This is a replacement driveshaft support/carrier bearing assembly. Possible symptoms needing this replacement would be a thumping feeling at the top of 1st gear at WOT under the vehicle. When the rubber ages or tears in the factory support the driveshaft does not spin straight anymore. This is a direct replacement, the Chrysler dealership does not sell this assembly alone. Instead they require selling a entire driveshaft assembly (~$1,200.00).Press is not required for install.