Cooling system parts?

[BMSman]

I need to replace the cooling system in my 01 740i.

fcp groton is offering 20% discount + free shipping which looks to be 60 or 70 less than oembimmer for essentially the same parts.

Questions are:

Do I need an expansion tank hose or is it included with the tank (Behr) or reuse old one OK?

Coolant level sensor - reuse or replace?

Neither of the above parts seem to be included in the cooling system kits. Just want to be sure I get everything I need.....

Got the fan clutch, radiator, exp tank and cap, aux fan switch, water pump + thermostat, upper + lower hoses, coolant and belts.

[007008]

some tanks come with the level sensor. If your going through the trouble of replacing some of the hoses go and change ALL the hoses. The system is only as good as the oldest hose.

[IcemanBHE]

The system is only as good as the oldest hose.

True dat. Or weakest part...

[motion]

+1 on weakest part! example "O" rings on coolant pipes at rear accumulator.