Heat Shields On Exhaust System, Heat Protection

Installation overview of heat shield on catalytic converter: 

Fig 1: Heat Shield On Catalytic Converter Components Location

Courtesy of PORSCHE CARS NORTH AMERICA, INC.

1. Collar nut, M6 > Tightening torque 8 Nm (6 ftlb.) 
2. Countersunk screw, M6 > Tightening torque 10 Nm (7.5 ftlb.) 
3. Screw, M6 > Tightening torque 10 Nm (7.5 ftlb.) 
4. Heat shield for catalytic converter

Courtesy of PORSCHE CARS NORTH AMERICA, INC.

3 Nuts > Tightening torque 8 Nm (6 ftlb.)