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Packaged by Turner BMW Cooling System Parts & Accessories

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
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T#:17073598
Part#: 11537549476KT
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Includes everything you may need to replace your water pump and thermostat.
Water Pump And Thermostat Kit - BMW N55 F Chassis
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T#:39093005
Part#: 11518635090KT6
Ships on Jun 30, 2026
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$ 432.90 USD
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Water Pump And Thermostat Kit - BMW N55 F Chassis

Ensure optimal engine cooling and performance with this high-quality Water Pump And Thermostat Kit - BMW N55 F Chassis. In the mid-2000s, BMW introduced electronically controlled water pumps and thermostats for better temperature regulation and efficiency. However, these components tend to have a shorter lifespan compared to traditional mechanical designs, often failing before BMW’s recommended 80,000-mile service interval.

This complete kit from Turner Motorsport includes premium-quality components that match OEM specifications, providing reliable and efficient cooling system performance. Maintaining a properly functioning cooling system helps prevent overheating, enhances efficiency, and extends engine life.

Signs Your Water Pump and Thermostat May Need Replacement:

  • Engine overheating or failing to reach operating temperature
  • Water pump running intermittently or erratically
  • Cooling fans operating at maximum output
  • Engine fault codes, including 20A804

Upgrade your BMW N55 F Chassis cooling system with this all-in-one kit for worry-free performance and longevity.

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BMW N54 N55 S55 Mosselman Thermostat Installation Kit
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T#:4799665
Part#: THERMINSTALLKT
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$ 22.99 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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Water Pump And Thermostat Kit
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T#:5376274
Part#: 11517586925TKT
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Everything you need to replace your water pump and thermostat. 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. The aftermarket kit offered provides a single stop for water pump and thermostat replacement needs to save the search and get you back on the road. Kit includes: Mahle-Behr thermostat Water pump Genuine BMW coolant thermostat to water pump hose Mounting hardware required for both the thermostat and water pump
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Water Pump And Thermostat Kit - N20
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T#:554053
Part#: 11517604027KT1
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The N20/n26 engined cars already suffer from reduced cooling area because of the factory intercooler, tight space under the hood, and of course heat from the turbo(s). BMW addressed these challenges a number of ways, including a dynamic, 'smart' electric water pump with increased output compared to normally aspirated models. The cooling demands mean additional stress on the major cooling components, especially the water pump and thermostat. 
 

Kit includes:

  • Mahle-Behr thermostat
  • Pierburg water pump
  • Genuine BMW coolant
  • Mounting hardware required for both the thermostat and water pump

 

This item fits the following BMWs: 
2014+ F22 BMW 228i 228i xDrive 
2014+ F23 BMW 228i 228i xDrive 
2012+ F30 BMW 328i 328i xDrive - Sedan 
2013+ F31 BMW 328i xDrive - Wagon 
2013+ F32 BMW 428i 428i xDrive - Coupe 
2013+ F33 BMW 428i Convertible 428i xDrive Convertible - Convertible 
2014+ F34 BMW 328i xDrive GT - Gran Tourismo 
2014+ F36 BMW 428i Gran Coupe 428i xDrive Gran Coupe 
2012+ F10 BMW 528i 528i xDrive 
2011+ F25 BMW X3 xDrive28i 
2015+ F26 BMW X4 xDrive28i 
2009+ E89 BMW Z4 sDrive28i

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Cooling System Hose Kit
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T#:24212306
Part#: E9XN52CHKT
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Replace your cooling system hoses with this complete kit including coolant

BMW F30 N55 Water Pump And Thermostat Kit
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T#:21702998
Part#: F30COLNTN55KT
Ships on Jun 30, 2026
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$ 432.90 USD
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Owners of BMW F30 335i models are all too familiar with the common issue of water pump failure, often occurring around the 80,000-mile mark. This unfortunate occurrence can leave drivers stranded and frustrated. But fear not, as we offer a one-stop solution to tackle your water pump and thermostat replacement needs, saving you precious time and getting you back on the road swiftly. Our comprehensive kit includes: Thermostat: Ensure your engine's optimal temperature regulation with a brand-new thermostat. Electric Water Pump: Replace your problematic water pump with a reliable electric water pump, restoring your vehicle's cooling system to peak performance. Coolant: We provide the necessary coolant to accompany your replacements, ensuring a seamless and efficient installation. Mounting Hardware: We include all the required mounting hardware for both the thermostat and water pump, simplifying the replacement process. Don't let water pump issues disrupt your driving experience. Trust our BMW F30 335i Water Pump and Thermostat Replacement Kit to keep your vehicle running smoothly and reliably. Get back on the road with confidence. Kit is for these BMW models: F30 - 335i & 335i xDrive
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Water Pump And Thermostat Kit - E9X M3
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T#:554059
Part#: 11517838201KT4
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The water pumps in BMW's should be serviced near 80,000 miles and may become an issue often times leaving the owner stranded. The aftermarket kit offered provides a single stop for water pump and thermostat replacement needs to save the search and get you back on the road.
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Ultimate Water Pump And Thermostat Kit - N54
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T#:5376299
Part#: 11517632426TMSKT
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Add strength to your cooling system and replace your water pump The secret of any reliable performance car is a rock-solid cooling system. Unfortunately, the N54's stock cooling system has several shortcomings that get in the way of reliable, repeatable, dependable performance. Turner Motorsport has spent years behind the wheel of modified N54-powered BMWs, and we've figured out what it takes to keep your N54 cool and happy. Using a combination of in-house designed parts and carefully-selected aftermarket components, we've put together an all-inclusive package that will allow you to replace your water pump and beef up your cooling system at the same time. Here's what's included: New water pump with replacement screws New thermostat Billet thermostat hose adapter (a great replacement for the stock, crack-prone plastic part!) Silicone coolant outlet hose Aluminized silicone water pump hose (aluminized for heat resistance to stay cool!) Heavy Duty aluminum coolant bleed screw (replace the strip-prone plastic screw!) New hose clamps 1 gallon of Genuine BMW coolant (just add distilled water at your desired ratio) Red Line Water Wetter (trust us, this stuff works - we've been running it for years!)Add strength to your cooling system and replace your water pump The secret of any reliable performance car is a rock-solid cooling system. Unfortunately, the N54's stock cooling system has several shortcomings that get in the way of reliable, repeatable, dependable performance. Turner Motorsport has spent years behind the wheel of modified N54-powered BMWs, and we've figured out what it takes to keep your N54 cool and happy. Using a combination of in-house designed parts and carefully-selected aftermarket components, we've put together an all-inclusive package that will allow you to replace your water pump and beef up your cooling system at the same time. Here's what's included: New water pump with replacement screws New thermostat Billet thermostat hose adapter (a great replacement for the stock, crack-prone plastic part!) Silicone coolant outlet hose Aluminized silicone water pump hose (aluminized for heat resistance to stay cool!) Heavy Duty aluminum coolant bleed screw (replace the strip-prone plastic screw!) New hose clamps 1 gallon of Genuine BMW coolant (just add distilled water at your desired ratio) Red Line Water Wetter (trust us, this stuff works - we've been running it for years!)
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Thermostat Replacement Kit - E9X M3
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T#:554084
Part#: 11537836155KT2
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$ 99.87 USD
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When it comes time to replace your thermostat, be sure you have everything you need. This kit includes everything you need to replace your thermostat, including the thermostat.
Complete Cooling System Hose Kit - BMW E46 M52TU M54
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T#:15677507
Part#: 11531436410-KT
Ships on Sep 23, 2026
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The cooling hoses on your BMW are exposed to vast temperature changes, as well as exposure the elements. Over time, they will fail and can cause you to be stranded, or a worse failure. Turner Motorsport has created a kit that includes all of the necessary cooling system hoses as well as a gallon of coolant to correctly service your cooling system. See kit contents tab for a list of included components
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Thermostat Replacement Kit - E82 E9X E84 E70 E71 With N55 Engines ...
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T#:554075
Part#: 11537601158KT2
Ships on Jul 7, 2026
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$ 79.77 USD
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If your vehicle is experiencing cooling issues, chances are the thermostat is the cause. Common symptoms include prolonged warm-up at highway speeds from the thermostat being stuck open, or consistent overheating issues from the thermostat being stuck in the closed position. Either condition can result in poor performance, and potential damage to vital components in your vehicle.

