Denso 234-4168 Downstream Oxygen Sensor with 4-Wire 13.7” Harness

fit perfectly, the cable was a little thinner then the OEM, I assume it was upgraded technology in the heat resistance material, or at least I hope so!! I've been told DENSO is the maker of OEM Toyota o2 sensors, so I had no issues purchasing this one. so far it has worked like a charm! it was a lot cheaper then OEM, Amazon Prime shipped it free so it was totally worth the chance. It was difficult to get my 15 year old factory o2 sensor out but once I did this one went right into place and connected right into the factory wire connector. My check engine light went off for the first time in 4 years.

I had the check engine light pop up on my 2006 Toyota Sienna. My OBDII meter indicated a weak catalytic converter which can actually mean a malfunctioning O2 sensor. Sensors are a lot less expense than catalytic converters so I elected to replace them first. The dealer wanted way too much for the OEM sensors so trying to save money; I bought a complete set of no brand sensors from turbosisland in California online off EBay. They were guaranteed to fit my van. None of the no-brand sensors worked. The whole effort was a waste of my time and money. I then ordered OEM sensors from Amazon.com services. They are OEM parts so they were still a little pricey but they were priced much lower than the dealer or any of the auto parts stores near me. They arrived quickly and were an exact match for my original sensors. They even came packaged with a small tube of antiseize compound. Before starting the removal of the O2 sensors, as a safety precaution, I disconnected the van battery. Removing the old parts was a bit of a pain as the electrical connector clips on the old parts were hard to get apart. To make unscrewing the sensors easier, I sprayed them with penetrating oil the day before and ten minutes before trying to unscrew them. After I disconnected the stubborn wire connectors, I used the tool made for removing O2 sensors and easily broke them loose and finished unscrewing them with my fingers. Reinstalling the new sensors is fast and easier than removing them because the electrical connections snap easily back together. After installation of the sensors, my van’s engine is running smooth again, my gas mileage has returned, and the check engine light has not come back on. In the future, I now know to stick to OEM electrical parts for my vehicles and to buy them from reliable vendors on Amazon.

I have been trying couple aftermarket sensors they not solve the problems but this OEM is working right away the check engine light is gone after resetting. No more stress

Item was as described. Arrived on time. Fixed my problem. Would recommend!

Great product. Works as advertised.

The length of the sensor is just a few millimeters longer than the factory sensor, so that when I went to remove the socket it hit the exhaust. I had to use a box wrench instead to torque this down, which was next to impossible due to the lack of room to work. While this isn't the fault of the sensor I think it's relevant to others who may run into this. The vehicle was a 2011 Toyota Sienna.

Fits 2005 Toyota Sienna XLE and got rid of the damn p0430 code which points to bad catalytic converter....but glad I changed this before replacing the CC which is big $$$. Spray some PB blaster on the old sensor to help "soften" it up before removing. I didn't even need to jack up the van to change it out as it was right below and behind the firewall. I did have problems unclipping the wiring harness though, but take your time and it will come off. All in all a good buy and saved me $$$ by DIY.

This worked perfectly for my Toyota Highlander bank 2 sensor 2 at the front of the car/bottom of the manifold. Included antiseize. Literally half the price the auto part store was charging for the identical part. Denso Seems to be the way to go for Toyota. Installed easily, clearers existong code and so far it has yet to come back. A huge win and likely saved me $150-200 to DIY.

Had this dealer installed and it has worked flawlessly since then. Much cheaper price than what the dealer would have wanted and OEM specified.

Me llegó antes de lo acordado y en buenas condiciones y buena calidad

Replaces Bank 2 Sensor2 Sienna 2nd Generation good fit without difficulty Package delivered to mailbox was expecting front door delivery. Bit of a worry since the 1st sensor ordered went missing Vendor customer service agent offered & sent a replacement with no hassle. Prefer to pay a bit more for Denso parts great reputation quality and excellent customer service.

I was relieved once the old O2 sensor came out easily using a monkey wrench. This new sensor is showing a perfect waveform on my real-time scanner. I reset my check engine light code P0420 and I will wait a week or two to see if this error code stays off. If this works, then the need to change the expensive cat based on this error code will be eliminated. I also replaced the flex-pipe with a new one from Amazon and that also put an end to the leaks that were occurring a few inches upstream from this sensor. I could have ordered a generic sensor at nearly half the price but I decided that getting a Denso was worth the price for having peace of mind knowing that I have an OEM replacement part.

The product is exactly what I needed was installed in about 10 minutes and works perfect.