This is a great video created by http://bhdtruckparts.com/peterbilt/radiators/
A properly-built, trustworthy radiator is one of the most essential items to keeping your Peterbilt on the streets. If you should upgrade or replace the radiator that came with your truck, it is far from an investment that should be taken lightly. Although there are lots of aftermarkets Peterbilt radiators, not all of them are made the same.
BHD Truck Parts, Inc.
Lee's Summit, MO
(800) 201-3168