Home
Cooling
Expansion Tanks

BMW Coolant Expansion Tanks for BMW G01 X3 xDrive30i B46 2.0L

Clear BMW chassis

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.

Sort By:

Coolant Expansion Tank Cap

10X Entries Into Our F80 M3 Sweepstakes

T#:36032339

Part#: 17117639020

In Stock

Sale - Save 20% $ 14.99

This product was last offered at the strikethrough price on
09-17-2026

$ 11.99 USD

Add to Wish List

Qty

Sale - Save 20%

$ 14.99

This product was last offered at the strikethrough price on
09-17-2026

$ 11.99 USD

Add to Wish List

Coolant Expansion Tank

T#:56544004

Part#: 17135A6A030

Special Order: No Guaranteed ETA

$ 82.99 USD

Add to Wish List

Qty

$ 82.99 USD

Add to Wish List

This Febi Bilstein coolant expansion tank delivers the strength and exact fitment needed to keep your BMW's cooling system locked down.

Coolant Expansion Tank Cap

T#:56001934

Part#: 46221

Special Order: No Guaranteed ETA

$ 19.99 USD

Add to Wish List

Qty

$ 19.99 USD

Add to Wish List

This Febi Bilstein coolant expansion tank cap is designed to maintain the exact 1.4 bar pressure required to maximize your coolant's boiling point.

Select Vehicle

Category

Home
Cooling

Expansion Tanks

Brand

Price

Special Offers