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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Schwaben Coolant Refill/Air Purge Tool
Schwaben Coolant Refill/Air Purge Tool
Schwaben - Corporate Logo
T#:362940
Part#: 003466SCH01
Ships on Aug 1, 2025
Sale - Save 15% $ 106.99
$ 90.94 USD
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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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Coolant Vacuum Purge & Refill Tool Set
Coolant Vacuum Purge & Refill Tool Set
Schwaben - Corporate Logo
T#:402498
Part#: 024948SCH01A
In Stock
Sale - Save 15% $ 112.99
$ 96.04 USD
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Sale - Save 15% $ 112.99
$ 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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419 Pc. Metric Universal O-Ring Assortment
419 Pc. Metric Universal O-Ring Assortment
ATD Tools - Corporate Logo
T#:3657943
Part#: ATD3601
Ships in 1 Business Day
$ 33.99 USD
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$ 33.99 USD
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Always have extra o-rings
Schwaben Locking Hose Clamp Pliers
Schwaben Locking Hose Clamp Pliers
Schwaben - Corporate Logo
T#:377131
Part#: 004170SCH01A
In Stock
Sale - Save 15% $ 61.99
$ 52.69 USD
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Sale - Save 15% $ 61.99
$ 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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Gear Wrench Angled Hose Clip Pliers
Gear Wrench Angled Hose Clip Pliers
Gear Wrench - Corporate Logo
T#:387079
Part#: KDT3977
Ships in 1 Business Day
$ 29.99 USD
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$ 29.99 USD
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This tool is a variation of our popular 3976 Flat Band Hose Clamp Pliers and features 45º jaws with swivel tips to grip at any angle and pliers that latch securely in position.
Fan Clutch Wrench - 32mm
Fan Clutch Wrench - 32mm
CTA Tools - Corporate Logo
T#:641760
Part#: CTAA878
Ships Jul 14, 2025
$ 23.99 USD
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$ 23.99 USD
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Use to remove and install Fan Clutch Assemblies when replacing Water Pumps or doing other Engine Services
Radiator Pressure Tester Kit
Radiator Pressure Tester Kit
Schwaben - Corporate Logo
T#:391482
Part#: 014710SCH01A
Ships on Sep 16, 2025
Sale - Save 15% $ 200.99
$ 170.84 USD
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Sale - Save 15% $ 200.99
$ 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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Anti-Freeze Tester
Anti-Freeze Tester
CTA Tools - Corporate Logo
T#:641679
Part#: CTAA195
In Stock
$ 9.99 USD
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$ 9.99 USD
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Tests all ethylene glycol solutions with radiator hot or cold
Schwaben Locking Hose Pinch-Off Pliers
Schwaben Locking Hose Pinch-Off Pliers
Schwaben - Corporate Logo
T#:379950
Part#: 009787SCH01A
In Stock
Sale - Save 50% $ 36.99
$ 18.67 USD
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Sale - Save 50% $ 36.99
$ 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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Schwaben Radiator/ Intercooler Fin Comb
Schwaben Radiator/ Intercooler Fin Comb
Schwaben - Corporate Logo
T#:384260
Part#: 015326SCH01A
In Stock
Sale - Save 89% $ 19.99
$ 2.28 USD
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Sale - Save 89% $ 19.99
$ 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.
Radiator Pressure Test kit 14 pc
Radiator Pressure Test kit 14 pc
ATD Tools - Corporate Logo
T#:3629267
Part#: ATD3300
Ships in 6 Business Days
$ 262.99 USD
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$ 262.99 USD
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Adapters for most European and domestic vehicles

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