Rein 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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Coolant Return Line
Coolant Return Line
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T#:53856300
Part#: 11538650087
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$ 60.99 USD
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$ 60.99 USD
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Rein Automotive turbo hoses are engineered to meet these rigorous demands, providing the reliability required for both the track and the street.
OEM Rein Turbocharger Coolant Supply Line - BMW Gen2 B46/B48 2.0L
OEM Rein Turbocharger Coolant Supply Line - BMW Gen2 B46/B48 2.0L ...
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2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
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T#:34315143
Part#: 11538629971
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$ 47.99

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

$ 42.99 USD
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$ 42.99 USD
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Turbo coolant supply lines feed coolant to the turbocharger, ensuring temperatures are kept in check. If your coolant line is leaking, it is important to replace it as soon as possible to prevent coolant loss, overheating, and turbo damage.
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Rein Water Feed Tube with O-Ring G20 330i, G30 530i, G01 X3 30i
Rein Water Feed Tube with O-Ring G20 330i, G30 530i, G01 X3 30i ...
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2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
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T#:34181294
Part#: 11538854737
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$ 46.99 USD
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$ 46.99 USD
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The Rein Water Feed Tube with O-ring CHT0924 is a premium replacement part designed for BMW vehicles, ensuring optimal engine cooling performance. Manufactured with high-quality materials, this water feed tube guarantees durability and a precise fit, making it an ideal solution for restoring or upgrading your BMW’s cooling system. Available through Turner Motorsport, this part ensures the prevention of coolant leaks and maintains the efficiency of your vehicle’s cooling system.

This water feed tube is engineered to withstand the intense heat and pressure found in high-performance engines, delivering long-lasting reliability. It’s compatible with a variety of BMW models, making it a versatile choice for both professional mechanics and DIY enthusiasts.

Benefits:

  • Precise fitment: Specifically designed for BMW applications to ensure seamless replacement.
  • High-quality materials: Built to endure high-temperature and high-pressure environments.
  • O-ring seal: Ensures a leak-proof connection, preventing coolant loss and engine overheating.
  • Optimized engine performance: Helps maintain consistent engine temperatures for improved vehicle performance.
  • Available at Turner Motorsport: Trusted source for BMW parts and accessories.

Keep your BMW running smoothly with the Rein Water Feed Tube with O-ring CHT0924, designed to restore your cooling system’s functionality and keep your engine in peak condition.

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Rein Aluminum Oil Filter Housing - BMW B58
Rein Aluminum Oil Filter Housing - BMW B58
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T#:49404665
Part#: 11428583901
In Stock at Vendor
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$ 408.99 USD
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$ 408.99 USD
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For those who push their engines to the limit, "good enough" is a liability. Upgrade to the Rein HEU0116 Aluminum Oil Filter Housing—the professional’s choice for durability and peace of mind.

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