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BMW Cooling System Parts & Accessories for BMW 6 Series F12 (2012+)

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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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BMW N54 N55 S55 Mosselman Thermostat Installation Kit

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T#:4799665

Part#: THERMINSTALLKT

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$ 21.64 USD

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

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

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

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Thermostat Replacement kit - 90C

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T#:15744051

Part#: 82142209769KT

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$ 142.74 USD

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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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$ 81.42 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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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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$ 232.61 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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Pierburg Full Aluminum Water Pump With Hardware

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T#:6091465

Part#: 11515A05704APKT

Back Ordered

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05-30-2026

$ 526.79 USD

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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 Installation Kit with Thermostat - N54, N55, S55

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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.

Performance Thermostat - 90C - N62, N63, S63, N73, S55

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T#:637061

Part#: 11537586885

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$ 75.06 USD

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Includes housing and sealing o-ring A thermostat that opens sooner promotes better cooling in your vehicle. Running a lower temperature thermostat will keep everything much cooler. Keeping the engine cooler will help reduce and improve the life of the seals in your engine, saving you time and money, while also helping to increase engine performance. A tune might be required to gain the most from this modification, as well as to get your car's ECU accustomed to seeing lower temperatures.

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Coolant Vacuum Purge & Refill Tool Set

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T#:402498

Part#: 024948SCH01A

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$ 89.99 USD

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The Schwaben Coolant Vacuum Fill Tool ensures no air pockets get into your cooling system while you're replacing your coolant - intended for use to refill your cooling system, not for removal. Can be used with Schwaben fluid extractors or with shop air - standard air compressor with a minimum rating of 90 PSI (6.2 bar). Includes all fittings and adapters necessary for use, with a molded storage case to keep your Schwaben Vacuum Fill Tool pristine for future use.

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Schwaben Coolant Refill/Air Purge Tool

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T#:362940

Part#: 003466SCH01

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This product was last offered at the strikethrough price on
09-29-2026

$ 90.39 USD

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When it comes to BMW's we all know the weak point is commonly in the cooling system, many models proving hard to bleed the air pockets out after the refresh. The coolant refill tool solves this problem, ensuring that you get an air pocket free fill. The entire task is as simple as draining the system like normal, reinstalling the drain plugs and hooking the tool up to your refill location. The reason this tool works so well is due to the venturi valve, it converts air pressure from the compressor to vacuum inside the cooling system, then with a twist of a valve sucks coolant right into the system using the vacuum pressure.

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CSF High Performance Engine Oil Cooler - BMW F1X M5 M6, F9X M5 M8 ...

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T#:38195402

Part#: 8317

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10-04-2026

$ 647.10 USD

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CSF has been at the forefront of pushing the performance limits of the S63 engine with its Twin Charge Air Coolers. Today, many M5, M6, and M8 models are exceeding 1000HP, but with greater power comes increased heat. As power levels rise, so do oil temperatures, with some owners experiencing temperatures surpassing 240°F (115°C) during intense track sessions. As these M cars continue to age and power thresholds are pushed further, factory cooling systems are struggling to keep up. To address this challenge, CSF partnered with Carbahn to develop a direct-fit solution for both platforms. Engineered to manage the extreme heat generated by Carbahn’s new S63 Stroker Kit, this oil cooler is designed for peak performance and reliability. But enhanced performance isn’t the only reason to upgrade. Many F1X and F9X owners have had to replace their oil coolers due to leaks and damage, primarily caused by their exposed mounting position—a problem worsened by lowered suspension setups. A stronger, more durable design was needed to resolve these issues. Whether your M5, M6, or M8 is a daily driver, weekend cruiser, or dedicated track machine, upgrading the oil cooler is a smart investment. Tuned S63s, especially those with upgraded turbos, produce significantly more heat, making efficient cooling even more critical. Excessive oil temperatures can quickly trigger limp mode and, in extreme cases, cause catastrophic engine failure. CSF’s new High-Performance Engine Oil Cooler isn’t just about optimizing performance—it’s a preventative upgrade that helps avoid costly repairs and extends your engine’s lifespan.

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Radiator Pressure Tester Kit

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T#:391482

Part#: 014710SCH01A

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MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 154.49 USD

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Are you refreshing your coolant system or having issues with coolant loss? An easy way to test your system for leaks and ensure you're able to maintain pressure without coolant loss is the Schwaben Cooling System Pressure Tester Kit.

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Schwaben Locking Hose Pinch-Off Pliers

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T#:379950

Part#: 009787SCH01A

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$ 33.99 USD

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Schwaben Locking Hose Pinch-Off Pliers have adequate clamping force to effectively seal large or pressurized cooling system hoses. These pliers are ideal for clamping shut most hoses, ensuring reliability in your automotive tasks. With swivel jaws, they provide even clamping force, making them a versatile tool for various applications.