Kit includes

  • Wahler Thermostat
  • 1 liter of Coolant

This item fits the following BMWs: 
2008-2013  E82 BMW  135i 135is 1M Coupe 
2013+  E84 BMW  X1 xDrive35i 
2011  E90 BMW  335i 335xi 335i xDrive - Sedan 
2011-2013  E92 BMW  335i 335xi 335i xDrive - Coupe 
2011-2013  E93 BMW  335i Convertible 
2011-2013  E70 BMW  X5 xDrive35i 
2011-2013  E71 BMW  X6 xDrive35i

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Comprehensive Coolant Hose Kit - E30 M20
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T#:41897490
Part#: E30M20HSTKT
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This Comprehensive Coolant Hose Kit – E30 is a must-have for any BMW M20 enthusiast looking to maintain cooling efficiency and avoid future breakdowns. Restore your classic E30’s performance and reliability with a hose kit built to last.
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Thermostat Replacement kit - 90C
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T#:15744051
Part#: 82142209769KT
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$ 142.66 USD
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Thermostat Replacement Kit - E46 M3
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T#:554082
Part#: 11531318274KT2
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$ 122.99

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$ 97.99 USD
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When it comes time to replace your thermostat, be sure you have everything you need. This kit includes everything you need to replace your thermostat, including the thermostat.

Kit includes:

  • Thermostat
  • Thermostat O-Ring
  • 1.5 Liters of coolant

 

This item fits the following BMWs: 
2001-2006 E46 BMW M3 

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Performance Water Pump And Thermostat Kit
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T#:15710799
Part#: 11517632426-KT
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$ 410.26 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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Water Pump - E46 M3
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T#:337986
Part#: 11517838118
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The E46 M3 does not suffer from the cooling nightmares of the previous E36 models. The original water pump uses a composite impeller, not plastic or metal, so the BMW pump will typically last 85,000+ miles before the bearings show signs of wear (the composite impeller is not the reason for preventative maintenance - it's the bearings). We prefer the OE BMW pump to the aftermarket brands because it uses the composite impeller, it has a proven reliability record, and the pricing represents a solid value upgrade. The pump is located on the front of the engine with the fan attached to it. The complexity of the S54 engine means the water pump has multiple gaskets and seals that should also be replaced. And if the thermostat has not been changed then this is the best time for a new one as well.

Optional Gaskets
The S54 water pump has multiple gaskets and O-rings that should be replaced at the same time. The water pump does not come from BMW with a profile gasket anyway and all of the hoses and thermostat housing have their own seals. We don't recommend re-using the original gaskets so we have an add-on kit that will have you covered during your water pump replacement -
1 x 11531318402, thermostat housing gasket to water pump housing
1 x 11537830709, coolant return pipe on thermostat housing
1 x 11517831099, water pump profile gasket
2 x 11537830712, coolant hose rubber O-rings

Composite vs Metal
BMW designed this water pump to use a composite impeller. It is much stronger than the plastic pieces that were so problematic in the mid-90s. The aftermarket solution to the plastic issues was to use a metal impeller. This solved the impeller issues but created some others. The metal impeller is heavier than composite or plastic and that led to quicker bearing failure on the E36 pump (sometimes within a year). The possibility exists that the same premature bearing failure can happen on the E46 M3 metal impeller pumps as well. The heavier weight also has the drawback of using more horsepower since it requires more effort to move the heavier piece. The composite materials solve all of these issues - light weight, strong, long lasting, and relatively inexpensive. They also come with a two-year warranty (most aftermarket pumps are one year). Original BMW water pumps for the E36 (and most other modern BMWs) now use a composite impeller so any issues with factory pumps are long gone. Original BMW water pumps for the E46 M3 are known to last over 100,000 miles and the composite is still in excellent condition (failure is usually typical leaks from worn bearings). For preventative maintenance we recommend a replacement around 85,000 miles. Alternate part numbers: 11517838118, 11517838159.

This item fits the following BMWs:
2001-2006 E46 BMW M3
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Water Pump And Thermostat Kit - E90 335d E70 X5 35d
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T#:554062
Part#: 11517801063KT2
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The water pumps BMW's should be serviced near 80,000 miles and may become an issue often times leaving the owner stranded. The aftermarket kit offered provides a single stop for water pump and thermostat replacement needs to save the search and get you back on the road.

Kit includes:

  • Facet thermostat
  • Graf water pump
  • Vaico coolant
  • Mounting hardware required for the water pump

 

This item fits the following BMWs: 
2009+ E90 BMW 335d 
2009+ E70 BMW X5 xDrive35d

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Thermostat Replacement Kit - E39 M5
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T#:554086
Part#: 11537835558KT7
Ships in 1-3 days
$ 170.99

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When it comes time to replace your thermostat, be sure you have everything you need. This kit includes everything you need to replace your thermostat, including the thermostat.

