BMW Coolant Expansion Tanks for MINI

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On certain models, namely E36, E46, and E90, the factory BMW expansion tank is prone to either breaking at connection points or blowing apart altogether. If you're starting to feel like your expansion tank is on borrowed time, it's probably time to replace with either a direct OE replacement, or strengthen your cooling setup with an aluminum expansion tank - we offer numerous performance upgrades for your expansion tank. Especially if you're someone who likes to track your BMW, we recommend upgrading your expansion tank to avoid ruining your track day.
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Coolant Expansion Tank
Coolant Expansion Tank
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Rein - Corporate Logo
T#:388723
Part#: 17137823626
In Stock
$ 78.99 USD
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$ 78.99 USD
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Mounts towards the front of the engine bay
Radiator Expansion Tank - Behr
Radiator Expansion Tank - Behr
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Mahle-Behr - Corporate Logo
T#:579568
Part#: 376737181
Ships in 1-2 days
$ 65.86 USD
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$ 65.86 USD
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OEM Behr Radiator Expansion Tank - MINI Cooper R50 R52
OEM Behr Radiator Expansion Tank - MINI Cooper R50 R52
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Mahle-Behr - Corporate Logo
T#:19450
Part#: 17107509071
Ships in 3 Business Days
$ 36.99 USD
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$ 36.99 USD
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This high quality BEHR brand expansion tank is used on MINI Cooper R50 R52, and is a common failure item. BEHR was the original equipment supplier to BMW, so you know the BEHR made expansion tank will be the highest quality available. Be cautious of competitors selling this part for less -- is it a BEHR? Probably not. We only carry the BEHR brand expansion tank as it is the only one we use in our own MINIs. If you are overhauling your coolant system, now is the time to consider preventative replacing this expansion tank. These are known to go bad, causing a leak which can leave you stranded. We have found that the expansion tanks should be replaced based on age as well as condition. Expansion tanks seem to have a lifespan of less than six years before they show signs of fatigue and wear. Pre-emptively replacing the expansion tank as part of an overall maintenance plan can prevent you from getting stranded from a sudden failure later on.

Hailing from Stuttgart, Mahle-Behr specializes in automotive cooling systems. From air conditioning to engine cooling M-B has you covered with OE-quality replacement parts.

This item fits the following MINIs:
2002-2006 R50 MINI MINI Cooper
2005-2008 R52 MINI MINI Cooper Convertible.
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Coolant Expansion Tank - R56 MINI Cooper S
Coolant Expansion Tank - R56 MINI Cooper S
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Mahle-Behr - Corporate Logo
T#:46488
Part#: 17137823626
Back Ordered
$ 67.99 USD
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$ 67.99 USD
Free Shipping on orders $49 and up
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This high-quality BEHR brand expansion tank is used on MINI Cooper R55 R56 and is a common failure item. BEHR was the original equipment supplier to BMW, so you know the BEHR made expansion tank will be the highest quality available. Be cautious of competitors selling this part for less -- is it a BEHR? Probably not. We only carry the BEHR brand expansion tank as it is the only one we use in our own MINIs. If you are overhauling your coolant system, now is the time to consider preventative replacing this expansion tank. These are known to go bad, causing a leak which can leave you stranded. We have found that the expansion tanks should be replaced based on age as well as condition. Expansion tanks seem to have a lifespan of fewer than six years before they show signs of fatigue and wear. Pre-emptively replacing the expansion tank as part of an overall maintenance plan can prevent you from getting stranded from a sudden failure later on.

Hailing from Stuttgart, Mahle-Behr specializes in automotive cooling systems. From air conditioning to engine cooling M-B has you covered with OE-quality replacement parts.

This item fits the following MINIs:
2007+ R56 MINI MINI Cooper, MINI Cooper S
2007+ R55 MINI MINI Cooper Clubman, MINI Cooper S Clubman
2007+ R57 MINI MINI Cooper Convertible, MINI Cooper S Convertible,
2011+ R60 MINI MINI Cooper Countryman, MINI Cooper Countryman S


This item fits the following BMWs:
2015+ I01 BMW i3
2015+ I12 BMW i8
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Expansion Tank - 17137617362
Expansion Tank - 17137617362
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Rein - Corporate Logo
T#:46478556
Part#: EPT0238
Ships in 3 Business Days
$ 56.99 USD
Free Shipping on orders $49 and up
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$ 56.99 USD
Free Shipping on orders $49 and up
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These expansion tanks tend to leak and will need replaced
Coolant Expansion Tank W/ Cap
Coolant Expansion Tank W/ Cap
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Rein - Corporate Logo
T#:592210
Part#: 17137529273
In Stock at Vendor
$ 44.99 USD
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$ 44.99 USD
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Rein Reservoir Hose R50 / R52
Rein Reservoir Hose R50 / R52
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2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Rein - Corporate Logo
T#:34114213
Part#: 17127526414
Ships in 3 Business Days
$ 9.99 USD
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$ 9.99 USD
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Reservoir Hose CHE0885 is a top-quality replacement part designed for BMW vehicles, ensuring a reliable connection between your vehicle’s reservoir and cooling system. Engineered for durability and heat resistance, this hose provides a seamless flow of coolant to maintain optimal engine temperature, preventing overheating. Reservoir Hose CHE0885 is made to meet or exceed OEM specifications, ensuring a perfect fit for your BMW. Available through Turner Motorsport, this hose is an essential component for keeping your vehicle's cooling system functioning efficiently.

  • High-quality reservoir hose for BMW vehicles
  • Ensures reliable coolant flow for optimal engine performance
  • Made from heat-resistant, durable materials
  • Prevents overheating and engine damage
  • Meets or exceeds OEM specifications
  • Perfect fit for a variety of BMW models
  • Available from trusted supplier Turner Motorsport
  • Easy to install with secure connections
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