Our Sinister Diesel Complete Solution kits are designed to increase the strength of your 6.7L Cummins engine so that it can handle additional horsepower and torque without the problems often associated with upgraded performance. We assemble each Cummins Complete Solution kit with a Sinister Diesel upgraded EGR cooler, ARP head studs and Mahle gaskets for a complete solution that takes all the guesswork out of completing the job correctly. From fasteners to gaskets, we have you covered with a custom tailored solution that will ensure trouble-free performance and protect against possible engine damage with the benefit of increased power from quality parts.