BMW Cooling System Parts & Accessories for BMW 3 Series E93 (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
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Part#: 11537549476KT
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Includes everything you may need to replace your water pump and thermostat.
BMW N54 N55 S55 Mosselman Thermostat Installation Kit
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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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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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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

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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Thermostat Replacement Kit - E9X M3
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Part#: 11537836155KT2
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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.

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 - E82 E9X E84 E70 E71 With N55 Engines ...
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T#:554075
Part#: 11537601158KT2
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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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Performance Water Pump And Thermostat Kit
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T#:15710799
Part#: 11517632426-KT
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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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Pierburg Full Aluminum Water Pump With Hardware
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T#:6091465
Part#: 11515A05704APKT
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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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BMW Water Pump And Thermostat Kit - N54
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T#:378340
Part#: 11517632426KT3
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The water pumps in BMW N54 models are known for failure near 80,000 miles. This is a very common issue that often times leaves the owner stranded. This kit provides a single stop for the water pump and thermostat replacement to save the search and get you back on the road.

Included in this kit:

Thermostat
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 328i/xi w/ Manual Transmission...
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T#:557224
Part#: E9X328MBCKT
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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 - E82/88 E9X N54 3.0L w/ Auto or DCT...
For vehicles with automatic or DCT transmissions
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T#:557234
Part#: E8XE9XN54BCKT
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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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Cooling System overhaul Kit - E9X 328i/xi (W/ Automatic Trans) ...
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Part#: 17137607482KT8
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This is a compete cooling system overhaul kit, which includes all the common cooling system failure parts bundled into a complete package. This cooling system package is for the E90/92/93 328i/328xi with the N52 engine. 

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 thermostat housing, radiator, and 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 entire cooling system. Keep on top of the cooling needs of your engine for your own piece of mind. Potential buyers also see the upside of a properly maintained car with receipts. 

 

This kit fits the following BMWs:

2007-2012 E90/92/93 328i, 328xi with Automatic Transmission 

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Basic Cooling System Service Kit - E9X M3 S65
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T#:557214
Part#: E9XM3BCKT
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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.
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High Performance Cooling System Upgrade - E9X M3 (04/2008+)
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T#:557320
Part#: E9XM3PCKT
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To ensure your BMW keeps cool on the track, we have built out our new High Performance Cooling System Upgrade kits. Featured in this kit is everything you will need to redo your cooling system from top to bottom with OEM components, with select stock components swapped out for the high performance alternative!
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High Performance Cooling System Upgrade - E9X M3 (up to 04/2008) ...
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T#:557321
Part#: E9XM3PCKT2
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To ensure your BMW keeps cool on the track, we have built out our new High Performance Cooling System Upgrade kits. Featured in this kit is everything you will need to redo your cooling system from top to bottom with OEM components, with select stock components swapped out for the high performance alternative!
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Water Pump and Thermostat Package - N54 Engine - E82 135i, E9X 335i, ...
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T#:340365
Part#: TMS16432
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This packages covers the major components you would install along with a new water pump or thermostat. On the N54 cars (135i, 335i, 535i) the water pump and theremostat are mounted together. In fact, to get to the thermostat, BMW expects you to remove the water pump. This package covers the whole job. With the electric water pump now an integral part of the efficiency and performance of the engine, staying on top of its maintenance and replacement is the smart thing to do.

Our water pump/thermostat overhaul includes:

  • OEM VDO electric water pump, p/n 11517588885 or 11517632426
  • OEM mounting screws for water pump (set of 3), p/n 11517602123
  • OEM Behr thermostat, p/n 11537549476
  • Original BMW connecting hose from thermostat to water pump, p/n 11537545665
  • Original BMW hose clamps for hose (x 2)
  • BUY AS A PACKAGE AND SAVE $$!

