BMW X5 Expansion Tank Replacement E70 With The N55 6 Cylinder Part Number 17137552546

I show you how to EASILY replace the EXPANSION TANK on a BMW X5 E70 with the N55 6 Cylinder Twin Turbo Engine. This complete DIY shows you how to complete the repair and bleed the vehicle cooling system. An expansion tank is also called a coolant reservoir. When your cooling system is under pressure from temperature there needs to be room for coolant displacement due to thermal expansion.
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