Catalyst Location
WARNING: This page is about a different car, the 2025 Toyota Highlander, 2024 Toyota Highlander, and 2023 Toyota Highlander. However, it is still accessible from the selected car via links, so may be relevant.
| *1 | Air Fuel Ratio Sensor (Sensor 1) | *2 | Air Fuel Ratio Sensor (Sensor 2) |
| *3 | Converter with Catalyst Assembly | *4 | Front Exhaust Pipe Assembly |
| *5 | Tail Exhaust Pipe Assembly | *6 | TWC: Front Catalyst |
| *7 | TWC: Rear Catalyst | - | - |
NOTE:
When replacing the converter with catalyst assembly (*3) in order to replace the three-way catalytic converter, it is not necessary to replace the air fuel ratio sensor (sensor 1) (*1) and the air fuel ratio sensor (sensor 2) (*2).