Removing Exhaust Manifold

Information 

• Pre-treat corroded components with anti-rust agent or heat. 

NOTIFICATION 

Incorrect handling of oxygen sensors 

• Damage to oxygen sensors 
• Different exhaust emission behavior 
  • → Do not remove the plastic cap on the thread until just prior to fitting.
  • → Protect oxygen sensors from impact of any kind.
  • → Do not kink or twist the cables when screwing in the sensors.
  • → Do not re-use dirty or damaged components.

1. Loosen oxygen sensors upstream of catalytic converter at the left and right.

   > 246919 REMOVING AND INSTALLING OXYGEN SENSOR UPSTREAM OF CATALYTIC CONVERTER

   1. 1.1 Unclip both cables from the holders.
   2. 1.2 Unscrew oxygen sensors.
2. Unscrew nuts -1  - and studs -2  - on the exhaust manifold/turbocharger flange -3  -.

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.

   Information 

   • An internal serration screw is installed at this position on some vehicles. 
   • Loosen screw with a chisel and unscrew it. 
   • Replace it with a hexagon-head bolt (M8 x 28) with the Part No. 900.378.121.00. 
3. Loosen exhaust manifold flange holder.
   1. 3.1 Loosen and unscrew screw -1  -.

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.

4. Remove exhaust manifold -1  -.
   1. 4.1 Unscrew screws -2  - securing exhaust manifold to cylinder head.
   2. 4.2 Remove exhaust manifold -1  - by pulling it downwards.

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.