How To Replace The Coolant Expansion Tank On A 3 Series E46 BMW (1999-2005) 2.5L

Today we are replacing the coolant expansion tank on our 2002 BMW 325I E46. This has the inline 6 M54 motor that is also found in other 3 series e46's. We replaced the expansion tank due to a coolant leak. The cooling systems are the achilles heel of the e46 platform. In this video we go over the process of replacing the expansion tank as well as bleeding the cooling system. The process isn't too hard. Make sure to buy a quality part and take your time with installation!
The video is for informational purposes only! Take the information you learn in this video and apply it at your own risk. Big Girls Garage assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. Use this information at your own risk.
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[@MrAmerican1998]

Good tutorial. Subscribed.

[@biggirlsgarage8331]

More to come...

[@legamer6097]

After removing all three hoses the expansion tank is still stuck on the mounting plate. Any idea?

[@juanpablocastaneda7165]

Why are these thing so complicated to change. There is NO space

[@juanpablocastaneda7369]

Is that plastic?

[@biggirlsgarage8331]

Of course. It's bmw

[@Olufunt]

Benis expansion pump

[@biggirlsgarage8331]

Bimboelecto

[@juanpablocastaneda7165]

Benictindundus