Kit includes:

  • Behr thermostat with gasket
  • Thermostat mounting hardware
  • 1 Gal Genuine BMW coolant

 

This thermostat fits the following BMWs: 
1998-2004 E39 BMW M5 

 

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Pierburg Full Aluminum Water Pump With Hardware
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T#:6091465
Part#: 11515A05704APKT
Ships on Oct 14, 2026
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If your water pump is starting to fail, you may notice coolant leaks, or even hear a whining noise coming from under the hood. If you think your water pump is starting to fail, replace it as soon as you can. The main downside to an electric water pump is you may also notice nothing - nothing but overheating! Keep your eyes peeled for warning signs it may be time to replace your water pump. N54 and N55 engines are prone to water pump failure - replace every 60,000 miles. Comes with electric water pump and installation hardware. Aluminum mounting bolts are one time use. Replace every time the water pump is removed.
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Thermostat & Water Pump Kit - E30 325, 325e, 325i
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T#:30397424
Part#: 11531730470KT2
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Over time, the water pump in BMW vehicles becomes a common point of failure, typically requiring replacement around the 60,000-mile mark. To ensure optimal performance of your vehicle's cooling system, it's also advisable to replace the thermostat during this service. Turner aims to make this maintenance task easier with its all-in-one Water Pump & Thermostat Replacement Kit.

This comprehensive kit includes:

Water Pump - OEM Geba (11519071562) 80°C Thermostat - OEM MAHLE (11531713040) Thermostat Housing - URO Parts (11531730470) Thermostat Housing Gasket - Genuine BMW (11531722692) Antifreeze/Coolant, 1 Gallon - Genuine BMW (82141467704) Opt for this premium kit to ensure a thorough and reliable repair, extending the lifespan of your BMW's cooling system.

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Basic Cooling System Service Kit - E83 X3 M54 2.5L 3.0L
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T#:557216
Part#: E83M54BCKT
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Just like the rest of your vehicle's major systems, the cooling system must also be addressed periodically to ensure proper cooling and component reliability. Plastic and rubber components become brittle and prone to splitting or cracking after long periods of heating and cooling cycles, especially in colder climates! The coolant itself can degrade or become contaminated, leading to potential corrosion or freezing issues. Finally, thermostats and sensors can fail completely, preventing proper cooling and/or coolant temperature readings to become inaccurate.

To make sure you are not left stranded on the side of the road with an overheated engine, we have put together this Basic Cooling System Service kit. This kit contains all of the most-likely-to-fail components, giving you peace of mind knowing your engine will continue to run cool for another 60,000+ miles.

See kit contents below for all included components.

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Water Pump Replacement Kit - E60 550i, E63 650i, E65 750i, E70 X5 4.8...
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T#:554067
Part#: 11517531859KT4
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The water pumps in BMW's should be serviced near 80,000 miles and may become an issue often times leaving the owner stranded. The aftermarket kit offered provides a single stop for water pump and thermostat replacement needs to save the search and get you back on the road.

Kit includes:

  • Mahle-Behr thermostat
  • Geba water pump
  • Vaico coolant
  • Mounting hardware required for the water pump


This item fits the following BMWs:
2006-2010 E60 BMW 550i
2006-2010 E63 BMW 650i
2005-2008 E65 BMW 750i 750li
2007-2013 E70 BMW X5 4.8i X5 xDrive48i

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Water Pump & Thermostat Replacement Kit - F25 F26 N55 3.0L ...
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T#:30430672
Part#: 11537586784KT2
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Maintain your BMW's cooling system and avoid costly repairs with our all-inclusive Water Pump and Thermostat Replacement Kit, expertly crafted by enthusiasts at Turner Motorsport. Designed specifically for your BMW model, this kit ensures proper engine operation at optimal temperatures, preventing overheating and extending engine life.

Key Benefits:

Comprehensive Kit: Simplify your cooling system overhaul with all necessary components in one package. High-Quality Parts: Each component meets or exceeds OEM standards, ensuring reliable performance and longevity. Optimal Cooling Performance: Regular water pump and thermostat replacement every 60,000 miles maintains peak cooling efficiency. Enhanced Reliability: Premium components like the Wahler Thermostat and Graf Water Pump ensure durable, long-lasting performance. Why Choose This Kit:

Maximize Cooling System Performance: Replacing your water pump and thermostat simultaneously ensures your BMW’s cooling system operates efficiently. Protect Your Engine: Properly flushing and refilling your cooling system with Genuine BMW coolant guarantees optimal freeze protection and corrosion resistance. Convenient and Cost-Effective: Combining all essential parts in one kit simplifies maintenance and ensures a thorough, lasting repair. Planning a cooling system overhaul? Opt for this comprehensive thermostat and water pump replacement kit for a lasting repair.

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Water Hose Set - E30 M3
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T#:3449
Part#: 11531309667KIT
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This pacakge of six rubber cooling hoses for the E30 M3 includes most of the commonly replaced coolant lines on the S14. Set includes -
  • upper radiator hose from the large metal coolant pipe, #23 in the diagram
  • top thermostat hose to the large metal coolant pipe, #15 in the diagram
  • middle thermostat hose (T-shaped) to the small metal coolant pipe and to the water pump, #13 in the diagram
  • lower thermostat hose to the bottom of radiator, #22 in the diagram
  • lower radiator hose to coolant pipe, #24 in the diagram
  • expansion tank hose to the small metal coolant pipe, #17 in the diagram
    We use a mix if OE BMW and aftermarket hoses that we trust. This is the original E30 M3 Cooling Hose kit that we have been selling for 20 years. Looking for hose clamps too? We have OEM-style clamps for these too, select this in the options list below.

    This item fits the following BMWs:
    1988-1991 E30 BMW M3
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    Water Pump And Thermostat Kit - E70 E71 F01 F02 F06 F07 F10 F12 F13 ...
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    T#:554065
    Part#: 11517548263KT3
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    Sale - Save 25% $ 336.99

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    $ 252.19 USD
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    The water pumps in BMW's should be serviced near 80,000 miles and may become an issue often times leaving the owner stranded. The aftermarket kit offered provides a single stop for water pump and thermostat replacement needs to save the search and get you back on the road.

    Kit includes:

    • Thermostat
    • Water pump
    • Coolant

     

    This item fits the following BMW Engines: 
    N63,N63N,S63,N62N 

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    Water Pump & Thermostat Kit - Gen 1 B46 2.0L
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    T#:35863149
    Part#: 11518638026TKT
    Ships on Jul 29, 2026
    $ 681.66 USD
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    BMW's cooling system has long been a known weak spot, with the water pump and thermostat being two of the most common trouble areas. This remains true even in the latest B-Series engines found in 2016 and newer BMW models. This kit includes a brand-new OEM Pierburg water pump, a Bremmen thermostat (now referred to as a Heat Management Module), and one gallon of BMW's G48 coolant concentrate (enough to make two gallons of 50/50 coolant). Avoid spending thousands at the dealership or over $600 on Genuine BMW parts! These components can be replaced with high-quality OEM parts in just an afternoon using basic hand tools.
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    Basic Cooling System Service Kit - E46 M5X 2.5L 2.8L 3.0L
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    T#:557236
    Part#: E46M5XBCKT
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    Just like the rest of your vehicle's major systems, the cooling system must also be addressed periodically to ensure proper cooling and component reliability. Plastic and rubber components become brittle and prone to splitting or cracking after long periods of heating and cooling cycles, especially in colder climates! The coolant itself can degrade or become contaminated, leading to potential corrosion or freezing issues. Finally, thermostats and sensors can fail completely, preventing proper cooling and/or coolant temperature readings to become inaccurate.

