We can rebuild your 4.0 D4 A6-S8 or C7 S6-7 turbochargers. These turbos fail due to poor oil pressure/flow. If your exhaust manifolds are not damaged you can purchase our supercores instead and save money.
To take advantage of the 1 year warranty we offer on our turbo you must replace all the parts outlined in TSB 2-44640 on the same retail invoice as the turbos. Here is a link to this TSB.