    The water pump on the N54 engine has more cooling responsibilities than ever before. Not only must it provide cooling for the engine, but it's also pumping fluid used to cool the turbocharger oil and automatic transmission oil. The good news is that the pump only works when, and only as much, as it needs to. The engine computer dictates how much fluid needs to be pumped through the system depending on the load. That means the system can actually stop the pump when warmer temperatures are needed. No longer is the pump spinning all the time from an engine-driven belt. The bad news is that it's now an electrical part, so a failure is usually immediate and with no warning. And if the electronics are at fault, there is no way to rebuild or repair it. Fortunately, the engine computer will force a shut down or reduce power if a problem occurs, preventing catastrophic engine damage.

    How to avoid a water pump failure in the future? Replacing the water pump as part of a regular interval schedule will ensure you always have a functioning pump in place. Since this technology is relatively new for BMW, therefore the lifecycle of the pump isn't yet known, we have been recommending replacement every 80-100k miles. This package of OE/OEM parts covers everything with Original BMW coolant offered to finish off the job. A proper bleeding procedure must be followed with the new electric pump.

    This water pump package fits the following BMWs with the N54 engine:
    2007-2010 E60 BMW 535i 535xi 535i xDrive
    2008-2010 E82 BMW 135i
    2011-2012 E82 BMW 1M Coupe
    2006-2010 E90 BMW 335i 335xi 335i xDrive - Sedan
    2007-2010 E92 BMW 335i 335is 335xi 335i xDrive - Coupe
    2007-2010 E93 BMW 335i - Convertible
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OEM Water Pump And Thermostat Kit - N55 3.0L
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T#:557277
Part#: N55WTKT3
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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.

Kit includes:

  • OEM Wahler Thermostat
  • OEM VDO Electric Water Pump
  • Genuine BMW Antifreeze/Coolant
  • OEM VDO Mounting hardware required for both the thermostat and water pump
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E82 128i N51 SULEV, E9X 328i N51 SULEV Auto Cooling Overhaul Package ...
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T#:340253
Part#: TMS215325
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This cooling overhaul will cover just about everything you could replace on the 328 SULEV's cooling system. We start with the basic water pump and thermostat bundle. These are already vital to the health and durability of the N51 328i SULEV. 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, all of the 328 SULEV cooling hoses, and the BMW antifreeze. This package fits 128i/328i SULEV with N51 engine and automatic transmission. Some of the components are different for the automatic models because of the auto transmission oil cooler.

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 N51 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.
Cooling 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 328 SULEV water hoses during this job (see diagram):
  • 17127531579, upper radiator hose
  • 17127531581, lower radiator hose
  • 11537613176, water pump to engine
  • 11537534880, gasket for #176 hose
  • 11537545890, thermostat to cylinder head (includes new o-ring)
  • 17117524710, radiator to auto trans cooler
    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 328 SULEV 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 328 SULEV - 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)

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This cooling package fits the following BMWs with the N51 engine and an auto transmission:
2008-2012 E82 BMW 128i SULEV
2007-2011 E90 BMW 328i 328xi 328i xDrive SULEV - Sedan
2007-2012 E91 BMW 328i 328xi 328i xDrive SULEV - Wagon
2007-2013 E92 BMW 328i 328xi 328i xDrive SULEV - Coupe
2007-2013 E93 BMW 328i SULEV - Convertible
Note: not for cars that have the dealer-installed auxiliary heating option. Some of the hoses are different with that option. It's not a very common option in North America (except in parts of Canada) but there are hoses that are specific to that option.


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Water Pump and Thermostat Package - N51/N52 Engine - E82 128i, E9X 32...
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T#:42873693
Part#: TMS206099GKT
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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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E82 128i, E9X 328i 6MT Cooling Overhaul Package
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Packaged by Turner - Corporate Logo
T#:340252
Part#: TMS214377
In Stock
Sale - Save 14% $ 704.99

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

Starting at $ 606.54 USD
Sale - Save 14%
$ 704.99

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

Starting at $ 606.54 USD
This cooling overhaul will cover just about everything you could replace on the 328'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 328i. 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 328i/328xi 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.
Cooling 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 328 water hoses during this job (see diagram):
  • 17127531579, upper radiator hose (A)
  • 17127564478, 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 328 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.

BUY AS A PACKAGE AND SAVE $$!

