Removal And Installation: Notes

Remove the front muffler (B) after disconnecting the oxygen sensor connector (A).
Tightening torque:

39.2 ~ 58.8 N.m (4.0 ~ 6.0 kgf.m, 28.9 ~ 43.4 lb-ft)

Fig 1: Oxygen Sensor Connector
Courtesy of KIA MOTORS AMERICA, INC.

Fig 2: Front Muffler
Courtesy of KIA MOTORS AMERICA, INC.
Remove the catalytic converter & center muffler assembly (A) after disconnecting the oxygen sensor connector (A).
Tightening torque:

39.2 ~ 58.8 N.m (4.0 ~ 6.0 kgf.m, 28.9 ~ 43.4 lb-ft)

Fig 3: Downstream Oxygen Sensor Connector
Courtesy of KIA MOTORS AMERICA, INC.

Fig 4: Center Muffler And Catalytic Converter Assembly
Courtesy of KIA MOTORS AMERICA, INC.
Remove the main muffler (A).
Tightening torque:

39.2 ~ 58.8 N.m (4.0 ~ 6.0 kgf.m, 28.9 ~ 43.4 lb-ft)

Fig 5: Main Muffler
Courtesy of KIA MOTORS AMERICA, INC.
Installation is the reverse order of removal.
NOTE: When installing, replace with new gaskets.