2019+ 6.7 Cummins Hamilton solid flat tappet conversions 

Its not a matter of "if" its a matter of when your Gen-5 Cummins 6.7 engines will have a upper end pushrod/rocker-arm failure or a lower end hydraulic roller tappet/cam lobe failure! Unfortunately we are seeing very early milage failures on properly maintained trucks. The Hamilton flat tappet conversion retro kits are a perinate fix for these issues and brings your valvetrain back to a Gen-4 Cummins long lasting valvetrain that has been proven for many decades!