This cooling package fits the following BMWs with the N52 engine and a manual transmission:
2008-2012 E82 BMW 128i
2007-2011 E90 BMW 328i 328xi 328i xDrive - Sedan
2007-2012 E91 BMW 328i 328xi 328i xDrive - Wagon
2007-2013 E92 BMW 328i 328xi 328i xDrive - Coupe
2007-2013 E93 BMW 328i - Convertible


Click on the options for your kit below and then click "update price" for your kit total.
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Basic Cooling System Service Kit - E9X 328i/xi N52 3.0L w/ Auto Trans...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Packaged by Turner - Corporate Logo
T#:557241
Part#: E9X328BCKT
Back Ordered
Sale - Save 5% $ 711.99

This product was last offered at the strikethrough price on
03-24-2026

$ 673.03 USD
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$ 711.99

This product was last offered at the strikethrough price on
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$ 673.03 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
E82 128i, E9X 328i Auto Cooling Overhaul Package
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Packaged by Turner - Corporate Logo
T#:340251
Part#: TMS214378
In Stock
Sale - Save 16% $ 621.99

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

Starting at $ 519.53 USD
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Sale - Save 16%
$ 621.99

This product was last offered at the strikethrough price on
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Starting at $ 519.53 USD
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This cooling overhaul will cover just about everything you could replace on the 328'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 328i. 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, all of the 328 cooling hoses, and the BMW antifreeze. This package fits 328i/328xi with N52 engine and automatic transmission. Some of the components are different for the automatic models because of the auto transmission oil cooler.

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.
Cooling 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 328 water hoses during this job (see diagram):
  • 17127531579, upper radiator hose
  • 17127564478, lower radiator hose
  • 11537613176, water pump to engine
  • 11537534880, gasket for #176 hose
  • 11537545890, thermostat to cylinder head (includes new o-ring)
  • 17117524710, radiator to auto trans cooler
    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 328 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.

BUY AS A PACKAGE AND SAVE $$!

This cooling package fits the following BMWs with the N52 engine and an auto transmission:
2008-2012 E82 BMW 128i
2007-2011 E90 BMW 328i 328xi 328i xDrive - Sedan
2007-2012 E91 BMW 328i 328xi 328i xDrive - Wagon
2007-2013 E92 BMW 328i 328xi 328i xDrive - Coupe
2007-2013 E93 BMW 328i - Convertible
Note: not for cars that have the dealer-installed auxiliary heating option. Some of the hoses are different with that option. It's not a very common option in North America (except in parts of Canada) but there are hoses that are specific to that option.


Click on the options for your kit below and then click "update price" for your kit total.
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Thermostat Installation Kit with Thermostat - N54, N55, S55
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Packaged by Turner - Corporate Logo
T#:55353595
Part#: OTN54.T85KT3
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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.
E82 128i N51 SULEV, E9X 328i N51 SULEV 6MT Cooling Overhaul Package ...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Packaged by Turner - Corporate Logo
T#:340254
Part#: TMS215326
Ships in 1 day
Starting at $ 1,233.54 USD
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This cooling overhaul will cover just about everything you could replace on the 328 SULEV's cooling system. We start with the basic water pump and thermostat bundle. These are already vital to the health and durability of the N51 328 SULEV. 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 128/328 SULEV with N51 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 N51 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 328 SULEV 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 328 SULEV 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 328 SULEV - 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 N51 engine and a manual transmission:
2008-2012 E82 BMW 128i SULEV
2007-2011 E90 BMW 328i 328xi 328i xDrive SULEV - Sedan
2007-2012 E91 BMW 328i 328xi 328i xDrive SULEV - Wagon
2007-2013 E92 BMW 328i 328xi 328i xDrive SULEV - Coupe
2007-2013 E93 BMW 328i SULEV - Convertible
Note: not for cars that have the dealer-installed auxiliary heating option. Some of the hoses are different with that option. It's not a very common option in North America (except in parts of Canada) but there are hoses that are specific to that option.


