a clutch fan from the factory, we have several options available in terms of universal electric fans - we recommend replacing these to avoid sending brittle plastic fan blades through your hood. For radiators, we recommend swapping out your radiator for one that does not use plastic connection points like your factory radiator.

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Water Pump And Thermostat Kit - BMW N52 3.0L

T#:17073598

Part#: 11537549476KT

In Stock

Sale - Save 25% $ 424.99

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

$ 318.83 USD

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$ 424.99

This product was last offered at the strikethrough price on
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$ 318.83 USD

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Includes everything you may need to replace your water pump and thermostat.

BMW N54 N55 S55 Mosselman Thermostat Installation Kit

T#:4799665

Part#: THERMINSTALLKT

In Stock

Sale - Save 6% $ 22.99

This product was last offered at the strikethrough price on
06-15-2026

$ 21.64 USD

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$ 22.99

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$ 21.64 USD

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BMW N54 N55 S55 Mosselman Thermostat Installation Kit is designed to ensure a seamless installation of the Mosselman thermostat on BMW engines. This comprehensive kit from Turner Motorsport includes all necessary gaskets and components, guaranteeing a reliable and precise installation for optimal engine performance.

Complete Kit: Includes all essential gaskets and components required for a hassle-free thermostat installation.
Optimal Performance: Ensures proper installation of the Mosselman thermostat, leading to improved engine cooling efficiency and performance.
High-Quality Components: Gaskets and parts are manufactured to meet high standards of durability and reliability.
Precision Fit: Engineered to match OEM specifications, providing a perfect fit and reliable performance.
Ease of Installation: All necessary parts are included, simplifying the installation process and reducing the need for additional purchases.

Upgrade your BMW's cooling system with the Mosselman Thermostat Installation Kit from Turner Motorsport, ensuring a top-quality, reliable setup for your engine.

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Cooling System Hose Kit

T#:24212306

Part#: E9XN52CHKT

Ships on Sep 28, 2026

Sale - Save 8% $ 189.99

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

$ 174.22 USD

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$ 189.99

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

$ 174.22 USD

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Replace your cooling system hoses with this complete kit including coolant

Performance Water Pump And Thermostat Kit

T#:15710799

Part#: 11517632426-KT

In Stock

Sale - Save 20% $ 514.99

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

$ 410.34 USD

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$ 514.99

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

$ 410.34 USD

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The stock thermostat is designed to open at 97C. This leaves your engine running fairly hot, and running for quite awhile before your thermostat will begin operation. With the Mishimoto Racing thermostat, the activation temperature becomes 74C. That's 23C cooler, meaning you can rest easy knowing your engine will stay cooler to help avoid all the problems that can be associated with an engine running hot. The water pumps in these BMW models are known for failure near 80,000 miles is a very common issue often times leaving the owner stranded. This kit provides a single stop for water pump and thermostat replacement needs to save the search and get you back on the road. Mishimoto Racing thermostat Bavarian Autosport water pump Genuine BMW coolant Mounting hardware required for both the thermostat and water pump

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Basic Cooling System Service Kit - E9X M3 S65 - Dry

T#:53891614

Part#: 17112283500KT

Ships in 1 day

$ 540.99

This product was last offered at the strikethrough price on
07-08-2026

$ 523.99 USD

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$ 523.99 USD

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Water Pump and Thermostat Package - N51/N52 Engine - E82 128i, E9X 32...

T#:42873693

Part#: TMS206099GKT

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$ 729.35 USD

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$ 729.35 USD

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Our water pump/thermostat overhaul includes:

Electric Water Pump
Aluminum mounting screws for water pump
Thermostat
Connecting hose from thermostat to water pump
Hose clamps

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Thermostat Installation Kit with Thermostat - N54, N55, S55

T#:55353595

Part#: OTN54.T85KT3

Ships in 4 Business Days

$ 390.23 USD

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$ 390.23 USD

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High oil temperatures are the ultimate enemy of your engine's longevity and performance. If you want to keep pushing your BMW to the limit you need to manage the heat.

Cooling System Refresh Kit - Level 2 - E9x, E82, E88, Z4

T#:42099868

Part#: 11537558523TKT

Back Ordered

Sale - Save 19% $ 829.99

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

$ 671.10 USD

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$ 829.99

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

$ 671.10 USD

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Keep your BMW running at the proper temperature and avoid costly engine repairs with the Cooling System Refresh Kit, the complete maintenance solution trusted by enthusiasts and professionals alike.

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Black Magic Parts Cylinder Head Coolant Flange - BMW N52 N54 N55 3.0L...

T#:38094360

Part#: 601-0003

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$ 24.99 USD

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$ 24.99 USD

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The Black Market Parts (by Precision Raceworks) BMW Billet Coolant Flange was designed as a replacement for the factory plastic flange that is found in the hose that connects the thermostat to the cylinder head. The plastic flange commonly cracks, which leads to coolant loss and engine overheating. Replace your coolant flange before disaster occurs and leaves you stuck on the side of the road.

