2003 Dodge Cummins Specifications

• Since 1989, Dodge has been using Cummins as its diesel engine provider. It has gone through many changes through the years. In 2003, the Cummins diesel was offered in two versions: the California (CA) and High-Output (HO). The California model was restricted for the stricter emissions in that state, and the output numbers are lower as a result. In 2003, the Cummins diesel was installed in two vehicles: the Ram 2500 and Ram 3500.

Horsepower

• The CA model of the 2003 Cummins diesel produced 250 horsepower at 2,900 rpm. The HO version was significantly higher, producing 305 horsepower at 2,900 rpm.

Torque

• The torque rating is the engine's twisting strength, which directly affects the vehicle's initial acceleration when carrying a heavy load. The CA version of the 2003 Cummins diesel produced 460 pound-feet of torque at 1,400 rpm. The HO version produced 555 pound-feet of torque at 1,400 rpm.

Configuration

• The 2003 Cummins diesel was a 24-valve (24V) engine, which means it had three valves per cylinder and was an overhead-cam (OHV) engine. This engine was an inline six-cylinder (I6) configuration.

Internals

• The 2003 Cummins diesel had a bore (cylinder width) of 4.02 inches and a stroke (distance the piston travels inside the cylinder) of 4.72 inches. The bore, stroke and cylinder count are combined to create the total displacement of 5.9 liters. The compression ratio for this engine was 17.2:1.