Denso Oxygen (O2) Sensor - 234-4162 (Fits Select Years of Toyota: 4Runner, Pickup, Sequoia, T100, Tacoma, and Tundra Vehicles)

I spent months trying to figure out why I had a P0135 code and CEL. This is the 3rd O2 sensor I've purchased. The first two were knockoff foreign brands. They were garbage. This denso fixed it immediately. Highly recommend. Half the price of other OEM sensors. Error code gone. Easy, inexpensive fix.

Edit 11/20/23: MAF still working nicely. Yes on the Hitachi and yes on the Denso O2 Sensors. Dew it Grasshopper!!! Had cleaned the original MAF Sensor a few times over the years, but still couldn’t remove the small amount of black carbon on a few of the delicate inner sections. Stealership wanted $175 for new one. Sourced the manufacturer to Hitachi by looking at the snap on cover of the original MAF on the engine. Sourced it back to this store along with New Denso o2 Sensors. Ordered and installed the MAF 6 months ago along with 4 New Denso o2 Sensors. Engine is much torquier! MPG is slightly better now due to the combination of MAF and o2 newness. Tested the old MAF per Toyota FSM Spec and it was out of spec. Same with the old o2’s. After almost 20 years guess it was time? Truck was purring nicely before swap (even being out of spec), but man that awesome torque has come back that I remember when she was new. Engine is even smoother now. The 4.7L rules. Side notes: Looks like Hitachi grinds off the Toyota stamping for branding issues. Sensor doesn’t look used/remanufactured as stated in another comment above. Looks like the exact part as the original. No worries because the original cap pops off and snaps over the New Sensor. Also the cost is $55 vs $170. Made in USA! Denso is Made in USA quality. Comes with Copper Anti-Seize. Suggest buying Lisle Thread Chaser to clean up the threads on the front o2 sensors. Also, a sensor socket is good to have for swapping out the fronts. May want to purchase some new nuts (4) for the rear sensors as the old ones are most likely rusted/deteriorated. If one of your o2’s is bad, suggest replacing all 4 at the same time and be done with it. Restore that sweet torque.

Fit as intended, the connector was correct, and came with the gasket. Fixed a check engine light on a 1995 T100.

This O2 sensor does as it should. Check engine light tuned off and have been running it for about 1k miles thus far.

Oem Denso part yes. But it'd be great if it came with the gasket. Just a heads up.

Received the item via regular shipping in 3 business days and in excellent conditon. My Tacoma has 4wd and standard 5 speed transmission. The Denso oxgen sensor was a perfect fit. My pocket scanner had been showing an engine malfunction code of P0125. Initially, for several months, the engine malfuction light would come on, my scanner would show this code, and I would erase the code with the scanner which caused the light to go out. The engine light would not come on again until 50-100 miles later. Recently, the light started coming on after the engine temperature gauge warmed up to normal operating temp. I think the sensor was telling me that it was completely shot. Some website posts were suggesting a bad thermostat for causing the problem. But, the new 234-4162 Denso oxygen sensor immediately fixed the malfunction. My truck, as do most, has two oxygen sensors (one in front of catalytic converter and the other behind it). I replaced the front (upstream) sensor which is closest to the engine and the one most likely to go bad. The sensor comes with a top quality gasket but no nuts. I purchased two stainless steel nuts to replace the two that were rusted. The total cost for the sensor was $74.21 which includes taxes and shipping. Autozone was asking $105 plus tax.

These are genuine Denso O2 sensors and were sealed and packaged in new packaging from manufacturer. My equipment mistakenly showed an issue, however upon further investigation these O2 sensors were new and genuine Denso O2 sensors and I would buy them again.

Hey, this is an awesome product. This is the real deal. I am super super satisfied. I drove about 30 minutes with my new oxygen sensor and guess what my catalytic converter on my O2 sensor said it was ready. Hallelujah the previous owner of my car put the wrong upstream sensor. I received the package today switch the part out went on my 30 minute drive cycle And boom cat ready. Thank you so much for this product. I love you.

Direct replacement for front o2 sensor, put out the the cryptic P0125 code and drasticly improved fuel milage. No filing out holes, no stretching of harness. Fits like OEM

No hay nada que agregar los sensores Denso son los mejores que he utilizado en mi Tacoma en cuanto hice el reemplazo se noto la diferencia. Los recomiendo ampliamente no se arrepentirán.

I have a 1998 Toyota 4Runner and this Denso unit fit perfect including the wiring connector. So far, so good. Its working. Easy to install.

Original denso 100% lo recomiendo y en lo personal lo compre a un super precio

Nice to be able to use OEM quality parts at a reasonable price that fits the requirements. Also Denso delivered promptly and the customer Help department was top notch, nice to deal with knowledgeable and friendly people. I highly recommend this supplier.