Aluminum Coolant Expansion Tank for BMW G30 (B58/B48)

No more coolant warning issues. All G30 Gen1 expansion tanks suffer from "Hairline cracks". This is the permanent solution to never deal with coolant leak!

Compatible with G30 540i/530i

NO REFUNDS OR EXCHANGES

Installation Guide : 

https://youtu.be/EnApTKXOvjc