Click on the options for your kit below and then click "update price" for your kit total.
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Basic Cooling System Service Kit - E9X M3 S65 - Dry
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Packaged by Turner - Corporate Logo
T#:53891614
Part#: 17112283500KT
Ships in 3 Business Days
New Item
$ 540.99

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

$ 531.99 USD
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$ 531.99 USD
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Cooling System Overhaul Kit - E9X M3 (04/2008+)
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Packaged by Turner - Corporate Logo
T#:554725
Part#: E9XM3CSO2KT
Back Ordered
$ 1,785.99

This product was last offered at the strikethrough price on
04-07-2026

$ 1,732.99 USD
$ 1,732.99 USD
This is a compete cooling system overhaul kit, which includes all the common cooling system failure parts bundled into a complete package.

Cooling System overhaul Kit - E9X M3 (up to 04/2008)
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Packaged by Turner - Corporate Logo
T#:554104
Part#: 11517839062KT10
Back Ordered
$ 1,761.17

This product was last offered at the strikethrough price on
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$ 1,718.51 USD
$ 1,718.51 USD
This is a compete cooling system overhaul kit, which includes all the common cooling system failure parts bundled into a complete package.
Basic Cooling System Service Kit - E82/88 E9X N55 3.0L w/ Auto Transm...
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Packaged by Turner - Corporate Logo
T#:557227
Part#: E8XE9XN55ABCKT
Ships in 10 Business Days
Sale - Save 24% $ 745.99

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

$ 566.55 USD
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Sale - Save 24%
$ 745.99

This product was last offered at the strikethrough price on
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$ 566.55 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

High-Performance Cooling System Service Kit - Level 1
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Packaged by Turner - Corporate Logo
T#:38229085
Part#: 11517588885KT5
Ships on Sep 14, 2026
Sale - Save 8% $ 1,433.99

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

$ 1,314.11 USD
Sale - Save 8%
$ 1,433.99

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

$ 1,314.11 USD

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.

The Turner Motorsport Level 1 Performance Cooling System Refresh 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 comprehensive "Level 1" High-Performance Cooling System Service Kit includes:

Turner Motorsport Heavy Duty Aluminum Expansion Tank Pierburg Full Aluminum Water Pump ECS Aluminized Water Pump Hose V2.0 Bremmen Parts Thermostat ECS Performance Silicone Radiator Hose Kit Genuine BMW Blue G48 Antifreeze (2 Gallons) Redline Water Wetter (12 oz.)

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Basic Cooling System Service Kit - E9X 335i N55 w/ Manual Transmissio...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Packaged by Turner - Corporate Logo
T#:557210
Part#: E9XN55MBCKT
Ships on Nov 16, 2026
$ 1,129.99 USD
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$ 1,129.99 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

Cooling System Refresh Kit - Level 2 - E9x, E82, E88, Z4
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Packaged by Turner - Corporate Logo
T#:42099868
Part#: 11537558523TKT
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Sale - Save 19% $ 829.99

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

$ 671.07 USD
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Sale - Save 19%
$ 829.99

This product was last offered at the strikethrough price on
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$ 671.07 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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Cooling System overhaul Kit - E82/88 135i E9X 335i/xi/ix N54 manual t...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Packaged by Turner - Corporate Logo
T#:554121
Part#: 11537558522KT3
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Sale - Save 5% $ 1,573.99

This product was last offered at the strikethrough price on
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$ 1,500.75 USD
Sale - Save 5%
$ 1,573.99

This product was last offered at the strikethrough price on
04-10-2026

$ 1,500.75 USD

This is a compete cooling system overhaul kit, which includes all the common cooling system failure parts bundled into a complete package. This cooling system package is for the E82/88 135i or E90/92/93 335i/xi/is with the N54 engine. 

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 thermostat housing, radiator, and 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 entire cooling system. Keep on top of the cooling needs of your engine for your own piece of mind. Potential buyers also see the upside of a properly maintained car with receipts. 