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Precision Raceworks Coolant Tank & Power Steering Bracket W/ Harness ...

T#:38229115

Part#: 622-0079

In Stock

$ 69.99 USD

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$ 69.99 USD

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The E9X / E8X Coolant Tank & Power Steering Bracket w/ Harness is all of the hardware necessary to relocate your power steering pump and install a factory coolant tank on the driver's side of your vehicle. These are the same high-quality components that are included with our E9X/ E8X relocated inlet kits.

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VTT Complete Blue N54 Coolant Hose Kit

T#:17771579

Part#: VTT-N54-COOLANTB

Ships on Sep 2, 2026

$ 464.99 USD

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$ 464.99 USD

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Upgrade your BMW N54's cooling system with VTT's Billet/Silicone coolant hose upgrade kit. Designed to address common issues with factory plastic connectors and standard coolant hoses, this kit offers premium enhancements for durability and performance. Crafted with Billet 6061-T6 connectors for corrosion resistance and 6-ply molded silicone hoses in factory shapes, it ensures reliability and longevity for your BMW's cooling system.

Upgraded Billet 6061-T6 connectors for enhanced durability
Corrosion-resistant black anodized finish
6-ply molded silicone hoses for superior performance
Factory-shaped design for easy installation

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BMW Blue Engine Coolant Reservoir Cap

T#:38161689

Part#: 201-0393-BLU

In Stock

$ 109.99 USD

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$ 109.99 USD

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BMW Blue Engine Coolant Reservoir Cap is the perfect upgrade for BMW owners looking to enhance both the performance and appearance of their engine bay. Constructed from high-quality billet aluminum, this cap replaces the flimsy plastic factory cap, offering improved durability and a sleek, high-performance aesthetic.

Designed with precision, this coolant reservoir cap incorporates the OEM pressure relief function to maintain proper cooling system operation. Unlike inferior stick-on covers that may loosen over time, this cap is a complete replacement, ensuring a secure, leak-free fit. The blue anodized finish provides superior corrosion resistance, making it a reliable upgrade for daily drivers and track enthusiasts alike.

OEM pressure relief function – Ensures proper cooling system performance and safety
Billet aluminum construction – Provides enhanced durability and strength over factory plastic caps
Direct-fit replacement – Fully replaces the stock cap for a precise, secure fit
Blue anodized finish – Resists corrosion, heat, and wear for long-lasting performance
Motorsport-inspired design – Adds a sleek, professional look to the engine bay
Built for longevity – Engineered to withstand extreme temperatures and coolant exposure

Upgrade your BMW’s cooling system with the BMW Blue Engine Coolant Reservoir Cap, designed for superior reliability and style.

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VTT Billet / Silicone Full Coolant Hose Kit - Red - BMW E82/E88 E9X N...

T#:22987117

Part#: VTT-N54-COOLANTR

In Stock

$ 464.99 USD

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$ 464.99 USD

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VTT is proud to announce our N54 Billet/Silicone coolant hose upgrade kit! The factory plastic coolant connectors are prone to breaking over time, and the hoses are just your standard run of the mill coolant hose. We wanted to provide an upgrade to both areas. What we came up with is Billet 6061-T6 connectors anodized black for corrosion resistance, and 6 ply silicone molded silicone hoses in the factory shapes. Full hose kit includes: Upper Radiator hose Lower Radiator hose Cylinder head outlet hose (Mickey Mouse hose, this hose is notorious for breaking when removed) Upper vent hose (this hose is also notorious for breaking as stock the center is plastic that crumbles when moved) Water pump inlet hose (Horse Shoe hose)

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BMW Black Engine Coolant Reservoir Cap

T#:38161688

Part#: 201-0393-BLK

Ships in 9 Business Days

$ 109.99 USD

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$ 109.99 USD

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BMW Black Engine Coolant Reservoir Cap is a premium upgrade designed to enhance both the functionality and aesthetics of your BMW’s engine bay. Unlike flimsy plastic OEM caps, this high-performance cap is CNC-machined from durable billet aluminum, providing long-lasting strength and a sleek, motorsport-inspired look.

Built with precision, this cap retains the essential OEM pressure release function, ensuring proper cooling system operation without compromise. Unlike inferior adhesive covers that may detach over time, this cap fully replaces the factory component, delivering a secure and reliable fit. With a corrosion-resistant black anodized finish, it withstands extreme temperatures and harsh conditions while elevating your BMW’s under-hood appearance.

OEM pressure regulation – Maintains factory-designed pressure release for optimal cooling performance
CNC-machined billet aluminum – Provides exceptional durability and long-term reliability
Direct replacement – Fully replaces the stock cap, ensuring a perfect fit without modifications
Corrosion-resistant anodized finish – Prevents wear and adds a stealthy, high-performance look
Heat and fluid-resistant design – Built to withstand extreme temperatures and coolant exposure
Enhanced engine bay styling – Offers a sleek, motorsport-inspired upgrade

Upgrade your BMW’s cooling system with the BMW Black Engine Coolant Reservoir Cap, designed for superior performance and long-lasting durability.

