Cummins produced its two millionth diesel engine for Ram trucks, the latest milestone in a partnership that spans four decades.

The 6.7 liter turbo-diesel engine , rated at 800 lb-ft of torque and 350 horsepower, is, like all Cummins diesels supplied to Dodge and Ram over the years, an in-line six-cylinder. Distinguished by a “Cummins Red” rocker cover and breather, the historic engine, feted today at a Cummins plant in Indiana, will tour the country.

Fred Diaz, Ram CEO, said, “Both companies have benefited greatly, but Ram diesel customers are the real beneficiaries. Every day they experience the toughness and capability a Cummins-powered Ram can deliver.”

Cummins began supplying engines to Chrysler Corporation in 1988. Today in North America, only Ram-brand pickups and chassis cabs feature the coveted Cummins “C” logo, though Nissan has started using lighter-duty Cummins V-diesels in their commercial vans.

“I am immensely proud of our association with Cummins,” says Bob Lee, Chrysler Group Vice President and Head of Engine and Electrified Propulsion Engineering. “And I have no qualms matching our truck diesels against those of any competitor for performance and durability.”

For 2013, Cummins-powered Rams boast capabilities and features that include:
  • Best-in-class torque and a 10 percent fuel-economy improvement
  • Dual-inlet “Ram Active Air” that adjusts induction according to driving conditions
  • “Smart” exhaust brake
  • Best-in-class 15,000-mile oil-change interval
  • B20 (20% biodiesel) capability
  • Selective Catalytic Reduction (SCR) with up to 4,000 miles between exhaust fluid refills
  • Dual fuel filtration for enhanced reliability in virtually every climate and environment
  • Unsurpassed powertrain warranty – 5 years/100,000 miles

The Chrysler-Cummins partnership traces its beginnings to 1985, when development work began on a 5.9-liter 12-valve in-line 6-cylinder turbo diesel. When it launched in 1989, it was rated at 160 horsepower and 400 lb.-ft. of peak torque – less than half the numbers for today’s High-Output 6.7-liter Cummins turbo diesel. In the 2013 Ram Heavy Duty pickups, the top-line Cummins engine makes 385 horsepower and a best-in-class 850 lb. ft. of torque.

Cummins diesels account for nearly 80% of Ram Heavy Duty sales; many buyers have claimed to “buy a Cummins diesel wrapped up in a Dodge truck.”