5.9 Cummins Diesel Towing capacity

I’m running ARP head studs on my 5.9. This is necessary due to the increase pressures associated with the 150 hp gain. I don’t run at max because I don’t have to. If the 5.9 were stock, it would be running at max, all the time and something will certainly break. Good driving skill, and Good understanding Of how your engine uses horsepower and torque is the key to longevity and worry free towing. Anything other than that is abusing your equipment and it is going to fail. If those modifications are not your thing, get a newer tow vehicle with worry free mechanicals. I’m fortunate to have both worlds.