Denso234-9052 Air Fuel Ratio Sensor

OEM! Fantastic! Works Great!ESPECIALLY when it comes to Oxygen O2 sensor with heat core attached to it all as one, DO NOT buy other aftermarket junks!You’ll be happy buying this!

We purchased this O2 sensor for a 2008 corolla with engine code R as it was giving us a code of P0170 and the LT and FT were high. It fit perfectly. We tried using an o2 sensor socket without removing the heat shield. It was stuck in there well enough that it would not budge. In fact we partially rounded off the edges of the old sensor and had to remove the heat shield. The shield had 4 bolts and came out easily. The sensor still wouldn't budge. We decided to heat the manifold until it was red, let it cool slightly, then sprayed more PB blaster on the threads, and started rocking the sensor from clockwise to counterclockwise until it started to loosen up. Once removed I noticed the threads were not great within the manifold. We used a thread chaser with lots of antisieze. The new sensor went in easily and we cleared the code. Time will tell how long the new sensor will last.

Worked as it should. Happy with purchase.

OEM Toyota Matrix

This O2 sensor, was a perfect fit and it arrived timely.When I installed the new sensor check engine light on dashboard vanished. I'm excited

The product was well packaged and worth the money.

Corolla was throwing a P0171 code after 240k miles. I've been meticulously maintaining this vehicle myself so after some research I learned it's a bad idea to go cheap with an aftermarket sensor. And I usually replace with OEM so I decided to go ahead and pay for this Denso. It's a perfect replacement, comes with anti-seize already applied to the threads and a plastic cover to ensure the anti-seize didn't leak onto the sensor stem (which would be bad). The connector plugged right in, sensor threaded in just fine. Cleared the code and now waiting to see if the code stays cleared. I'm also replacing the lower bank O2 sensor so they're replaced as a pair (not required but not a bad idea either).

This was a perfect fit and direct replacement. It was an oem part. I replaced this on a 2008 Toyota Corolla S. On this particular vehicle this sits too close to the firewall to use a sensor socket so save your money. Take the heat shield off, unhook the sensor, and use a long 22mm combination wrench (boxed end). Pro tip here ,I didn’t have a 22mm and no where local had one in stock. 7/8’s wrench was close enough to get the job done without doing any damage. And man was the old one ignorant coming out.

Tuve que sustituir el sensor de mi vehículo, por un problema de consumo de gasolina y además de que apareció una falla en este.En mi caso, los componentes del vehículo son denso de fábrica.Si mejoro el consumo de combustible pero es necesario cambiar los dos sensores de oxígeno. Me falta cambiar el otro sensor de oxígeno.Se ve que es original. No tuve problemas para cambiarlo.

Do yourself a favour, if you have a Toyota just buy the Denso and skip the cheap knockoffs. This bad boy works. Period. Feel free to thank me later.

Fits perfectRecomande

From my understanding this Denso O2 Sensor is the equivalent of an OEM one that originally came on your Toyota. Sensor came in original Denso packaging, sealed, with compound. I had my mechanic install this while getting some other work done. I was advised that it was a perfect fit with no issues. I have not had my engine light return since installing the new O2 sensor.

THe sensor works, but my problem persiste