BMW Coolant Expansion Tanks for BMW 6 Series F06 (2013+)

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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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Vaico Coolant Overflow Hose - Radiator to Expansion Tank - BMW F01 F02 N63 4.4L
Vaico Coolant Overflow Hose - Radiator to Expansion Tank - BMW F01 F0...
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T#:595421
Part#: 17127575428
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$ 143.99

This product was last offered at the strikethrough price on
08-13-2026

$ 80.99 USD
Free Shipping on orders $49 and up
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$ 80.99 USD
Free Shipping on orders $49 and up
Add to Wish List
Overflow hoses connect the radiator and the expansion tank to store overflow of coolant. As pressures in the cooling system increase due to coolant temperatures, a valve on the radiator cap permits coolant back into the reservoir to help ease the build-up of pressure and prevent coolant loss. If your hose is leaking or damaged, we recommend swapping it out with this replacement from Vaico.
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