my car go out water of radiator whats i need. radiator cap, thermostat... when stop car the radiator buble...

well first of i think you need to check for leaks (presure test the system).
second when does it acure when driving often under havy load if so you need to get more cold air under the hood.
thermostat
radiatorcap
koyo radiator
slim fans
al that kind of stuff would always be good in my opinion

check your WATERPUMP!

waterpump gasket could be leaking

could be head gasket. fill it up and make sure to bleed all the air out then keep an eye on the coolant level and temp for a couple of days. if your loosing coolant and you dont see it leaking besides boiling out of the bottle then you probrobly have a blown head gasket.