BMW Cooling System Parts & Accessories for BMW 3 Series G20 (2019+)

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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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OEM Style Hose Clamps
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Turner Motorsport - Corporate Logo
T#:338927
Part#: HOSE-CLAMPS
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Hose clamps for radiator hoses, coolant hoses, vacuum hoses, or intake hoses. These hose clamps are the same style as your OEM hoses with a smooth inside band to prevent cutting into the hose material.
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Genuine BMW - Corporate Logo
T#:600648
Part#: 83192468442
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$ 34.12 USD
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Ensure optimal cooling for your BMW with Genuine BMW Coolant, providing the quality and performance your vehicle deserves. When it comes to maintaining your BMW, replacing old or worn-out parts with factory replacements is essential, and fluids are no exception. Experience the benefits of Genuine BMW Coolant: Specially designed for BMW vehicles. Factory replacement for optimal performance. Addresses flaws in the factory cooling system. Prevents antifreeze loss in both cold and hot weather. Recognizable green color for easy identification. BMW HT-12 can be used in any vehicle that currently contains G48 coolant (blue), but G48 should not continue to be used in vehicles that were originally filled with HT-12. (see compatibility image) This HT-12 Antifreeze/Coolant is exclusively formulated and produced for BMW to protect your engine year-round when used as directed. It fulfills the very high standards and requirements set by BMW to help protect the engine against freezing, boil over, corrosion, and excessive silicate gel precipitation. This ethylene glycol-based antifreeze contains no nitrites or phosphate, greatly reducing the possibility of harmful deposit formation. BMW antifreeze provides protection for metals such as cast iron, steel, and aluminum.
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ECS Tuning Aluminum Coolant Bleeder Screw
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ECS - Corporate Logo
T#:363070
Part#: 003530ECS01A
Ships on Aug 8, 2025
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$ 20.39 USD
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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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Schwaben - Corporate Logo
T#:362940
Part#: 003466SCH01
Ships on Aug 1, 2025
Sale - Save 15% $ 106.99
$ 90.94 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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Schwaben - Corporate Logo
T#:402498
Part#: 024948SCH01A
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$ 96.04 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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Genuine BMW - Corporate Logo
T#:29699315
Part#: 17135A1BD89
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$ 27.41 USD
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Genuine BMW Cover Lid
This item fits the following BMW Chassis:
E70 X5M,E71 X6M,E70 X5,E71 X6,F01,F02,F06,F10,F12,F13,F15,F16,F30,F80 M3,F82 M4,F83,i3i12


Bav Auto Tools - Corporate Logo
T#:580395
Part#: B8800082
Ships on Nov 13, 2025
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$ 28.79 USD
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Multiple adapters include to fit a variety of vehicles.
Bav Auto Tools - Corporate Logo
T#:580379
Part#: B8800058
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$ 27.19 USD
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Angled jaws close, creating a complete seal every time you use them - the jaws are offset, making it possible to use in hard-to-reach locations. Made of glass-filled nylon for extra strength. These are perfect for use with brake lines, etc.
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Genuine BMW - Corporate Logo
T#:625185
Part#: 17118666740
In Stock
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$ 434.23 USD
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To prevent overheating problems, replace a leaking radiator promptly.

Genuine MINI - Corporate Logo
T#:28337931
Part#: 17135A1BD89
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$ 24.20 USD
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Genuine BMW - Corporate Logo
T#:528940
Part#: 11518632587
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$ 30.06 USD
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This gasket needs to be replaced when splitting apart your pulley housing from the water pump. Gasket that goes between the coolant pump and the coolant pump front pulley assembly.
Bremmen Parts - Corporate Logo
T#:36913362
Part#: 11538606278
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$ 38.24 USD
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This junction heat hose, made from rubber, is prone to cracking, dry rot, and brittleness over time, often leading to coolant leaks at the front of the engine. Such leaks pose a significant risk to your engine’s health, as rapid coolant loss can cause overheating and severe damage.

Replace your worn or leaking heat hose with this high-quality OE replacement from Bremmen Parts. Engineered for a precise fit and long-lasting performance, this hose ensures a reliable repair and helps protect your engine from potential overheating.

