Rein 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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T#:388723
Part#: 17137823626
In Stock at Vendor
Sale - Save 5% $ 78.99

This product was last offered at the strikethrough price on
06-29-2026

$ 75.04 USD
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$ 78.99

This product was last offered at the strikethrough price on
06-29-2026

$ 75.04 USD
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Mounts towards the front of the engine bay
Expansion Tank - 17137617362
Expansion Tank - 17137617362
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T#:46478556
Part#: EPT0238
Ships in 3 Business Days
Sale - Save 7% $ 56.99

This product was last offered at the strikethrough price on
06-29-2026

$ 53.28 USD
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Sale - Save 7%
$ 56.99

This product was last offered at the strikethrough price on
06-29-2026

$ 53.28 USD
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These expansion tanks tend to leak and will need replaced
Coolant Expansion Tank W/ Cap
Coolant Expansion Tank W/ Cap
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T#:592210
Part#: 17137529273
In Stock at Vendor
Sale - Save 5% $ 44.99

This product was last offered at the strikethrough price on
06-29-2026

$ 42.74 USD
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$ 44.99

This product was last offered at the strikethrough price on
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$ 42.74 USD
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Rein Reservoir Hose R50 / R52
Rein Reservoir Hose R50 / R52
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T#:34114213
Part#: 17127526414
Ships in 3 Business Days
Sale - Save 13% $ 9.99

This product was last offered at the strikethrough price on
06-29-2026

$ 8.71 USD
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Sale - Save 13%
$ 9.99

This product was last offered at the strikethrough price on
06-29-2026

$ 8.71 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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