Adequate clamping force for large or pressurized hoses
Ideal for clamping shut most hoses
Swivel jaws ensure even clamping force
Versatile tool for automotive maintenance

WARNING: This product contains chemicals known to the state of California to cause cancer, birth defects, and/or reproductive harm. For more information, visit http://www.p65warnings.ca.gov.

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Bremmen Parts Upper radiator hose - F06, F07, F10, F12, F13

For vehicles with High speed synchronization

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T#:1195936

Part#: 17127580957

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$ 51.40 USD

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From radiator to filter housing

Low Temperature Thermostat - 97C

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T#:33612900

Part#: 11537601159-97C

Ships on Feb 1, 2027

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$ 85.67 USD

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Schwaben Radiator/ Intercooler Fin Comb

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T#:384260

Part#: 015326SCH01A

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$ 14.99 USD

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Straighten bent fins in heat exchangers like radiators, condensers, and intercoolers obstruct air flow and reduce heat transfer. Paper-thin fins are easily bent, even by slight pressure.

Coolant Expansion Tank Cap

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T#:36032339

Part#: 17117639020

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$ 11.99 USD

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Bremmen Parts O-Ring

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T#:399143

Part#: 11537545278

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$ 4.07 USD

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Seals your cooling system

Meyle Expansion Tank Cap

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We Price Match - Give Us A Call or Chat!

T#:579357

Part#: 3148009004

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$ 8.99 USD

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Replace worn or missing pieces.

Bracket Additional Water Pump - F01, F02, F06, F07, F10, F12, F13 ...

T#:46043

Part#: 17117603070

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Sale - Save 49% $ 59.99

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$ 30.34 USD

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Genuine BMW Bracket Additional Water Pump -
This item fits the following BMW Chassis:
F01,F02,F06,F10,F12,F13

Fits BMW Engines including:
N63,N63N,S63N

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CSF Universal Large Single-Pass Oil Cooler - Universal Application ...

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Universal fitment design - modifications may be necessary to run this cooler

T#:53608839

Part#: 8371

Ships in 3 Business Days

$ 499.00 USD

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CSF redesigned this cooler and went with a more traditional inlet/outlet orientation. The new single pass design features high efficiency and high durability, but with vertically oriented inlet and outlet connections.

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Engine Coolant Expansion Tank Cap

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T#:59038367

Part#: 17135A1BD89

Ships in 4 Business Days

$ 9.99 USD

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$ 9.99 USD

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Rein Additional Water Pump - N63 F Chassis

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T#:58782367

Part#: 64119230237

Ships in 4 Business Days

$ 92.99 USD

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Engineered as a direct replacement for failure prone original equipment secondary pumps, this electric water pump ensures steady hot fluid delivery to the heater core regardless of engine RPM. Built with high quality internal bearings, durable motor windings, and high grade composite housings, it withstands continuous thermal cycling and prevents internal electrical failures.

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Auxillary Water Pump - BMW N63 S63

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T#:58818960

Part#: 11515A36581

Ships in 4 Business Days

$ 93.99 USD

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Pumps coolant to the turbo

O-Ring And Gasket Kit

T#:55245812

Part#: 17227800XKT

Ships in 4 Business Days

$ 24.21 USD

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$ 24.21 USD

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This Maintenance Seal Kit bundles two high-failure items that should always be replaced anytime the engine oil cooler lines or oil level sensor are disturbed.

Coolant Expansion Tank

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T#:53044121

Part#: 17137601948

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$ 67.49 USD

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Coolant Expansion Tank Cap

T#:56001934

Part#: 46221

Special Order: No Guaranteed ETA

$ 19.99 USD

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$ 19.99 USD

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This Febi Bilstein coolant expansion tank cap is designed to maintain the exact 1.4 bar pressure required to maximize your coolant's boiling point.

Thermostat With Housing & Gasket

T#:56544033

Part#: 11537586885

Special Order: No Guaranteed ETA

$ 68.99 USD

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$ 68.99 USD

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This Febi Bilstein electronic coolant thermostat assembly delivers factory-level thermal control to keep coolant temperatures stable across varying engine loads.

Electromagnetic Water Pump With Bolts

T#:56291026

Part#: 178011

Special Order: No Guaranteed ETA

$ 879.99 USD

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$ 879.99 USD

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Restore the cooling precision of your BMW with this OEM-spec Febi Bilstein replacement electric water pump.

Bolt For Water Pump

T#:56724732

Part#: 11517602123

Special Order: No Guaranteed ETA

$ 2.99 USD

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$ 2.99 USD

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This Febi Bilstein water pump screw offers superior durability designed to maintain consistent clamping pressure under high thermal loads.

Meyle Engine Coolant Thermostat - BMW FXX, GXX

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T#:52797701

Part#: 3282280016

Ships on Oct 30, 2026

$ 47.99 USD

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This MEYLE thermostat ensures your engine stays at the perfect temperature for efficiency and power.

Vent Hose

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T#:39295552

Part#: 17127576363

Special Order: No Guaranteed ETA

Sale - Save 21% $ 27.99

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$ 22.02 USD

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$ 22.02 USD

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