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Genuine BMW - Corporate Logo
T#:546143
Part#: 11538606278
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$ 70.01 USD
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Hose coming off the small fitting on the thermostat. Replacement coolant hose for damaged or worn items. Dont forget to change all associated parts when doing a cooling service, or to fix a leak.
Genuine BMW - Corporate Logo
T#:528939
Part#: 11518632586
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$ 31.17 USD
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Ensure your coolant system is working properly and free of leaks. Gaskets and seals are necessary when replacing associated parts. Gasket that goes between the coolant pump and the engine block.
Schwaben - Corporate Logo
T#:377131
Part#: 004170SCH01A
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$ 52.69 USD
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These pliers feature a spring loaded clamp with a 24" cable and will lock onto the clamp and hold open for easy removal. These pliers are designed to remove metal or plastic self-tightening hose clamps with diameters from 11/16" to 2-1/2" ( 18 to 54mm).
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Genuine BMW - Corporate Logo
T#:636029
Part#: 11518482250
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$ 156.32 USD
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Genuine BMW - Corporate Logo
T#:541339
Part#: 11428583901
Ships Jun 30, 2025
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$ 210.11 USD
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Engine oil coolers help reduce the oil temperature, preventing the oil from breaking down prematurely and losing its lubricating properties. Engine oil coolers play a crucial role in regulating oil temperature, ensuring proper lubrication, and optimizing engine performance and longevity. Engine oil that is too hot drops in viscosity and does not provide adequate lubrication to sensitive engine components such as bearings, which can fail catastrophically if not properly lubricated. If your engine oil cooler has been damaged or has failed we recommend replacing it to ensure no damage occurs to your engine.
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Genuine BMW - Corporate Logo
T#:602507
Part#: 11518651287
Ships Jun 30, 2025
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$ 68.76 USD
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Auxillary water pumps are electric water pumps that pump coolant to critical components of your BMW. A failing pump can cause excessive noise and intermittent cooling issues, leading to potential damage if not replaced quickly enough. If the electric motor dies completely, chances are any parts downstream from the pump will overheat and fail, leading to costly repairs and replacements.
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Schwaben - Corporate Logo
T#:391482
Part#: 014710SCH01A
Ships on Sep 16, 2025
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$ 170.84 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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Genuine BMW - Corporate Logo
T#:617367
Part#: 11538642560
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$ 374.88 USD
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Modern BMW thermostats are electronically controlled, allowing the DME/ECU to directly regulate coolant flow throughout the engine and its components. This system enables the thermostat to operate based on a broader range of temperature inputs, such as coolant, cylinder head, engine block, and oil temperatures, for more refined control of engine warm-up and temperature across diverse conditions. Unlike traditional thermostats, which simply open or close to permit coolant flow, this system uses a rotary valve for more dynamic control. The rotary valve adjusts to various positions, allowing for partial or full coolant flow to designated passageways as needed. This precision control helps your BMW's engine reach optimal temperatures quickly and ensures efficient heat management under various driving conditions.
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Genuine BMW - Corporate Logo
T#:617366
Part#: 11538642559
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$ 412.34 USD
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Genuine BMW electronic thermostat that is controlled by the car's computer for optimal control over the engine and coolant's temperature.

Schwaben - Corporate Logo
T#:379950
Part#: 009787SCH01A
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$ 18.67 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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70-90mm 3/8"/9mm Band Hose Clamp
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ECS - Corporate Logo
T#:363017
Part#: 003402ECS06A-11
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$ 4.19 USD
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Upgrade your BMW with ECS Tuning's Stainless Steel Hose Clamps, designed for convenience and durability. With various band widths and German-style T-bolts, these clamps offer easy adjustment to your required diameter. Say goodbye to dealer pricing and enjoy the quality you love at ECS Tuning.

  • Full stainless steel construction
  • Various band widths available
  • German-style T-bolts for easy adjustment
  • Convenient solution for hose clamp replacement
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Genuine BMW - Corporate Logo
T#:6533
Part#: 07129952104
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$ 2.55 USD
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GENUINE BMW HOSE CLAMP 07129952104


1/2"/12mm Band Hose Clamp - 25-40mm - Priced Each
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ECS - Corporate Logo
T#:385425
Part#: 003402ECS05A-06
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Upgrade Your BMW Maintenance with Stainless Steel Hose Clamps from ECS Tuning

ECS Tuning introduces premium full stainless steel hose clamps, offering superior quality and convenience for your BMW maintenance. Avoid dealership delays and overpricing by choosing from a selection of band widths, ensuring you receive top-quality hose clamps without overpaying.