For vehicles with manual transmission only

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High Performance Cooling System Upgrade - E9X 335i N54 w/ DCT/Auto Tr...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Packaged by Turner - Corporate Logo
T#:557324
Part#: E9XN54PCKT2
Back Ordered
$ 2,180.99

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

$ 2,177.34 USD
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$ 2,177.34 USD
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If you plan to drive your BMW aggressively on the track, it is important that you upgrade your cooling system to avoid overheating. To ensure your BMW keeps cool on the track, we have built out our new High Performance Cooling System Upgrade kits. Featured in this kit is everything you will need to redo your cooling system from top to bottom with OEM components, with select stock components swapped out for the high performance alternative! This kit includes a high performance CSF Aluminum Radiator for significantly better cooling than the stock radiator and full aluminum construction that won't crack from long term heat cycling, and a Mishimoto Performance 74*C thermostat for lower temperature operation and increased cooling of the engine. 

Additional items included in this kit:

  • OEM Replacement Coolant Hoses
  • ECS Tuning Silicone Coolant Outlet Hose with ECS Billet Thermostat Hose Adapter
  • ECS Tuning Aluminized Water Pump Hose
  • OEM Expansion Tank, Cap, and Level Sensor
  • OEM Belts, Tensioners, and Pulleys
  • OEM Auxiliary Fan Switch
  • OEM VDO Water Pump
  • Genuine BMW Hardware for Easy Installation
  • Genuine BMW Antifreeze/Coolant (Undiluted) - 2 Gallons
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Cooling System overhaul Kit - E82/88 135i E9X 335i/xi/ix N54 Automati...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Packaged by Turner - Corporate Logo
T#:554111
Part#: 11510392553RKT3
Back Ordered
Sale - Save 2% $ 1,660.99

This product was last offered at the strikethrough price on
04-10-2026

$ 1,632.67 USD
Sale - Save 2%
$ 1,660.99

This product was last offered at the strikethrough price on
04-10-2026

$ 1,632.67 USD

This is a compete cooling system overhaul kit, which includes all the common cooling system failure parts bundled into a complete package. This cooling system package is for the E82/88 135i or E90/92/93 335i/xi/is with the N54 engine. 

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 thermostat housing, radiator, and 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 entire cooling system. Keep on top of the cooling needs of your engine for your own piece of mind. Potential buyers also see the upside of a properly maintained car with receipts. 

For vehicles with automatic or DCT transmission only

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High Performance Cooling System Upgrade - E9X 335i N54 w/ Manual Tran...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Packaged by Turner - Corporate Logo
T#:557323
Part#: E9XN54PCKT
Back Ordered
$ 2,160.99

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

$ 2,154.64 USD
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$ 2,154.64 USD
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If you plan to drive your BMW aggressively on the track, it is important that you upgrade your cooling system to avoid overheating. To ensure your BMW keeps cool on the track, we have built out our new High Performance Cooling System Upgrade kits. Featured in this kit is everything you will need to redo your cooling system from top to bottom with OEM components, with select stock components swapped out for the high performance alternative! This kit includes a high performance CSF Aluminum Radiator for significantly better cooling than the stock radiator and full aluminum construction that won't crack from long term heat cycling, and a Mishimoto Performance 74*C thermostat for lower temperature operation and increased cooling of the engine. 

Additional items included in this kit:

  • OEM Replacement Coolant Hoses
  • ECS Tuning Silicone Coolant Outlet Hose with ECS Billet Thermostat Hose Adapter
  • ECS Tuning Aluminized Water Pump Hose
  • OEM Expansion Tank, Cap, and Level Sensor
  • OEM Belts, Tensioners, and Pulleys
  • OEM Auxiliary Fan Switch
  • OEM VDO Water Pump
  • Genuine BMW Hardware for Easy Installation
  • Genuine BMW Antifreeze/Coolant (Undiluted) - 2 Gallons
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Cooling System Refresh Kit - Level 3
For vehicles with automatic or DCT transmissions
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Packaged by Turner - Corporate Logo
T#:41188189
Part#: 11510392553TKT
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This all-in-one kit provides every essential component to overhaul your vehicle’s cooling system and complete a full radiator and drive belt service.
Basic Cooling System Service Kit - E82/88 E9X N54 3.0L w/ Manual Tran...
For vehicles with manual transmission
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Packaged by Turner - Corporate Logo
T#:557240
Part#: E8XE9XN54BCKT2
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04-06-2026

