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BMW Coolant Expansion Tanks for BMW X Series F25 (2011+)

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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AutoTecknic Dry Carbon Coolant Expansion Tank Cap Cover - Gloss Carbo...

T#:39497984

Part#: BM-0803-GC

Ships in 7 Business Days

$ 74.99 USD

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$ 74.99 USD

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Turner Motorsport offers the AutoTecknic Dry Carbon Coolant Expansion Tank Cap Cover - Gloss Carbon as the perfect addition for BMW owners looking to elevate their engine bay’s appearance with premium materials and precision engineering.

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Coolant Expansion Tank Cap

T#:36032339

Part#: 17117639020

In Stock

Sale - Save 20% $ 14.99

This product was last offered at the strikethrough price on
05-03-2026

$ 11.99 USD

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Sale - Save 20%

$ 14.99

This product was last offered at the strikethrough price on
05-03-2026

$ 11.99 USD

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Coolant Expansion Tank Cap

2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!

T#:373591

Part#: 17117521071

In Stock

$ 18.99

This product was last offered at the strikethrough price on
03-09-2026

$ 14.49 USD

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$ 14.49 USD

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Keep that coolant expansion tank sealed

Coolant Expansion Tank

2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!

T#:593078

Part#: 17138616418

Back Ordered

$ 63.99 USD

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$ 63.99 USD

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The coolant expansion tank in your vehicle gives additional fluid a place to go after expansion and contraction from temperature change. Because it is subjected to such drastic changes on a regular basis, it can often crack or break.

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