The SCR reduces NOx in the exhaust. To do this the SCR system uses a ceramic catalyst that has been coated with copper and iron,…

The DOC is a ceramic catalytic converter which oxidizes hydrocarbons in the exhaust and generates heat for the SCR and DPF to function properly.

The turbocharger down pipe is double- walled to help retain heat for the after treatment system. It connects to the turbocharger with a V-band clamp…

Exhaust gases exit the exhaust ports into the inboard exhaust manifolds and are directed to the dual turbine inlet of the turbo through the right…

The PCM provides a duty cycle to the solenoid which changes the vacuum flow to the actuator causing the wastegate to open and allow exhaust…

The cooling fan is mounted on the front of the engine and is controlled by the PCM.

The TCM is mounted under the vehicle, on the driver side outside the frame rail. The TCM controls the operation of the transmission.

The GPCM is mounted under the right side battery box. The PCM commands the GPCM to power the individual glow plugs, which the GPCM does…

The reductant dosing module is mounted next to EGT12 sensor. The reductant dosing module is the part that injects the Diesel Exhaust Fluid (DEF) into…

The fuel pump relay is located in the Battery Junction Box (BJB). The PCM controls when the relay is on and off.