Key Benefits:

  • Premium full stainless steel hose clamps
  • Various band widths for enhanced convenience
  • High-quality alternative to dealership pricing
  • Readily available stock eliminates waiting time
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3/8"/9mm Band Hose Clamp - 50-70mm
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ECS - Corporate Logo
T#:341684
Part#: 003402ECS06A-12
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Elevate your BMW maintenance with ECS Tuning's 304 stainless steel hose clamps, offering convenience and top-quality performance at an affordable price. Designed with various band widths and German-style T-bolts for adjustable sizing, these hose clamps ensure a secure fit for your specific diameter needs. Skip the dealership wait and excessive pricing; ECS Tuning provides reliable, dealership-quality hose clamps without the premium cost, ensuring your car receives the care it deserves.
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Genuine Volkswagen Audi - Corporate Logo
T#:26038596
Part#: N02035327
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$ 12.03 USD
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Experience optimal performance in your BMW with the replacement of vacuum hoses. Vacuum leaks can disrupt engine operation, affecting fuel efficiency and idle stability. Don't let damaged hoses compromise your driving experience. Replace them with high-quality replacements to restore your BMW's performance.
  • Improve engine operation
  • Enhance fuel efficiency
  • Ensure stable idle
  • High-quality replacement for damaged hoses
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Genuine BMW - Corporate Logo
T#:624783
Part#: 11539494424
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$ 11.26 USD
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This preformed seal is an o-ring seal that seals the connection between the thermostat housing/heat management module and the engine block. This seal is the larger of two seals located on the side of the heat management module.
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Genuine BMW - Corporate Logo
T#:622579
Part#: 11539425963
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$ 3.94 USD
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Seals the connection between the Heat Management Module and the water pump housing
60-80mm 1/2"/12mm Band Hose Clamp
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ECS - Corporate Logo
T#:377836
Part#: 003402ECS05A-10
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ECS Tuning Stainless Steel Hose Clamps for BMW

Upgrade your BMW's hose clamps with ECS Tuning Stainless Steel Hose Clamps, designed for convenience and durability. Say goodbye to long waits and overpriced dealership clamps. With various band widths available, these stainless steel clamps ensure a secure fit for your vehicle's hoses.

Benefits:

  • Convenient replacement for worn-out hose clamps
  • Made of durable stainless steel for long-lasting performance
  • Available in various band widths for versatile use
  • Affordable alternative to dealership pricing
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Genuine BMW - Corporate Logo
T#:526204
Part#: 11538658572
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$ 7.91 USD
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O ring that seals the thermostat to the coolant pump. New seals are a must when doing any repairs.
Hose Clamp 2 5/16" - 3 1/4" - priced each
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ECS - Corporate Logo
T#:376806
Part#: 54155K23
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$ 4.20 USD
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Hose Clamp 2 5/16" - 3 1/4"

Ensure secure hose connections with the Hose Clamp 2 5/16" - 3 1/4", a versatile and reliable solution for various applications. Crafted from durable materials, this clamp offers superior strength and corrosion resistance. Its adjustable design allows for a snug fit, reducing the risk of leaks and ensuring optimal performance. Upgrade your hose connections with the precision and reliability of the Hose Clamp 2 5/16" - 3 1/4".

  • Versatile and reliable solution for various applications
  • Superior strength and corrosion resistance
  • Adjustable design for a snug fit
  • Reduces risk of leaks for optimal performance
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Uro - Aluminum Coolant Hose Connector for E9x, and Z4
We Price Match - Give Us A Call or Chat!
URO - Corporate Logo
T#:37757289
Part#: 11537545890PRMK
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$ 17.95 USD
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Aluminum Connector that replaces the OEM brittle Plastic

77-85mm - 3/4" Band Hose Clamp
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ECS - Corporate Logo
T#:377877
Part#: 003402ECS07A-05
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$ 14.39 USD
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Upgrade your BMW's hose clamps with the 77-85mm - 3/4" Band Hose Clamp from Turner Motorsport. These full 304 stainless steel clamps offer convenience and quality without the dealership price tag. German-style T-bolts allow for easy adjustment to your required diameter, ensuring a secure fit every time.

