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Home >> Porsche >> 2003 >> 911 Carrera 4S, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 3 (Exhaust System/Emission Control) >> Removing and installing catalytic converter >> Install catalytic converter

Install catalytic converter

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NOTE:
  • Clean sealing surfaces
  • Replace fastening screws and nuts
  • Clamping sleeves and seals must be replaced. Pay attention to the installation position!
  1. Install metal seal over the studs of the catalytic converter flange. Push new double clamping sleeve onto catalytic converter exhaust pipe.
  2. Bring the catalytic converter to installation position and position threaded plate on rear muffler holder with 2 new hexagon-head nuts -2-  .
    Fig 1: Installing Threaded Plate And Tightening Hexagon Nuts
    G03139087Courtesy of PORSCHE OF NORTH AMERICA, INC.
  3. Replace metal seal of catalytic converter flange. Screw catalytic converter tightly with 2 M8 hexagon nuts and an M8 hexagon-head bolt.

    Tightening torque: 23 Nm (17 ftlb.) 

  4. Depending on version (USA or RoW), connect oxygen sensor plug if necessary.
  5. Bring the double clamping sleeve to installation position (screwed points upwards). The double clamp must adequately cover both the exhaust pipe and the connection to the catalytic converter to avoid leaks. Position the M8 nuts (a/f 13) and tighten -arrows-  .
    Fig 2: Tightening Converter Clamping Sleeve Nuts
    G03139088Courtesy of PORSCHE OF NORTH AMERICA, INC.

    Tightening torque: 23 Nm (17 ftlb.) 

  6. Tighten hexagon-head nuts of thread plate on rear muffler holder.

    Tightening torque: 23 Nm (17 ftlb.) 

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