and i`m gonna say 07 and up, but its all in how its used and abused. lol
i`ve had two 05`s and together they have had 5 sets of head gaskets, 5 egr cooler replacements, 3 FICM modules, 19 individual injector(s) replacements, 2 egr valves.
But i will say these trucks did not get the best...