  • Made of durable 304 stainless steel for long-lasting performance
  • German-style T-bolt design for easy size adjustment
  • Convenient band widths for versatile applications
  • Quality alternative to dealership pricing
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Genuine BMW - Corporate Logo
T#:624784
Part#: 11539494425
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$ 11.26 USD
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This preformed seal is an o-ring seal that seals the connection between the thermostat housing/heat management module and the engine block. This seal is the larger of two seals located on the side of the heat management module.
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Schwaben - Corporate Logo
T#:384260
Part#: 015326SCH01A
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$ 2.28 USD
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$ 2.28 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.


Genuine BMW - Corporate Logo
T#:222845
Part#: 11538658571
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$ 11.68 USD
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Gasket that goes between the thermostat and radiator return pipe. Gaskets and seals are a wear item that should be replaced in conjunction with associated parts.
Band Hose Clamp | 12-20mm 3/8"/9mm
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ECS - Corporate Logo
T#:304266
Part#: 003402ECS06A-03
In Stock
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$ 2.99 USD
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Secure hoses in your BMW effortlessly with the ECS 3/8" / 9mm Band Hose Clamp (12-20mm). Specifically designed for BMW models, this clamp ensures a snug fit and reliable hold for hoses measuring between 12mm to 20mm. Crafted with durable materials, these clamps provide exceptional resistance against leaks and are ideal for various automotive applications. Upgrade your BMW's hose security with these reliable ECS hose clamps.
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70-78mm - T-Bolt Hose Clamp - Priced each
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ECS - Corporate Logo
T#:380416
Part#: 003402ECS07A-03
In Stock
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$ 17.99 USD
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$ 17.99 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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40-60mm 3/8"/9mm Band Hose Clamp
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ECS - Corporate Logo
T#:341280
Part#: 003402ECS06A-08
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$ 1.79 USD
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$ 1.79 USD
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ECS Tuning 304 Stainless Steel Hose Clamps

Revolutionize your car maintenance with ECS Tuning's premium 304 stainless steel hose clamps. Eliminate dealership delays and inflated prices! These German-style clamps utilize T-bolts for hassle-free diameter adjustment. With various band widths available, these durable clamps ensure reliability without the hefty cost. Experience dealership-quality products at affordable rates, exclusively at ECS Tuning.

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90-110mm 3/8"/9mm Band Hose Clamp
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ECS - Corporate Logo
T#:341281
Part#: 003402ECS06A-13
In Stock
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$ 0.99 USD
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$ 0.99 USD
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ECS Tuning 304 Stainless Steel Hose Clamps

Once again, ECS Tuning has found a way to make life easier for working on your car. Need new hose clamps but don't want to wait to order it from the dealership or pay more than you should for a hose clamp? That's where we come in! These are full 304 stainless steel hose clamps with various band widths for your convenience. They are German style using T-bolts to adjust in size to your required diameter. Never pay dealer pricing again, but still get the quality you love here at ECS Tuning.

