5 Best 5.9L Common-Rail Cummins Upgrades

Pthorpe84

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Check Out These Other Diesel Stories! EFILive-Tuned Cummins Duramax vs. Cummins Whenever the question, “What is the all-time best diesel engine (installed in pickup trucks)?” is asked among hardcore diesel enthusiasts, the very subjective responses usually favor Cummins’ venerable 5.9L oil burners, the 12- and 24-valve engines that powered Dodge Ram rigs from 1989 to

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