Universal 200-cell metallic catalytic converter — TA Technix

The small component without which an exhaust system cannot be completed: flanges, sleeves, spare parts, and above all oxygen sensor adapters.

When a catalytic converter is removed, the downstream sensor no longer detects what it expects and the engine warning light comes on. An adapter places the sensor in a bypass, away from the flow: the fault often disappears without modifying the electronics. It treats the symptom, not the mapping - and it does not make the car road legal.