BOSCH 11027 Premium Universal Fitment 1-Wire Oxygen Sensor - Single

This was an exact replacement for the upstream oxygen sensor on my 1999 Camry LE V6. Bosch's website says they invented the oxygen sensor in 1976, and this was a DIRECT replacement for the original one on the car, which lasted 174K miles. A friend was able to verify for me that it was the sensor, NOT wiring to it, that had failed. The replacement took about 5 minutes (hardest part was, as always, locating the part on the vehicle) with simple hand tools. An special 7/8" slotted socket, built to work with a 3/8" drive rachet handle, helped tremendously in a cramped space. The Bosch part had "OE Type Fitment," meaning the connector was identical to the one Toyota installed when the car was manufactured; that actually allowed the old part to be removed from its wiring harness WITHOUT using the slot in the special socket (through which you can pass the wires), so the old one could have been removed with an ordinary closed 7/8" socket. Bosch made the wires reinforced for strain relief at the sensor end and also made the whole "pigtail" about 2" longer than the original one, which was of tremendous help and convenience in replacing it in tight quarters in the vehicle. AFTER INSTALLING THE NEW PART, you WILL need to connect an OBDII tool and "erase" the error message in the car's computer that is held from the old, failed sensor; THEN you can turn the car off and back on again. Check engine light does NOT come back on, because the new sensor functions perfectly. VERY SATISFIED WITH THIS PART AND ITS QUALITY. You can replace this yourself FAR cheaper than taking it to a dealer or repair shop. Now the mixture is correct and the car doesn't smell of burning too rich, and I no longer waste gas or pollute. Well worth the time and money! (NOTE THAT YOU WILL WANT TO DO ALL THIS WITH THE ENGINE STONE COLD, as in the next morning.)

This came on time. Right part.

Worked great. had the anti seize on the threads, and plastic wire holder / spacer. plug fit. Didn't want to take a chance on cheaper. A five minute diy if you buy the slotted socket set and don't have major rust or access problems.

Received as described Worked well Easy installation

Replacement for suspected defective sensor

Fitment was perfect, although it was a bit confused as it looked different to the poem denso sensor I was replacing, but it has been running great in addition to my new catalytic converter to rid the engine light. Installation was easy as cake, just make sure not to connect it until after snuggling it down. Great value for money as it was a significant price saving compared to denso. Engine light has stayed off since Installation, time will tell for the durability.

Firstly I've used Bosch for a couple of decades on many makes and models and never had an issue, so the reviews were not that important to me for this purchase. The order was received quickly, the price was very competitive so I went to work swapping them out on my just tuned up (plugs, wires, coils, filters) 2011 Silverado 2500HD 6.0 truck which was running way better after the tune up, so the O2s were just to be the cherry on top of getting the most out of my 6.0. Got them in, and all seemed fine until about a 1/4-1/2 mile down the road when all I can assume the circuit went open loop and started looking at the O2s to help with the fuels air mixture and all hell broke loose. Kicking and bucking, popping in the exhaust, "Service Stabilitrak and Traction Control" errors and lights, then the CEL came on and it was all I could do to limp it back home. Next day I took it all apart again to make sure all was well, and nothing was off. So that's where the research kicked in as in my mind it still can't be the Bosch O2 sensors. Went to Bosch's site to make sure these were indeed the correct ones for the truck to make sur the Amazon "This fits your vehicle" piece was in check, and this is the part number from Bosch's site for my truck so that was out. Looked some more and found several reviews of similar issues on this item on Amazon alone from PGR in 2018, Adam Blaszyk in April 2021, Kellywaw 4/2019 & (one of my favorites) Monk E. Rench from 11/2017 all with similar immediate issues. Looked further online and found several more reports of these sensors doing all kinds of erratic things. Still not convinced I bought a scan tool that could show live data, and that clenched it. Both sensors read a pegged voltage and never fluctuated one bit open or closed loop, so that sealed it for me. Finally tracked down some Denso ones at a local parts house, got them and put them in and immediately the truck came alive again and the DTC codes reset and the live data showed constant reading fluctuations as you expect. Very disheartening to have such a trusted brand for decades fail so spectacularly in this particular application anyway. Will be trying to return to Amazon as failed products, but I'd advise anyone considering these to thing very hard about it and be very ready to source an alternate if you have similar issues as myself and others on Amazon and other locations alike.

Great price and quality. Perfect replacement

Pretty decent product. Super easy install

Was ok for a while then same code came back ...

Cumple con la descripción del producto.

Worked as intended, great value for the money. Connected directly to my Disco 2.

PosiLockコネクターは使い回せました。 最近、コネクター無しの商品が安く出ているので コネクター付きを一つ買えば、将来、安くて楽に 交換できるようになります。 ちなみに1年で壊れました。 HCR32で使用。