$ 995.99 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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ECS Tuning Aluminum Coolant Bleeder Screw
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ECS - Corporate Logo
T#:363070
Part#: 003530ECS01A
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Replace the flimsy plastic bleeder screw used in the coolant expansion tank or in one of the cooling system hoses with this high quality, durable, aluminum bleeder screw. The stock plastic screw can deform over time due to heat or even regular use. We have even seen the head of the screw snap off, leaving the threaded body stuck in the expansion tank. This aluminum screw will help to prevent sudden failure of the bleeder screw, which can result in immediate overheating of the car.

ECS Tuning's Aluminum Coolant Bleeder Screw replaces Genuine BMW Part Number 17111712788

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ECS Billet Cylinder Head Outlet Hose Adapter - BMW N52 N54 N55 3.0L N...
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ECS - Corporate Logo
T#:556105
Part#: 024797ECS01
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06-14-2026

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Some of the biggest issues when owning a BMW can come from cooling system components. Even through years of improvement, the same failure is seen with the plastic fittings and adapters from years of hot to cold temperature fluctuation. The N52/N54/N55/N20 engine sees failure at the plastic cylinder head outlet adapter connecting the cylinder head to the thermostat hose. The stock plastic adapter simply shears off at the end of the barbed fitting, creating a massive coolant leak. The engineering team at ECS Tuning decided a billet aluminum piece was a much better option to contend with the temperature fluctuation. Since other offerings on the market want you to modify your OE hose to be reused, they even developed a silicone replacement hose. These 2 pieces can be purchased separately if you decide to reuse your existing OE hose or in a package kit together for a single click upgrade. Features: Manufactured from billet 6061-T6 with type III anodized for exceptional durability and corrosion resistance. Much stronger part than OEM plastic ​​Will not become brittle and fatigued over time due to thermal cycling. This will prevent the part from breaking during removal and re-installation. Follows OEM form for perfect fitment. Utilizes (and includes) OEM O-ring 11537545278 to ensure a proper seal. Recommended clamp size is 25-40mm
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ECS Aluminized Silicone Water Pump Hose V2.0 - - E9x E8x E6x N52 N54...
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ECS - Corporate Logo
T#:640062
Part#: 008286LA01
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$ 80.24 USD
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When it comes to cooling system hose replacement, the "U" shaped hose connecting the water pump to the thermostat is usually the first to fail. A lot of this comes from its close proximity to the hot downpipes, while some of this failure comes from the sharp bends in the hose. 

Why not upgrade when you're due for a replacement? The ECS Tuning silicone hose replacement fixes these issue with two key features in their design. Offering this hose in a much more heat resistant silicone instead of OE rubber and having the hose wrapped in aluminum. The aluminum coating acts as a heat shield to further protect the silicone as well as reducing the temperatures forced on the coolant running through the hose. 

Replaces OE hose #11537545665

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N54 3.0L ECS Silicone Coolant Outlet Hose
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ECS - Corporate Logo
T#:555020
Part#: 025216ECS01
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06-14-2026

$ 60.74 USD
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Upgrade your cooling system with durable silicone hoses that offer extended life and enhanced heat tolerance. Say goodbye to stock limitations and opt for silicone hoses that retain OEM fitment while overcoming typical OEM hose flaws. These hoses are designed to resist deterioration and softening due to coolant heat cycles, ensuring prolonged longevity compared to traditional rubber hoses.