    To make sure you are not left stranded on the side of the road with an overheated engine, we have put together this Basic Cooling System Service kit. This kit contains all of the most-likely-to-fail components, giving you peace of mind knowing your engine will continue to run cool for another 60,000+ miles.

    See kit contents below for all included components.

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    Basic Cooling System Service Kit - E39 540i (09/1998+)
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    T#:557233
    Part#: E39540BCKT2
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    $ 337.85 USD
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    Just like the rest of your vehicle's major systems, the cooling system must also be addressed periodically to ensure proper cooling and component reliability. Plastic and rubber components become brittle and prone to splitting or cracking after long periods of heating and cooling cycles, especially in colder climates! The coolant itself can degrade or become contaminated, leading to potential corrosion or freezing issues. Finally, thermostats and sensors can fail completely, preventing proper cooling and/or coolant temperature readings to become inaccurate.

    To make sure you are not left stranded on the side of the road with an overheated engine, we have put together this Basic Cooling System Service kit. This kit contains all of the most-likely-to-fail components, giving you peace of mind knowing your engine will continue to run cool for another 60,000+ miles.

    See kit contents below for all included components.

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    Complete Cooling System Overhaul Package - 1992-1999 E36 325i/328i/M3...
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    T#:338684
    Part#: TMS2003
    Ships on Aug 10, 2026
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    This product was last offered at the strikethrough price on
    02-27-2026

    Starting at $ 604.34 USD
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    This is a compete cooling system overhaul kit, which includes all of the common E36 cooling system parts bundled into a complete package. The basic overhaul includes: water pump, radiator, radiator hoses, and thermostat. We bundled these together with a package discount for your convenience and savings. Additional items are also available to better cover your cooling system repair. Contact us if you need any other E36 cooling system parts.

    The original E36's primary cooling components were prone to failure within 60k miles (or less in many cases). With better materials over the years we've seen that interval increase and you can now count on your water pump and radiator lasting at least 100,000 miles. That doesn't mean you can set aside preventaive maintenance. A failure in the cooling system can lead to overheating and catastrophic engine failure. Don't gamble your engine! By replacing these core items preventatively, such as the radiator & waterpump, you are defusing what could be a ticking cooling system time bomb. And if you've had a failure of one of these parts, now is the time to refresh your cooling system.

    Top Turner Tip!
    The very earliest E36s had infamous cooling system failures. But those are a thing of the past! We've got the best combination of parts to ensure a bulletproof E36 cooling system and it doesn't have to cost an arm and a leg. Our basic cooling package (OEM radiator and OE BMW water pump with composite impeller) is much better quality than what was available 20 years ago. And we can upgrade the system with full aluminum radiators, silicone hoses, and a stronger water pump. There are no more excuses for a weak E36 cooling system.

    Basic Kit Contents:
    17111469179, radiator (OEM Behr)
    11517527799, water pump (OE BMW)
    11537511580, 88°C thermostat (OEM Behr/Hella)
    11531708499, upper radiator hose (OEM Rein/CRP)
    11531726344, lower radiator hose (OEM Rein/CRP)
    17111742231, expansion tank cap (OEM Behr/Hella)

    Cooling Kit Options:
    E36 Water Pump Options
    (click to expand)
    OE BMW with composite impeller. The original BMW water pumps had plastic impellers which degraded and failed. The latest design uses composites that are much better and will not corrode. Compared to a metal impeller, the composite is lighter so it's more efficient and it will not wear out the bearings. We don't even offer the metal impeller pumps with this kit because the BMW composite one is so much better.
    Stewart high performance. The ultimate in M50 water pumps! It features a stainless steel impeller, heavy-duty bearings, a better o-ring seal, and flows 20% more than the stock pump. If indestructible is what you're looking for, this is the pump to go with. It also comes with a lifetime warranty for piece of mind.
    E36 Radiators
    (click to expand)
    The stock radiator and fan combination has no downside in capacity. But where it lacks is in durability. The plastic tanks and hose necks are prone to cracking and then leaking. If you notice ANY greenish-white staining on the plastic then it's a sure sign of a crack. To avoid the plastic failures altogether, move up to a full aluminum radiator.

    The MZ3 radiator has a thicker core and more capacity. Any time you can store the coolant away from the engine the better it will be. It will have less heat soak and lower overall temperatures.
    The budget aluminum radiator is the same size as stock but obviously doesn't have the plastic.
    The Fluidyne was designed with input from our own techs and race team. It's our go-to radiator for racing and track use.
    E36 Expansion Tank
    (click to expand)
    The original expansion tank is prone to cracks and leakage. Again - it's made from a weak plastic. The material has improved over the years but the only option remains an OEM plastic tank. It's a good idea to replace it if you're doing a whole overhaul. Don't re-use the original tank if you're going to the trouble of replacing everything else!
    E36 Thermostat Housing
    (click to expand)
    The original BMW plastic thermostat housing is brittle and does not seal well. We only sell it under protest. Instead we've been selling this aluminum housing for the last 20+ years. The aluminum does not have the same shortcomings as the plastic one. We made this item an option in case you already have the aluminum housing.

    Use the options below to build your cooling package.

    This cooling system overhaul kit fits the following BMWs:
    1992-1999 E36 BMW 323is 323ic 325i 325is 325ic 328i 328is 328ic M3
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    Turner Electric Fan Conversion - E36 BMW (09/1995+)
    affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
    Packaged by Turner - Corporate Logo
    T#:554687
    Part#: EFANCON1KT
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    $ 366.99 USD
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    $ 366.99 USD
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    Looking to free up horsepower and upgrade your cooling? Then this Electric Fan Conversion kit is the perfect choice! The fan and clutch that connect to the water pump add additional rotating mass to the drive line. By removing them and converting your system to an electric fan, the engine has to do less work, giving you that extra little bit of power. In this kit we include a lower temperature thermostat, coolant additive, and low temperature fan switch that engages the electric fan at a lower temperature, keeping your engine cool and lowering the drag and unneeded weight from the front end of your BMW.

