| *1 | Air Fuel Ratio Sensor | *2 | Front Exhaust Gas Temperature Sensor (Exhaust Gas Temperature Sensor) |
| *3 | Rear Exhaust Gas Temperature Sensor (No. 2 Exhaust Gas Temperature Sensor) | *4 | Differential Pressure Sensor (Differential Pressure Sensor Assembly) |
| *5 | Oxidation Catalytic Converter | *6 | DPF Catalytic Converter |
| *7 | EGR Cooler (EGR w/Cooler Pipe Assembly) | *8 | EGR Cooler Bypass Switching Valve (No. 2 EGR Valve Assembly) |
| *9 | EGR Valve (Electric EGR Control Valve Assembly) | *10 | VSV (For EGR Cooler Bypass Switching Valve) |