Bosch model P7100 inline-style injection pump - The '94-'98 Cummins 5.9L engine has been the mainstay of diesel power in Dodge trucks, and has a reputation as an excellent performer with the ability to make some serious horsepower. One of this engine's features that makes it so desirable is the Bosch P7100 inline mechanical injection pump. This injection pump, often called a P-pump, is the Holley Four-barrel carburetor of the diesel world. The P7100 pump has been around forever, is practically bulletproof, and is very tunable for high performance. There have been several versions of the 5.9 L ISB featured in the Dodge Ram. The BT 5.9 was first introduced to Dodge Rams in 1989. The Cummins engine in 1991.5 got an intercooler. In 1994, the engine changed over to a Bosch model P7100 inline-style injection pump from the previous Bosch VE series rotary pump. One unusual feature of the ISB is that it is a multi-valve pushrod engine design. The engine displaces 359 cubic inches (5883 cc) with a 4.02-inch (102.1 mm) bore and 4.72-inch (119.9 mm) stroke. A turbocharger output in the high-compression (17.2:1 in recent versions) Diesel. It is an all-iron engine with forged steel connecting rods, an assembled camshaft, and a cast aluminum intake manifold. The engine is produced in Columbus, Indiana. There have been several versions of the 5.9 L ISB featured in the Dodge Ram. The BT 5.9 was first introduced to Dodge Rams in 1989. The Cummins engine in 1991.5 got an intercooler. In 1994, the engine changed over to a Bosch model P7100 inline-style injection pump from the previous Bosch VE series rotary pump.