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BMW Coolant Expansion Tanks for MINI

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

2X Entries Into Our F80 M3 Sweepstakes

T#:388723

Part#: 17137823626

In Stock

Sale - Save 5% $ 78.99

This product was last offered at the strikethrough price on
08-31-2026

$ 75.04 USD

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Sale - Save 5%

$ 78.99

This product was last offered at the strikethrough price on
08-31-2026

$ 75.04 USD

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Mounts towards the front of the engine bay

Rein Reservoir Hose R50 / R52

2X Entries Into Our F80 M3 Sweepstakes

T#:34114213

Part#: 17127526414

Ships in 4 Business Days

Sale - Save 13% $ 9.99

This product was last offered at the strikethrough price on
08-31-2026

$ 8.71 USD

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Sale - Save 13%

$ 9.99

This product was last offered at the strikethrough price on
08-31-2026

$ 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.