Car Oxygen Sensor Adapter Spacer Adapter Bung Catalytic Converter Fix

1. This product fix actually has a miniature catalytic converter built inside and will help get rid of that annoying check engine light you get after modifying your exhaust or removing your catalytic converter, and sometimes even when installing a high flow catalytic converter. 2. Material: Metal 3. Thread: M18 X 1.5 4. Size: 5.8 x 1.6cm 5. Note: it does not come with sensor.