Specifically, this hose connects from the thermostat housing outlet to the front of the cylinder head. Its features include:

  • Inclusive of both upper and lower clamps for easy installation.
  • Crafted from 4-Ply reinforced silicone, ensuring superior durability compared to OE rubber hoses that are prone to failure.
  • Internal layer lined with Flourosilicone for exceptional chemical resistance.
  • Silicone construction provides reduced thermal conductivity, enhanced resistance to ozone, and UV degradation, thereby boosting overall performance and longevity.
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ECS Silicone Radiator Hoses - N52
For Vehicles With Engine Code N52B30 (Non-SULEV w/o Auxiliary Heating)
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ECS - Corporate Logo
T#:37723492
Part#: 008641LA03
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This product was last offered at the strikethrough price on
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Tired of dealing with brittle, dry-rotted rubber hoses? Whether you're refreshing your cooling system or replacing aging components, this ECS Silicone Radiator Coolant Hose Set is the ultimate upgrade. Designed for durability, performance, and a factory-perfect fit, these premium silicone hoses outperform standard rubber in every way.

Why Choose Silicone Over Rubber?

Made from heavy-duty, reinforced 4-ply fluorosilicone, ECS hoses withstand extreme temperatures and pressures far beyond OEM rubber hoses. Engineered to resist oil, fuel, and electrochemical degradation, these hoses are tested for continuous operation at 250°F and over 45 psi, delivering superior reliability, reduced turbulence, and improved coolant flow.

Key Benefits:

Direct OE Fitment – Perfectly molded to factory specifications for seamless installation. Enhanced Durability – Heat-resistant silicone prevents cracking, swelling, and deterioration over time. Superior Cooling Performance – Smoother internal passageways improve coolant flow and system efficiency. Pre-Installed Quick-Connect Fittings – Hassle-free installation with OEM-style connectors. Premium Hardware Included – Comes with German-style stainless steel worm-drive hose clamps for a secure fit. Kit Includes:

Upper Radiator Hose Lower Radiator Hose Pre-Installed Factory "Quick-Connect" Flanges (4) Stainless Steel Worm-Drive Hose Clamps (4) Replaces OEM Part Numbers: 17127531579 & 17127564478

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BMW E8X E9X Billet Aluminum Radiator Drain Plug
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ECS - Corporate Logo
T#:367075
Part#: 013197ECS01A
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Ensure your BMW's cooling system stays in top shape with ECS Tuning's Billet Aluminum Radiator Drain Plug. Designed specifically for late-model 1-Series and 3-Series BMWs, this replacement plug addresses the common issue of weak plastic drain plugs. Constant exposure to engine heat and road debris makes the plastic plugs brittle, leading to frustration with broken plugs. ECS Tuning's billet aluminum alternative puts an end to these problems.

  • Durable Replacement: Say goodbye to weak plastic drain plugs.
  • Enhanced Material: Billet aluminum provides superior strength and longevity.
  • Deeper Screw Head: Accommodates Phillips head or flat head screwdrivers for better engagement.
  • Reduced Stripping Risk: Minimize the chance of stripping out the screw head.

Don't let cooling system maintenance be a hassle. Order ECS Tuning's Billet Aluminum Radiator Drain Plug now and experience worry-free service.

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Aluminized Silicone Water Pump Hose - with clamps
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ECS - Corporate Logo
T#:568837
Part#: 020414ECS01KT
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$ 85.49 USD
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Performance N54 Silicone Radiator Hose Kit - With OE Connectors - E82...
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ECS - Corporate Logo
T#:19825274
Part#: 008640LA02
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06-14-2026

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Upper and lower radiator silicone coolant hose kit to upgrade from your stock rubber hoses. Includes stainless steel hose clamps.

Upgrade all of those common, aging, dry-rotted rubber hoses under the hood of your vehicle with ECS durable, Silicone Radiator Coolant Hose Set. These perform and look great within any engine bay, they are made to last longer than standard rubber hoses and are perfectly molded to the OE hose specifications for a simple installation on most vehicles.

Made from heavy duty, reinforced silicone, this silicone coolant hose set can handle higher temperatures and greater pressure than the stock, squishy rubber hoses. Designed to resist oil, fuel and electrochemical degradation and tested up to continuous 250° Fahrenheit operating temperature and over 45psi, you can expect to achieve greater reliability, less turbulence and improved flow with our smooth silicone hoses.

