Review on Denso 234 5033 Air Fuel Sensor by Justin Woolley

I drive a 2009 Mazda 6 with a 2.5L L4 engine and this fixed my check engine light which came with my previous upstream oxygen related sensor. be dead. This one was very good as it came with a factory wiring harness so all you had to do was anti-seize, screw in, route the wire and secure. After clearing the codes with my scanner and driving for a few minutes, the check engine light went out and my engine has been running without a code for a long time now. I can't recommend this enough if your top sensor is dying.