Bottom Bracket for Electra Cruiser 1?

[econoline]

I have an Electra Cruiser 1 (2008) with three piece crank that will need a new BB soon. I'd like to replace it with a better quality unit than the original. Anybody know the bottom bracket specs for that bike? Thinking maybe I could use a Shimano sealed BB. Thanks.

 

[subadrew]

3 piece??? you sure?

 

[econoline]

3 piece??? you sure?

Yes, 3 piece, bottom bracket and two crankarms.