    Included in this kit:

    • 80 degree Celsius thermostat
    • 1 liter of Genuine BMW coolant
    • Water Wetter coolant additive
    • Low-temperature coolant temperature sensor/switch
    • 16 inch Electric fan 
    • Electric fan mounting kit
    • Fan controller kit with probe sensor 
    • Fan delete nut

    Fits the following BMWs:
    09/1995-1999 E36 BMW 323is/ic 328i/is/ic M3

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    Gen1 B58 Water Pump Replacement Kit - BMW F22/23 F3X B58 3.0L ...
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    Packaged by Turner - Corporate Logo
    T#:27871814
    Part#: 11518632585TKT
    Ships on Sep 4, 2026
    Sale - Save 3% $ 156.99

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    01-31-2026

    $ 152.79 USD
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    If your water pump is leaking coolant, there is a good chance one of the seals has failed. This is especially common when your coolant level gets too low and your BMW's water pump runs without coolant. The water pump shaft seal can fail as it gets too hot and you will begin to notice coolant dripping from the weep hole found at the bottom of your pump. We recommend replacing the whole pump to ensure your BMW stays cool for many more years! This kit includes the basic parts necessary to replace your water pump: GEBA Mechanical Pump with an upgraded metal impeller Elring Water Pump Gasket Genuine BMW Water Pump Bolts (x6) Don't forget to pick up a gallon of BMW coolant as well to top your system back off once you have completed your pump installation! Servicing your accessory belt and tensioner is also great to do at this time as the belt must be removed before replacing your pump.
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    Complete Cooling System Overhaul Package - 1999-2006 E46 323i 325i 32...
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    T#:340196
    Part#: E46COOLINGPACK
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    This product was last offered at the strikethrough price on
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    Starting at $ 548.55 USD
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    This is a compete cooling system overhaul kit, which includes all the common E46 cooling system failure parts bundled into a complete package. This cooling system package is for all of the non-M E46 3 series -- those made in 1999-2005 as well as 2006 coupes and convertibles.

    The E46 cooling system is much like that of the previous generation 3 series. Several of the primary cooling components are prone to failure within 60k miles (or less in many cases). A failure in the cooling system can lead to overheating and catastrophic engine failure. Don't gamble your engine! By replacing these core items preventatively, such as the radiator & waterpump, you are defusing what could be a ticking cooling system time bomb. And if you've had a failure of one of these parts, now is the time to refresh your cooling system. Our kit includes one OEM Behr radiator, an Original BMW water pump (with updated composite impeller), thermostat (complete with housing), radiator cap, and new hoses (as pictured).

    Optional items (which can be added below):
    - Original BMW antifreeze
    - Upgrade the water pump to a Stewart EMP High Performance pump
    - Add a new coolant expansion tank (known for cracking)
    - Add a new coolant level sensor (known for failing / throwing "check coolant" messages)

    This cooling system overhaul kit fits the following BMWs:
    1999-2000 E46 3 Series Sedan/Wagon - 323i & 328i
    1999-2000 E46 3 Series Coupe/Convertible - 323Ci & 328Ci
    2001-2005 E46 3 Series Sedan/Wagon - 325i, 325xi, 330i, 330xi
    2001-2006 E46 3 Series Coupe/Convertible - 325Ci, 330Ci
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    Performance Water Pump & Thermostat Kit - 90*C - S63
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    T#:30397428
    Part#: 11537843738KT2
    Ships on Oct 14, 2026
    $ 579.99

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

    $ 541.99 USD
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    $ 541.99 USD
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    The water pump is a known weak point across all BMW models, requiring servicing every 60,000 miles. Along with the water pump, it’s wise to replace the thermostat to ensure your cooling system operates at peak efficiency.

    This kit features a 90°C (194°F) thermostat from Hamburg Technic, which opens approximately 15°C earlier than the standard factory thermostat. This lower temperature is particularly advantageous for performance-focused applications.

    What's Included:

    Genuine BMW Mechanical Water Pump Assembly (11537843738) Hamburg Technic Performance Thermostat - 90°C/194°F (11537586885) Genuine BMW Coolant/Antifreeze - Diluted, 1 Gallon (82141467704) Benefits of a Lower Thermostat Temperature:

    Enhanced Engine Cooling: Opens sooner to reduce engine temperature more effectively. Improved Performance: Keeps engine components cooler, allowing for better performance in high-stress conditions. Extended Engine Life: Reduces thermal stress on engine parts, promoting longevity. Prevents Overheating: Helps to avoid overheating in demanding driving scenarios. Optimized Fuel Efficiency: Maintains ideal engine temperature for efficient fuel combustion. Elevate your BMW's cooling system and performance with this expertly curated kit from Turner Motorsport.

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    Water Pump & Thermostat Replacement Kit - 90*C - F8X M2 M3 M4 S55...
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    Packaged by Turner - Corporate Logo
    T#:30197967
    Part#: 11517846361KT4
    Ships on Oct 14, 2026
    $ 487.99

    This product was last offered at the strikethrough price on
    02-03-2026

    $ 422.99 USD
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    $ 422.99 USD
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    The water pump is a known weak point across all BMW models, requiring servicing every 60,000 miles. Along with the water pump, it’s wise to replace the thermostat to ensure your cooling system operates at peak efficiency.

    This kit features a 90°C (194°F) thermostat from Hamburg Technic, which opens approximately 15°C earlier than the standard factory thermostat. This lower temperature is particularly advantageous for performance-focused applications.

    What's Included:

    Genuine BMW Mechanical Water Pump Assembly (11517846361) Hamburg Technic Performance Thermostat - 90°C/194°F (11537586885) Genuine BMW Coolant/Antifreeze - Diluted, 1 Gallon (82141467704) Benefits of a Lower Thermostat Temperature:

    Enhanced Engine Cooling: Opens sooner to reduce engine temperature more effectively. Improved Performance: Keeps engine components cooler, allowing for better performance in high-stress conditions. Extended Engine Life: Reduces thermal stress on engine parts, promoting longevity. Prevents Overheating: Helps to avoid overheating in demanding driving scenarios. Optimized Fuel Efficiency: Maintains ideal engine temperature for efficient fuel combustion. Elevate your BMW's cooling system and performance with this expertly curated kit from Turner Motorsport.

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    High-Performance Cooling System Service Kit - Level 3
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    T#:41391174
    Part#: 008682LA02RF3KT
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    Due to weak rubber and plastic construction, vital cooling system parts are prone to premature failure. Key components, such as radiator hoses, the thermostat, and the expansion tank are particularly prone to cracks, leaks, and catastrophic failure, which can lead to overheating and potentially severe engine damage. Fortunately, our team of experts has assembled this kit of high-performance alternatives and high-quality OE replacement components, both tailored to safeguard your cooling system from failure and increase cooling system capability.

    Our Level 3 High-Performance Cooling System Service Kit is the ultimate solution for ensuring long-term reliability and enhanced cooling performance. Each component in this comprehensive kit has been carefully selected by our team of enthusiasts to address common failure points and provide a robust, performance-oriented upgrade for your vehicle. By replacing aging factory parts with premium, high-performance alternatives, you’ll optimize cooling efficiency and safeguard your engine from the stress of overheating.

