6.7L Cummins Turbo Diesel for Underground Mining


6.7L Cummins Turbo Diesel for Underground MiningEvery underground mine site needs a big truck with big pulling power. And that's exactly what you get with every Ram Heavy Duty pickup equipped with a specially calibrated Cummins 175-hp Turbo Diesel. These trucks out-perform every other pickup at the mine site with their combination of low emission engine, maneuverability in tight, confined spaces and high payload.

No wonder it's the number one choice of underground coal mine operators in the U.S.

Our new 175-hp Turbo Diesel rating delivers unsurpassed performance and reliability with increased braking capacity, easy maintenance and a 5-year/100,000-mile (160,935 km) warranty. Best of all, it's the only pickup truck engine certified by MSHA for use in coal and metal/non-metal mining for all 50 states. By offering an emission reduction, the 175-hp Cummins will enable mine operators to reduce their annual expenditure on mine ventilation by $16,000 to $18,000 per year for each Ram vehicle in their fleet.

The Underground Ram equipped with the Cummins Turbo Diesel is also available to mine operators in Canada.

If you're already a Dodge Ram Turbo Diesel owner, there's a magazine written just for you: the Turbo Diesel Register. And be sure to sign up for our Turbo Diesel Newsletter to get the latest information about your engine online. Also, check out the Cummins PowerStore for Cummins apparel and merchandise.


Everyone wants higher performance, and the Cummins 175-hp Turbo Diesel delivers. The Cummins 5.9-liter Turbo Diesel develops peak torque at a very low 1000 rpm, ideally suited to underground driving conditions and speeds. This low-end torque provides better performance for high payloads and trailer towing along with better acceleration, throttle response and driveability. The vehicle is exclusively engineered to limit speed to 25 mph with an optional 40 mph calibration when mine speeds dictate the need.*

Every Cummins 175-hp engine gives you increased performance:

  • Enhanced High Pressure Common Rail fuel system, including large multiple injections for quieter combustion.
  • Exhaust system increased to four-inch diameter from turbo to tailpipe to reduce backpressure.
  • Higher flow design intercooler and engine-mount shroud for improved forced airflow and cooling.
  • Longer oil change intervals so you can go twice as long, reducing the cost of ownership.
* vehicle cannot be operated on public roads

Engine Finder Specifications

Power 175 hp / 130 kW
Torque 317 lb-ft / 430 N•m


Engine Model Advertised hp Peak Torquelb-ft Governed Speed
Cummins Turbo Diesel 175 175 317 @ 1000 2900

Rating applicable for all underground mining altitudes.


Every Cummins 175-hp Turbo Diesel is designed for simple, easy maintenance. A single top-load fuel filter with heater and water-in-fuel sensor has 7,500-mile (12,000 km) change intervals which match the oil and oil filter change schedule required for the tough environmental conditions of underground mines. You have the option of using either CI-4 or CH-4 engine oils at the standard intervals.

For complete maintenance information, please consult your Owner's Manual or Operations and Maintenance Manual.