NEW 90° O2 Sensor Spacer Mini Catalizador Mini Catalytic Converter to Fix CEL P0420 P0430

That thing actually fixed it!

My check engine light had been on for months. I replaced the catalytic converter and both oxygen sensors, but nothing worked and the light stayed on. After installing this part and driving about 250 km, the check engine light finally turned off on its own. Huge relief. It really works.

Worked on a 99 miata. A bit of tweaking to get it to fit. But the CEL has not come back on after clearing.

Originally my orders was lost in the mail by usps. Luckily these guys replaced it quickly. Great customer service