    Our all-inclusive "Level 3" High-Performance Cooling System Service Kit includes:

    CSFxTurner Performance Triple-Pass Aluminum Radiator Turner Motorsport Heavy Duty Aluminum Expansion Tank ECS Silicone Radiator Hoses ECS Aluminum Water Pump Pulley Wahler Thermostat (80°C) Bremmen Aluminum Water Pump Bremmen Parts Auxiliary Fan Switch Continental Accessory Belt ECS Kevlar-Reinforced A/C Compressor Drive Belt Genuine BMW Water Pump O-Ring Genuine BMW Water Pump Bolts Genuine BMW G48 Antifreeze (1 Gallon) Redline Water Wetter Performance Coolant Additive (12 oz.)

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    Turner Comprehensive Fan Delete Kit - E36 (up to 09/1995)
    affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
    Packaged by Turner - Corporate Logo
    T#:554691
    Part#: FD2PRE95KT
    In Stock
    $ 119.71 USD
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    $ 119.71 USD
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    The fan that attaches to the water pump carries so much rotational mass that it can actually hinder the performance of your engine. To address this, we now offer out line of fan delete kits that replace everything needed to get rid of your fan and fan clutch, without causing cooling issues as a result. This Comprehensive kit is the mid-priced option, including the essentials and an upgraded aluminum thermostat housing that won't crack or break like the brittle plastic housing. 

    This kit is best for someone who wants to upgrade their thermostat housing to aluminum, has already upgraded their water pump pulley, and has performed regular maintenance on their engine drive belts.

    Included in this kit:

    • 80* thermostat
    • 1 liter of coolant
    • Water Wetter coolant additive
    • Low-temperature coolant temperature sensor/switch
    • Aluminum thermostat housing with gaskets
    • Fan delete nut

    Fits the following BMWs:
    1992-09/1995 E36 BMW 325i/is/ic 328i/is/ic M3

    **This kit is intended to be used with cars that have a functional auxiliary fan (64508364093) or an upgraded electrical fan installed.**

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    Turner Comprehensive Fan Delete Kit - E36 (09/1995+)
    affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
    Packaged by Turner - Corporate Logo
    T#:554694
    Part#: FD2AFT95KT
    In Stock
    $ 140.08 USD
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    $ 140.08 USD
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    The fan that attaches to the water pump carries so much rotational mass that it can actually hinder the performance of your engine. To address this, we now offer out line of fan delete kits that replace everything needed to get rid of your fan and fan clutch, without causing cooling issues as a result. This Comprehensive kit is the mid-priced option, including the essentials and an upgraded aluminum thermostat housing that won't crack or break like the brittle plastic housing. 

    This kit is best for someone who wants to upgrade their thermostat housing to aluminum, has already upgraded their water pump pulley, and has performed regular maintenance on their engine drive belts.

    Included in this kit:

    • 80* thermostat
    • 1 liter of coolant
    • Water Wetter coolant additive
    • Low-temperature coolant temperature sensor/switch
    • Aluminum thermostat housing with gaskets
    • Fan delete nut

    Fits the following BMWs:
    09/1995-1999 E36 BMW 323is/ic 328i/is/ic M3

    **This kit is intended to be used with cars that have a functional auxiliary fan (64508364093) or an upgraded electrical fan installed.**

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    Basic Cooling System Service Kit - E39 525i 528i 530i M52 2.8L M54 2....
    affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
    Packaged by Turner - Corporate Logo
    T#:557232
    Part#: E39M5XBCKT
    In Stock
    Sale - Save 9% $ 352.99

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

    $ 321.08 USD
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    Sale - Save 9%
    $ 352.99

    This product was last offered at the strikethrough price on
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    Just like the rest of your vehicle's major systems, the cooling system must also be addressed periodically to ensure proper cooling and component reliability. Plastic and rubber components become brittle and prone to splitting or cracking after long periods of heating and cooling cycles, especially in colder climates! The coolant itself can degrade or become contaminated, leading to potential corrosion or freezing issues. Finally, thermostats and sensors can fail completely, preventing proper cooling and/or coolant temperature readings to become inaccurate.

    To make sure you are not left stranded on the side of the road with an overheated engine, we have put together this Basic Cooling System Service kit. This kit contains all of the most-likely-to-fail components, giving you peace of mind knowing your engine will continue to run cool for another 60,000+ miles.

    See kit contents below for all included components.

    Show More Show Less

    Turner Basic Fan Delete Kit - E36 (up to 09/1995)
    affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
    Packaged by Turner - Corporate Logo
    T#:554690
    Part#: FD1PRE95KT
    In Stock
    $ 78.96 USD
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    $ 78.96 USD
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    The fan that attaches to the water pump carries so much rotational mass that it can actually hinder the performance of your engine. To address this, we now offer out line of fan delete kits that replace everything needed to get rid of your fan and fan clutch, without causing cooling issues as a result. This basic kit is the cheapest option, including just the bare essentials to get the job done and get your car running without a fan.

    This kit is best for someone who has already upgraded their thermostat housing and/or water pump pulley and has performed regular maintenance on their engine drive belts.

    Included in this kit:

    • 80* thermostat
    • 1 liter of coolant
    • Water Wetter coolant additive
    • Low-temperature coolant temperature sensor/switch

    Fits the following BMWs:
    1992-09/1995 E36 BMW 325i/is/ic 328i/is/ic M3

    **This kit is intended to be used with cars that have a functional auxiliary fan (64508364093) or an upgraded electrical fan installed.**

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    Basic Cooling System Service Kit - E36 S50/M50 (06/1995+), S52/M52 (0...
    affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
    Packaged by Turner - Corporate Logo
    T#:557244
    Part#: E36BCKT
    Ships on Aug 10, 2026
    Sale - Save 18% $ 277.99

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

    $ 228.44 USD
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    Sale - Save 18%
    $ 277.99

    This product was last offered at the strikethrough price on
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    $ 228.44 USD
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    Just like the rest of your vehicle's major systems, the cooling system must also be addressed periodically to ensure proper cooling and component reliability. Plastic and rubber components become brittle and prone to splitting or cracking after long periods of heating and cooling cycles, especially in colder climates! The coolant itself can degrade or become contaminated, leading to potential corrosion or freezing issues. Finally, thermostats and sensors can fail completely, preventing proper cooling and/or coolant temperature readings to become inaccurate.

    To make sure you are not left stranded on the side of the road with an overheated engine, we have put together this Basic Cooling System Service kit. This kit contains all of the most-likely-to-fail components, giving you peace of mind knowing your engine will continue to run cool for another 60,000+ miles.

    See kit contents below for all included components.