Kit contents:

Upper Radiator hose
Lower Radiator hose
4 factory flange connections
German-style stainless steel hose clamps
With the smoother internal passageways, consistent hose internal diameters, and smoother bends will result in improved flow for greater cooling system performance with added durability.

The perfect way to take the worry out of your coolant hoses and keep your engine from potentially overheating.

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ECS Performance Coolant Outlet Hose Kit - E82/88 E9X Z4 N52
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ECS - Corporate Logo
T#:599848
Part#: 004481LA01
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The perfect upgrade for your connection between your thermostat and cylinder head. Designed using durable silicone and billet aluminum to greatly outlast the OE rubber and plastic combination. Some of the weakest points of the cooling systems in BMW's can come down to the OE plastic fittings breaking down from the constant changes in temperature, softening these plastic components. When this happens, even simply moving the hose slightly could cause the fitting to crack, causing the coolant to leak all over. The ECS design silicone hose with billet aluminum adapter retains OE fitment with superior strength to not only handle the performance, but also stand up to the wear and tear of a daily driver. Features: Manufactured from billet 6061-T6 and type III anodized for exceptional durability and corrosion resistance. Much stronger part than OEM plastic Will not become brittle and fatigue over time due to thermal cycling. This will prevent the part from breaking during removal and re-installation. Constructed of 4-Ply reinforced silicone for improved durability over the failure-prone OE rubber hose. Flourosilicone lined internal layer for exceptional chemical resistance. Silicone offers reduced thermal conductivity as well as improved resistance to ozone and UV degradation for improved performance and durability. Follows OEM form for perfect fitment. Utilizes OEM O-ring 11537545278 to ensure a proper seal. Replaces Genuine BMW Part Number: 11537545890
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ECS Silicone Radiator Hoses - S65
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ECS - Corporate Logo
T#:39531770
Part#: 008645LA01
In Stock
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This product was last offered at the strikethrough price on
05-03-2026

$ 83.09 USD
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Sale - Save 15%
$ 97.99

This product was last offered at the strikethrough price on
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$ 83.09 USD
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Tired of dealing with brittle, dry-rotted rubber hoses? Whether you're refreshing your cooling system or replacing aging components, this ECS Silicone Radiator Coolant Hose Set is the ultimate upgrade. Designed for durability, performance, and a factory-perfect fit, these premium silicone hoses outperform standard rubber in every way.

Why Choose Silicone Over Rubber?

Made from heavy-duty, reinforced 4-ply fluorosilicone, ECS hoses withstand extreme temperatures and pressures far beyond OEM rubber hoses. Engineered to resist oil, fuel, and electrochemical degradation, these hoses are tested for continuous operation at 250°F and over 45 psi, delivering superior reliability, reduced turbulence, and improved coolant flow.

Key Benefits:

Direct OE Fitment – Perfectly molded to factory specifications for seamless installation on your S65-equipped E9X M3. Enhanced Durability – Heat-resistant silicone prevents cracking, swelling, and deterioration over time. Superior Cooling Performance – Smoother internal passageways improve coolant flow and system efficiency. Kit Includes:

Upper Radiator Hose Lower Radiator Hose Replaces OEM Part Numbers: 11537838214 & 11537840661.

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70-78mm - T-Bolt Hose Clamp - Priced each
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ECS - Corporate Logo
T#:380416
Part#: 003402ECS07A-03
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$ 23.99 USD
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Ensure a tight and leak-free seal in your BMW's cooling, vacuum, or intake systems by installing a new adjustable hose clamp. Over time, clamps can deform or lose their tightness due to aging or frequent removal, potentially causing leaks in your coolant or vacuum hoses. Avoid the risk of leaks by replacing old clamps with new hardware, offering peace of mind against coolant and vacuum system issues.

Key benefits of the adjustable hose clamp include:

  • Maintaining a secure and leak-free seal in your BMW's systems.
  • Preventing coolant or vacuum leaks that can affect performance.
  • Adjustable size from 70mm to 78mm for versatile applications.

Upgrade your hose clamps to ensure optimal performance and reliability in your BMW's systems.

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