Catalyst Location
WARNING: This page is about a different car, the 2025 Lexus RX 450h+, 2025 Lexus RX 350h, 2024 Lexus RX 450h+, 2024 Lexus RX 350h, and 2023 Lexus RX 350h. However, it is still accessible from the selected car via links, so may be relevant.
for THS-HEV Model
| *1 | Air Fuel Ratio Sensor (Sensor 1) | *2 | Air Fuel Ratio Sensor (Sensor 2) |
| *3 | Exhaust Manifold | *4 | Front Exhaust Pipe Assembly |
| *5 | TWC: Front Catalyst | *6 | TWC: Rear Catalyst |
for PHEV Model
| *1 | Air Fuel Ratio Sensor (Sensor 1) | *2 | Air Fuel Ratio Sensor (Sensor 2) |
| *3 | Exhaust Manifold | *4 | Front Exhaust Pipe Assembly |
| *5 | TWC: Front Catalyst | *6 | TWC: Rear Catalyst |
NOTE:
When replacing the exhaust manifold [*3] and the front exhaust pipe assembly [*4] 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].