sometimes passenger side gets water in truck??

[jasonroman]

since i have had truck, i notice that when it rains, i get water dripping in on the passenger side. a while back i posted this same issue and someone told me what it was??? since then, i forgot what the parts called. and in last 3weeks ive had bad luck
one day on way to work, had no choice but to run over a wheel in the road. damaged pass fender a door a little. blew tire.
then saturday, on way to work, my driver side wheel chose to fall off truck while i was going over bridge. more fender damage.
so now id llike to know wat that part is so when i get my fenders i can get the part i need to keep water out of my truck.
thanks for any help

also, should i get new inner fenders too??