Land Rover Range Rover Sport 3.0/5.0 Rear Oxygen Sensor CPLA-9G444-HA / LR035748

When your Land Rover Range Rover Sport (3.0L or 5.0L engines) exhibits check engine light, abnormal fuel consumption, rough idle or weak acceleration, the post-cat oxygen sensor is likely aged or failed. This sensor monitors exhaust oxygen content and feeds ECU to precisely adjust the air–fuel ratio for efficient combustion and emissions control. OEM numbers CPLA-9G444-HA / LR035748; replacement fits Range Rover Sport and related platforms. Install with engine cold; avoid heat exposure to the sensor harness; tighten with a dedicated socket to specified torque to prevent loosening or thread damage.