EXHAUST PIPE AND MAIN MUFFLER <4M4>

<Vehicles without diesel particulate filter (DPF)>

<Vehicles with DPF-M/T>

<Vehicles with DPF-A/T>

• DPF system has been adopted to reduce particulate matter (PM) significantly (For details on DPF system, refer to GROUP 17 - DPF system .) <some models>
  
• For the centre exhaust pipe, an acoustic pre-muffler is installed to reduce high frequency noise. <Short wheelbase (vehicle without DPF)>
  
• The large muffler is installed to secure high-output of an engine and reduce exhaust noise.
  
• For the exhaust tail pipe, an resonance pre-muffler is installed to reduce low frequency booming noise. <Long wheelbase>
  
• The connection between the front catalytic converter and front exhaust pipe has a low friction type spring joint structure, to reduce vibration of the exhaust pipe. <vehicles without DPF-M/T (Vehicles complying with emission level Europe-step III)>
  
• The connection between the front catalytic converter and rear catalytic converter has a low friction type spring joint structure, to reduce vibration of the exhaust pipe. <vehicles without DPF-M/T (Vehicles complying with emission level Europe-step IV) and vehicles with DPF-M/T>
  
• The connection between the front exhaust pipe and rear catalytic converter has a low friction type spring joint structure, to reduce vibration of the exhaust pipe. <vehicles with DPF-A/T>
  

CONSTRUCTION DIAGRAM