I fixed a customers 6.5 that had A DIY install of one of these oil cooler line and cooler kits not sure of the vendor he paid about 225 he said and I ended up with the rework. He neglected to replace filter adapter o rings and also gouged one of the fittingd right on the tapered portion causing a leak, local tractor shop had the fitting and I got it all done for him. Oh forgot to tell you he had some napa factory style lines in the bed new but all dicked up from a hack job install!!!