Diesel Injector Fuel Injector 0445120255 Bosch for Dodge RAM 2500 Pickup Track 5.9 Cummins Turbo Diesel

Third Generation 5.9-liter engines utilized a Bosch-built CP3 injection pump, which over time has proven to be one of the most reliable and efficient fueling platforms. An electric lift pump sends diesel to the CP3 where it is pressurized and sent into the fuel rail. Once in the rail, fuel is distributed into each of the six fuel injectors. The revision allowed the engine to stay EGR-free for at least a few years.

The new fueling strategy included solenoid-activated injectors, an updated cylinder head, and a stronger 5.9-liter engine block. The injectors were 8-hole (2003-2004) and 5-hole (2004.5-2007) designs which, once again, helped with emissions. The new cylinder head featured a rocker box that accommodated the injectors and crossover tubes as well as heavier-duty intake and exhaust valves.

From 2003 to 2007, Cummins offered two different turbochargers for its 5.9-liter engine. A Holset HE341CW was used in 2003. It features a mechanically controlled internal wastegate that holds higher-than-stock boost pressures. However, to better comply with emissions regulations, the 2004.5 to 2007 engines came with Holset's HE351CW. This 'charger is similar to the HE341CW but the wastegate is electronically controlled. This new turbocharger allows for a noticeable boost in performance and lowered emissions output.