CMI vs MPC Comparison

Cummins is the top manufacturer of diesel engines used in commercial trucks, off-highway machinery, and railroad locomotives, in addition to standby and prime power generators. The company also sells powertrain components, which include transmissions, turbochargers, aftertreatment systems, and fuel systems. Cummins is in the unique position of competing with its primary customers, heavy-duty truck manufacturers, who make and aggressively market their own engines. Despite robust competition across all its segments and increasing government regulation of carbon emissions, Cummins has maintained its leadership position in the industry.

Marathon Petroleum is an independent refiner with 13 refineries in the midcontinent, West Coast, and Gulf Coast of the United States with total throughput capacity of 3.0 million barrels per day. Its Dickinson, North Dakota, facility produces 184 million gallons a year of renewable diesel. Its Martinez, California, facility will have the ability to produce 730 million gallons a year of renewable diesel once converted. The firm also owns and operates midstream assets primarily through its listed master limited partnership, MPLX.