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    Thermostat Replacement Kit - E28, E30, E34 M20B25/27
    affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
    Packaged by Turner - Corporate Logo
    T#:41289770
    Part#: 11531730470TKT
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    $ 93.48 USD
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    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.
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    Basic Cooling System Service Kit - E9X 328i/xi w/ Manual Transmission...
    affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
    Packaged by Turner - Corporate Logo
    T#:557224
    Part#: E9X328MBCKT
    In Stock
    Sale - Save 5% $ 674.60

    This product was last offered at the strikethrough price on
    04-17-2026

    $ 638.79 USD
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    Just like the rest of your vehicle's major systems, the cooling system must also be addressed periodically to ensure proper cooling and component reliability. Plastic and rubber components become brittle and prone to splitting or cracking after long periods of heating and cooling cycles, especially in colder climates! The coolant itself can degrade or become contaminated, leading to potential corrosion or freezing issues. Finally, thermostats and sensors can fail completely, preventing proper cooling and/or coolant temperature readings to become inaccurate.

    To make sure you are not left stranded on the side of the road with an overheated engine, we have put together this Basic Cooling System Service kit. This kit contains all of the most-likely-to-fail components, giving you peace of mind knowing your engine will continue to run cool for another 60,000+ miles.

    See kit contents below for all included components.

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    Turner Ultimate Fan Delete Kit - E36 (up to 09/1995)
    affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
    Packaged by Turner - Corporate Logo
    T#:554692
    Part#: FD3PRE95KT
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    $ 245.47 USD
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    $ 245.47 USD
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    The fan that attaches to the water pump carries so much rotational mass that it can actually hinder the performance of your engine. To address this, we now offer out line of fan delete kits that replace everything needed to get rid of your fan and fan clutch, without causing cooling issues as a result. This Ultimate kit is the top tier option, including the essential conversion components, the upgraded aluminum thermostat housing, and a brand new accessory belt.

    This kit is best for someone who has not performed recent cooling system maintenance or who wants to replace everything at once for increased reliability and longevity.

    Included in this kit:

    • 80* thermostat
    • 1 liter of coolant
    • Water Wetter coolant additive
    • Low-temperature coolant temperature sensor/switch
    • Aluminum thermostat housing with gaskets
    • Fan delete nut
    • ECS  Aluminum Water Pump Pulley - Black
    • Accessory Belt

    Fits the following BMWs:
    1992-09/1995 E36 BMW 325i/is/ic 328i/is/ic M3

    **This kit is intended to be used with cars that have a functional auxiliary fan (64508364093) or an upgraded electrical fan installed.**

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    Basic Cooling System Service Kit - E36 S50/M50 (up to 06/1995), S52/M...
    affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
    Packaged by Turner - Corporate Logo
    T#:557247
    Part#: E36BCKT2
    Ships on Aug 10, 2026
    Sale - Save 18% $ 274.99

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

    $ 226.74 USD
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    Sale - Save 18%
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    This product was last offered at the strikethrough price on
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    $ 226.74 USD
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    Just like the rest of your vehicle's major systems, the cooling system must also be addressed periodically to ensure proper cooling and component reliability. Plastic and rubber components become brittle and prone to splitting or cracking after long periods of heating and cooling cycles, especially in colder climates! The coolant itself can degrade or become contaminated, leading to potential corrosion or freezing issues. Finally, thermostats and sensors can fail completely, preventing proper cooling and/or coolant temperature readings to become inaccurate.

    To make sure you are not left stranded on the side of the road with an overheated engine, we have put together this Basic Cooling System Service kit. This kit contains all of the most-likely-to-fail components, giving you peace of mind knowing your engine will continue to run cool for another 60,000+ miles.

    See kit contents below for all included components.

    Show More Show Less

    Turner Ultimate Fan Delete Kit - E36 (09/1995+)
    affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
    Packaged by Turner - Corporate Logo
    T#:554696
    Part#: FD3AFT95KT
    In Stock
    $ 265.84 USD
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    $ 265.84 USD
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    The fan that attaches to the water pump carries so much rotational mass that it can actually hinder the performance of your engine. To address this, we now offer out line of fan delete kits that replace everything needed to get rid of your fan and fan clutch, without causing cooling issues as a result. This Ultimate kit is the top tier option, including the essential conversion components, the upgraded aluminum thermostat housing, and a brand new accessory belt.

    This kit is best for someone who has not performed recent cooling system maintenance or who wants to replace everything at once for increased reliability and longevity.

    Included in this kit:

    • 80* thermostat
    • 1 liter of coolant
    • Water Wetter coolant additive
    • Low-temperature coolant temperature sensor/switch
    • Aluminum thermostat housing with gaskets
    • Fan delete nut
    • ECS  Aluminum Water Pump Pulley - Black
    • Accessory Belt

    Fits the following BMWs:
    09/1995-1999 E36 BMW 323is/ic 328i/is/ic M3

    **This kit is intended to be used with cars that have a functional auxiliary fan (64508364093) or an upgraded electrical fan installed.**

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    E9X 325i/330i 6MT Cooling Overhaul Package
    affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
    Packaged by Turner - Corporate Logo
    T#:340246
    Part#: TMS214376
    In Stock
    Sale - Save 25% $ 426.99

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

    Starting at $ 321.80 USD
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    This product was last offered at the strikethrough price on
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    This cooling overhaul will cover just about everything you could replace on the 325/330's cooling system. We start with the basic water pump and thermostat bundle. These are already vital to the health and durability of the N52 325/330. But to properly maintain these cars for the long term, the rest of the cooling system must be refreshed and preventatively replaced. Here you can add a radiator, expansion tank, cooling hoses, and the BMW antifreeze. This package fits 325/330 with N52 engine and manual transmission.

    The sophisticated electronics of the ECU and water pump means catastrophic overheating should be a thing of the past. But the downside is that the electronics can shut down without any warning or symptoms. And troubleshooting is equally frustrating since the water pump electronics are not readable or serviceable. There are several clues to a faulty thermostat or water pump - the fan runs at full speed all the time (even immediately on a cold start), pending (soft) fault code for low coolant flow, or the water pump can be heard running constantly. But when the pump fails it's an immediate shut down of the engine which can be a major inconvenience and lead to additional repairs that might have been avoided with preventative maintance. We recommend a full cooling system overhaul on the E90/E92 every 80-90,000 miles and to check for soft/pending codes at every 5,000 mile service .


