Known problems
What goes wrong on the 6.7L Cummins diesel
critical
High-Pressure Fuel Pump Failure
The high-pressure fuel pump can fail, most often after water or poor fuel gets in, and spread metal through the injectors and lines.
Typical repair cost
$6,000 – $12,000
major
Diesel Emissions System Faults (DEF, DPF, NOx sensors)
The emissions hardware is the most common source of warning lights and limp mode, especially on trucks driven mostly on short trips.
Typical repair cost
$800 – $4,000
Which of these apply to your 6.7L Cummins diesel?
Your guide shows which apply to the exact car, and what to ask the seller.
Where it was used
Cars with the 6.7L Cummins diesel
Ram 25002010-2025
Ram 35002010-2025