When replacing the front damage cooling radiator, it is also recommended to replace the fan and the plastic reservoir?

What is your question?

The car was made in the year 2004. Today is 2019. After15 years when replacing the damage radiator also is better to replace the fan and the cooling reservoir? What is the life time of those parts? THANK YOU.

What makes this problem better or worse?

After driving and let the car cooling in the parking over night time.

How long has your 2004 Scion xB had this problem?

Ihad tis problem for one year.