  • Made from high-quality 304 stainless steel for durability
  • German-style design with T-bolts allows for easy size adjustment
  • Various band widths for versatile use
  • Avoid dealership pricing without compromising on quality
  • Perfect for BMW enthusiasts seeking affordable yet reliable hose clamps
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Genuine BMW Water Pump & Thermostat Kit - BMW B58C B58D (B58TU) ...
For models without the 48V Mild Hybrid package
Genuine BMW - Corporate Logo
T#:29333997
Part#: 11518482251KT
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$ 661.37 USD
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If your water pump or thermostat has failed, this kit includes all the basic components needed to replace and restore your cooling system! Included: Water Pump Thermostat Housing (aka Heat Management Module) Coolant Outlet Pipe (L-Pipe) Gaskets & Seals
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Genuine BMW - Corporate Logo
T#:29333998
Part#: 11515A444F4KT
In Stock
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$ 661.37 USD
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Sale - Save 3% $ 681.99
$ 661.37 USD
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If your water pump or thermostat has failed, this kit includes all the basic components needed to replace and restore your cooling system! Included: Water Pump Thermostat Housing (aka Heat Management Module) Coolant Outlet Pipe (L-Pipe) Gaskets & Seals
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URO - Corporate Logo
T#:42436716
Part#: 11428583901
Ships in 1 Business Day
New Item
Sale - Save 7% $ 49.99
$ 46.34 USD
Sale - Save 7% $ 49.99
$ 46.34 USD
Engine oil coolers are critical for keeping oil temperatures in check, preventing premature breakdown and maintaining proper lubrication. When oil gets too hot, it loses viscosity and can't effectively protect vital engine components like bearings—which can lead to serious, even catastrophic, failures. If your oil cooler is damaged or has failed, replacing it is essential to protect your engine and keep everything running smoothly.
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Genuine BMW - Corporate Logo
T#:545300
Part#: 11538630023
Ships Jul 3, 2025
Sale - Save 3% $ 149.99
$ 145.31 USD
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Sale - Save 3% $ 149.99
$ 145.31 USD
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Coolant pipe that runs from the thermostat next to the engine block. Make sure your cooling system is working properly and leak free. When your in the tight spaces doing a service it makes sense to change all associated parts.
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Genuine BMW Cooling Pump with Support - 11518650986
For vehicles without Energy Recuperation System (O1CE) produced before 07/20
Genuine BMW - Corporate Logo
T#:606623
Part#: 11518650986
Ships Jun 30, 2025
Sale - Save 3% $ 263.99
$ 255.81 USD
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Sale - Save 3% $ 263.99
$ 255.81 USD
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This water pump is provided with all associated installation components, including:

11518482251 - Water Pump 11518650986 - Water Pump Bracket to Engine Block 11518482263 - Water Pump profile Gasket 11518482264 - Profile Gasket for Bracket to Engine Block 11518482258 - Coolant Pipe to Water Pump 11518482260 - O-ring Seal for Coolant Pipe

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Genuine BMW - Corporate Logo
T#:613991
Part#: 17428666819
Ships Jun 30, 2025
Sale - Save 5% $ 1,271.99
$ 1,207.73 USD
Sale - Save 5% $ 1,271.99
$ 1,207.73 USD

Enhance Engine Cooling with Genuine BMW Fan Housing with Fan (Part Number: 17428666819)

Maintain your vehicle's cooling system efficiency with the Genuine BMW Fan Housing with Fan (Part Number: 17428666819). This authentic BMW replacement component adheres to the manufacturer's stringent quality standards, ensuring precision engineering and durability.

Designed to seamlessly fit BMW vehicles, this fan housing with a fan assembly guarantees optimal cooling performance, essential for enhancing your vehicle's longevity and overall performance. Rely on Genuine BMW parts for their perfect integration and dependable functionality.

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Genuine BMW - Corporate Logo
T#:613575
Part#: 64116834917
Ships Jun 30, 2025
Sale - Save 3% $ 257.99
$ 249.54 USD
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Sale - Save 3% $ 257.99
$ 249.54 USD
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eplace your faulty or failing electric water pump with this Genuine BMW pump for guaranteed reliability. This water pump feeds coolant to the turbo, keeping temperatures optimal for performance and smooth operation.
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Cap
D=6
Genuine BMW - Corporate Logo
T#:191368
Part#: 17128515062
Ships Jun 30, 2025
Sale - Save 5% $ 10.99
$ 10.43 USD
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Sale - Save 5% $ 10.99
$ 10.43 USD
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Genuine BMW Cap -
This item fits the following BMW Chassis:
F15,F25 X3

Fits BMW Engines including:
N57N

Genuine BMW - Corporate Logo
T#:222843
Part#: 11428583897
Ships Jun 30, 2025
Sale - Save 3% $ 48.99
$ 47.52 USD
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Sale - Save 3% $ 48.99
$ 47.52 USD
Free Shipping on orders $49 and up

Situated on the engine's oil filter housing, this set of gaskets plays a crucial role in sealing the housing to the engine block. Over time, exposure to heat and oil can cause these rubber gaskets to become brittle, compromising their ability to seal the mating surfaces effectively.

Given that oil flows from the block to the filter housing, any leaks from these seals can lead to significant issues. Fortunately, BMW offers a comprehensive set of these gaskets, providing a solution to all oil leaks and restoring your vehicle to optimal performance.

How can you identify if your oil cooler gaskets are leaking?

Oil drips beneath the car when it's parked. Visible oil accumulation on the intake/heat exchanger side of the engine block. Frequent low oil level warnings during driving.

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