    Base Cooling Overhaul Package - Water Pump and Thermostat
    (click to expand)
    Includes:
    + Genuine BMW electric water pump, p/n 11517586925
    + mounting screws for water pump (set of 3), p/n 11510392553
    + OEM Behr thermostat, p/n 11537549476
    + Original BMW connecting hose from thermostat to water pump, p/n 11537521049
    + OEM-style hose clamps for hose (x 2)

    The water pump on the N52 engine has more cooling responsibilities than ever before. The good news is that the pump only works when, and only as much, as it needs to. That means the system can actually stop the pump when it doesn't need to be running. The bad news is that it's now an electrical part, so a failure is usually immediate and with no warning. The preventative replacement is your only insurance from a very inconvenient and costly breakdown in the future. Plus you get the very latest BMW water pump design with any improvements they've made since your original pump was installed.
    Coolant Hoses
    (click to expand)
    With regular driving the hoses should last a very long time. Even the plastic connectors seem to be holding up well. But as a preventative measure new hoses are recommended. We have also seen issues with re-using hoses as the spring connectors get weak over time and may not have the strength to hold the hose in place. They seem to have a tough time holding tension especially when they have been removed and reinstalled. In the interests of a thorough overhaul we recommend replacing these 325/330 water hoses during this job (see diagram):
    • 17127531579, upper radiator hose (A)
    • 17127531581, lower radiator hose (B)
    • 11537552396, water pump to engine �
    • 11537545890, thermostat to cylinder head (includes new o-ring) (D)
      There are other hoses too but they are not often replaced during a radiator swap (radiator vent hose and heater core hose) and they don't see much wear. We offer these as well if you want a complete set (see Additional Items at the bottom of the page).
    Expansion Tank Options
    (click to expand)
    The expansion tank on the 325/330 is not prone to failures (unlike previous 3-series cars) so a new one is not strictly required. There aren't many seams or stress points for it to crack and we haven't heard of too many issues. But we wanted to offer it as part of a complete overhaul in case you want to cover everything. Simiarly, the level sensor is not required unless you're getting erroneous 'low coolant' warnings from the dash/iDrive. We do strongly recommend replacing the cap because that is designed to be the weak point in the system. The cap is what regulates the pressure inside the system and it should be replaced every few years anyway.
    Coolant Temp Sensors
    (click to expand)
    There are two coolant temp sensors on the E90 325/330 - in the lower radiator hose and in the cylinder head. Both feed coolant temps to the ECU to regulate the water pump and cooling fan. You should replace the one in the lower radiator hose because it's one of the main sources for coolant leaks, especially when the old sensor is re-used in a new hose. The sensor in the cylinder head is not as prone to leaks and it's easily accessible so you don't have to replace it right away. But we offer it with the package in case you want to have a complete cooling system overahul.
    13621433077, coolant temp sensor (in lower radiator hose)
    13621433076, coolant temp sensor (in cylinder head, next to oil filter housing)

    BUY AS A PACKAGE AND SAVE $$!

    This cooling package fits the following BMWs with the N52 engine and a manual transmission:
    2006-2006 E90 BMW 325i 325xi 330i 330xi - Sedan
    2006-2006 E91 BMW 325xi - Wagon


    Click on the options for your kit below and then click "update price" for your kit total.
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    E46 M5x M52 M54Cooling System Refresh Kit - Level 2
    affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
    Packaged by Turner - Corporate Logo
    T#:5498481
    Part#: E46M5X2KT
    Ships in 5 Business Days
    Sale - Save 5% $ 474.99

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

    $ 453.07 USD
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    This product was last offered at the strikethrough price on
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    $ 453.07 USD
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    Prevent cooling issues and take service of your cooling system one step further with a Turner Motorsport Level 2 Cooling System Maintenance Kit. The experts at Turner have identified all of the common parts that fail on a BMW and included them all in this convenient kit. BMW has been designing notoriously failure-prone cooling systems since the late 1980s. The coolant capacity in most BMW engines is not sufficient to accommodate any driving or overheating near red zone temperatures. If the coolant reaches this critical temperature, it is common for thousands of dollars in damage to occur. Stop the problems before they arise. If your BMW has 80,000 miles or more, replace all of these components to ensure that your vehicle stays healthy. Avoid water pump failure, cracked thermostat housings, and expansion tank leaks, which all lead to overheating and subsequent damage. This kit was put together by Turner for a complete cooling system service. GEBA water pump with metal impeller Ecs aluminum water pump pulley Fan switch Thermostat and thermostat housing Sealing gaskets Expansion tank with level sensor, clamp and cap 1 Gallon Coolant Upper & lower radiator hoses Accessory drive belts Radiator drain plug
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    Turner Basic Fan Delete Kit - E36 (09/1995+)
    affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
    Packaged by Turner - Corporate Logo
    T#:554693
    Part#: FD1AFT95KT
    In Stock
    $ 102.40 USD
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    $ 102.40 USD
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    The fan that attaches to the water pump carries so much rotational mass that it can actually hinder the performance of your engine. To address this, we now offer out line of fan delete kits that replace everything needed to get rid of your fan and fan clutch, without causing cooling issues as a result. This basic kit is the cheapest option, including just the bare essentials to get the job done and get your car running without a fan.

    This kit is best for someone who has already upgraded their thermostat housing and/or water pump pulley and has performed regular maintenance on their engine drive belts.

    Included in this kit:

    • 80* thermostat
    • 1 liter of coolant
    • Water Wetter coolant additive
    • Low-temperature coolant temperature sensor/switch

    Fits the following BMWs:
    09/1995-1999 E36 BMW 323is/ic 328i/is/ic M3

    **This kit is intended to be used with cars that have a functional auxiliary fan (64508364093) or an upgraded electrical fan installed.**

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    Complete Cooling System Overhaul Package - 2003-4/2004 Z4 2.5 3.0 ...
    affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
    Packaged by Turner - Corporate Logo
    T#:339100
    Part#: TMS224320
    In Stock
    Sale - Save 11% $ 508.99

    This product was last offered at the strikethrough price on
    12-23-2025

    Starting at $ 451.24 USD
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    Sale - Save 11%
    $ 508.99

    This product was last offered at the strikethrough price on
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    Starting at $ 451.24 USD
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    This is a customizable cooling system overhaul kit, which starts off with the basic radiator and water pump and can be configured to replace all the M54 common cooling system failure parts in one package. This cooling system package is for the 2003-2005 Z4 Roadster.

    The Z4 cooling system is much like that of the sister 3 series. Several of the primary cooling components are prone to failure within 60k miles (or less in many cases). A failure in the cooling system can lead to overheating and catastrophic engine failure. Don't gamble your engine! By replacing these core items preventatively, such as the radiator & waterpump, you are defusing what could be a ticking cooling system time bomb. And if you've had a failure of one of these parts, now is the time to refresh your cooling system. Available with our kit is an OEM Behr radiator, an Original BMW water pump (with updated composite impeller), thermostat (complete with housing), radiator cap, new hoses, and other essential cooling parts.

    Optional items (which can be added below):
  • Radiator cap
  • Major cooling hoses
  • Original BMW antifreeze
  • Upgrade the water pump to a Stewart EMP High Performance pump
  • Add a new coolant expansion tank (known for cracking)
  • Include a new coolant level sensor (known for failing / throwing "check coolant" messages)
  • Include a new coolant temp sensor (located in the lower radiator hose) (re-using the old sensor and seal may lead to a leak)
  • Add a new thermostat for an automatic transmission (located with the expansion tank).
    This cooling system overhaul kit fits the following BMWs:
    2003-2005 E85 BMW Z4 2.5i Z4 3.0i

    Please put a check in the boxes next to the items you wish to order.
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