my fan died after 110k miles. i went with a factory replacement. it took about 30min to get the shroud out since i did not want to take the upper rad hose off and took about 5min to get back in since i took the upper hose off "which i would suggest do from the start". the fan is held on with 3 bolts and a relay. the shroud is on with 4 bolts. it is very easy to do.