Removing (Main) Catalytic Converter

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2018 Porsche Cayenne, 2017 Porsche Cayenne, 2016 Porsche Cayenne, 2015 Porsche Cayenne, and 2014 Porsche Cayenne. However, it is still accessible from the selected car via links, so may be relevant.

CAUTION: Hot components

Risk of burns

→ Let hot components cool down.

→ Wear personal protective gear.

Information

Some of the repair illustrations show only one side of the vehicle .
Naturally, some steps also have to be performed on the opposite side of the vehicle as well .

Loosen fastening nuts -8- on the exhaust clamp (clamping sleeve) -3- between the catalytic converter and exhaust system. Slide exhaust clamp onto the exhaust system. The exhaust clamp must not be re-used.

Fig 1: Loosening Clamps
Courtesy of PORSCHE CARS NORTH AMERICA, INC.
Unscrew fastening screw -5- on bracket for transmission -4- .

Fig 2: Loosening Screws On Transmission Bracket
Courtesy of PORSCHE CARS NORTH AMERICA, INC.
Screw off three fastening nuts -2- on the connection between the main catalytic converter -1- and primary catalytic converter -6- . The fastening nuts must not be re-used.

Fig 3: Loosening Primary Catalytic Converter Nuts
Courtesy of PORSCHE CARS NORTH AMERICA, INC.
Remove main catalytic converter by pulling it forward.
Remove seal between main catalytic converter and primary catalytic converter. The seal must always be replaced.