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Rogue Engineering Silicone Radiator Hose Kit - E9X M3

T#:13694122

Part#: RADE9X-M3-ONLY

Ships in 9 Business Days

$ 79.00 USD

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$ 79.00 USD

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Benefits of Rogue Engineering Silicone Radiator Hoses More resistant to high temperatures, solvents and oil, when compared to OEM rubber hoses. Temperature ranges from -149° F to 500° F, much larger range than OEM (typical range for OEM is -40o F to +275o F) Our hoses can handle more pressure, with a maximum pressure of 350psi. Our silicone hoses stay flexible, whereas rubber can harden and crack over time. Available only in BLACK color, with discrete RE logo. All Rogue Engineering Silicone Radiator Hose kits come complete with new, replacement hose clamps as the factory ones are not suitable for reuse after long years of service. Application Notes The E9X M3 kit replaces 11537838214 and 11537840661 and fits the following: 2008-2013 E9X M3 (US and Euro) Notes: The E9X M3 hose kit requires the use of OEM connectors from the original hoses.

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Precision Raceworks Driver Side Coolant Tank Brackets - Black Powder ...

T#:38094357

Part#: 601-0055

Ships in 6 Business Days

$ 39.99 USD

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$ 39.99 USD

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This driver-side coolant tank mounting bracket set is ideal for those with relocated inlets or single turbo kits. It enables you to reposition your factory coolant tank to the driver's side of the engine bay. Best of all, it’s fully compatible with all known charge pipes.

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Precision Raceworks Coolant Tank Sensor Extension Harness - BMW E9X E...

T#:1332002

Part#: 201-0050

In Stock

$ 19.99 USD

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$ 19.99 USD

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The E9X/ E8X coolant tank level sensor extension harness is the same great product that comes standard with Precision Raceworks' E9X/ E8X relocated inlet kits. The coolant tank level sensor extension harness is perfect for those running a relocated coolant reservoir tank or 335D coolant reservoir. This harness plugs right into the factory connector allowing you to extend the position of the sensor without the need to splice any wires.

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BMW Silver Engine Coolant Reservoir Cap

T#:38161691

Part#: 201-0393-SIL

Ships in 8 Business Days

$ 109.99 USD

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$ 109.99 USD

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BMW Silver Engine Coolant Reservoir Cap is a premium upgrade for BMW owners looking to enhance both the performance and appearance of their engine bay. Crafted from high-strength billet aluminum, this cap replaces the factory plastic version, offering superior durability and a refined, professional look.

Designed with functionality in mind, it integrates the OEM pressure relief system to ensure your engine's cooling system remains safe and efficient. Unlike adhesive covers, which can peel or wear over time, this cap is a direct-fit replacement, providing a secure and leak-proof seal. The silver anodized finish not only enhances the visual appeal but also ensures resistance to corrosion, high temperatures, and wear, making it perfect for daily driving and track use.

OEM pressure relief integration – Maintains proper cooling system performance and reliability
Durable billet aluminum – Outperforms factory plastic caps in longevity and strength
Precision-machined for perfect fitment – Replaces the stock cap securely, not just a cover
Anodized silver finish – Offers corrosion, heat, and wear resistance
Elevates engine bay aesthetics – Adds a clean, professional appearance
Built for both street and track use – Designed to withstand extreme conditions

Enhance your BMW’s cooling system with the BMW Silver Engine Coolant Reservoir Cap, providing both style and functionality for years to come.

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Bav Auto Temperature Sensor - BMW E39 E46 E9X E60 F01/02

T#:639833

Part#: 13621433076

In Stock

Sale - Save 20% $ 14.99

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

$ 11.99 USD

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$ 14.99

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

$ 11.99 USD

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This is the coolant temperature sensor used in many BMW models from the late-1990s to the mid-2010s. The engine computer relies on the coolant temp to set the fuel mapping for the engine. As the car warms up the computer changes the fuel mixture. If your car is running a bit rich (too much fuel) it could be because this sensor is failing and not sending the correct info to the computer. This sensor is located in a variety of places depending on the engine. But it's one of those easy replacement items 'while you're in there' when doing a water pump or thermostat replacement. From 1974 to 2019, Bavarian Autosport was one of the premier vendors for BMW and MINI auto parts. We are happy to preserve the Bav Auto legacy by continuing to carry their high-quality products into the future. All Bav Auto parts will remain unchanged in design and sourced from the same OEM suppliers to ensure long-lasting reliability. We trust these parts, accessories, and upgrades so confidently that we back every Bavarian Autosport branded component with a 2-year warranty.

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