Denso 234-4509 Heated 4-Wire Oxygen Sensor with 25.5” Harness for 2004-2016 Lexus/Toyota V6 Right-Bank Downstream

Part is a perfect fit for my 2008 Toyota Highlander (Gen 2). Fixed code P0037.Very quick to install if you follow the suggestions that others have provided. Sprayed the bad 02 sensor with PB Blaster a few hours before removal. Tried to remove but the sensor required a second shot of PB Blaster. About 45 minutes after the second shot I was able to remove with ease. Used a 22mm open wrench. Might have been able to use an adjustable wrench or lever-lock pliers. Wiring harness is 100% 'plug and play' - including the mounting clips. If you are at all handy, you can do this and save some money. Once the PB Blaster has done the work it is a 10 minute job. Cleared the codes using an OBDII dongle and app. Others have suggested the code will automatically reset, but that was not the case for my SUV.

This was a direct replacement for the oxygen sensor on my 2007 Lexus RX350, Canadian built SUV. Note that this part is for bank 1, sensor 2.The sensor is located under the vehicle, aft (downstream) of the cat converter, in the exhaust pipe, closest to the driver's side.Denso (brand) are the same folks that supply many of original Lexus factory parts for this vehicle. It is a perfect match, right down to the wire length and clip fastener spacing!Easy to replace! Once under the vehicle it takes 20 minutes, including the time for the spray rust penetrant (Pb Blaster) to make removal a breeze.Tools you will need:- Jack and jack stands, unless you are skinny! NEVER go under a vehicle supported by a jack alone!- 7/8 open-end wrench (Save your money and don't buy the special oxygen sensor tool. I bought it and didn't use it)- Flat blade screwdriver to pry out clips securing cable. (Cable comes with new clips, so don't worry)- Eye protection.- Wire cutter (Optional, but snipping the old wires close to the sensor makes removal more pleasant)- Spray rust penetrater in a can. (I like Pb Blaster)- Vehicle computer code reader/reset tool (I own one, but many of the auto part chain stores will reset free of any charge)Normal thread (righty, tight - lefty, loose). Snug-up, but don't be a gorilla. 35 foot pounds, if you really want to put a torque wrench to it. Make sure the car is at ambient temperature. This is important for easy removal.The dealership quoted $400-$500 for this repair. I did for under $100. If you can change yourtire, this is only slightly more difficult.No more check engine light or poor gas mileage. The part is working very well for me. I hope it does for you as well!

This was a perfect fit for Toyota Highlander Limited 2012 V6. I installed it, cleared the error code and till date no more check engine indication on the dashboard

Exact fit for 2004 lexus rx330. Fixed check engine light issues.

I ordered this sensor for my 2005 Toyota Highlander V6 AWD after having an auto parts store chain scan for an error code I was receiving (Check engine light and VSC both illuminated). I was getting code P0037 which indicated Bank 1, Sensor 2 on the passenger side after the catalytic converter. I also ordered a 22mm offset wrench and glad I did because it would have been extremely difficult removing the sensor without it. My car has 180,000 miles and this was the first time it was replaced. The sensor is the identical Original Equipment Manufacturer (OEM) that Toyota still uses on their vehicles; I stayed away from a cheaper, generic sensor. The hardest part is getting the sensor to "break free" since its been on the vehicle for over 11 years. I also sprayed it with liquid wrench a few times days before I attempted to remove it. I also drove home about an hour and removed it within about 10 minutes after shutting the car off so the exhaust pipe was still pretty hot ( wear long sleeve shirt). I didn't use a lift or ramps and it's not too hard to replace since the Highlander sits high and has enough clearance underneath. The check engine light and VSC light extinguished after starting the car the next day while leaving work after I had driven about 30 miles with the new sensor installed. I was getting ready to go back to the auto store on the way home if it didn't reset itself to have them clear the code or maybe order a code scanner, but it wasn't necessary. 5 stars on this part based on getting an OEM replacement at a great price and quick shipping. I hope this one will last another 180k miles. If anything, Amazon could improve the packaging since a bubble lined envelope does not appear to adequately protect a small, electrical and sensitive sensor part that should not be dropped or handled roughly.

The media could not be loaded. I noticed that after taking the 2004 Highlander 3.3l up to Fresno and to Orange County Ca. I got a (P0420) code, which is a generic code, I was thinking my bank 1 converter was bad, but then i realized my car wouldn't stall or bog out and shut off, so i suspected it COULD be something else, i pulled the exhaust pipes off to check my converter and with no signs of wear, i put it back on and looked at tons of info, with no direct lead on what could have triggered my ENGINE LIGHT, VSC, AND TRACK OFF LIGHTS. When puttibg back my exhaust i noticed my Bank1 S2 02 sensor was fouled and black with a streak of white, i cleaned it up with a wire brush not knowing these sensors are fragile and cant be touched or it could throw the reading off, i did get some what better readings but i noticed my OBD scanner live data showed that the sensor was below its normal standards and was reacting slow to me revving it to 2000 rpms. After a week of driving, my P0420 went away and then it was only a (P0037) code and after playing with sensor 2 on bank 1 convertor previously, i knew it was this and after replacing the sensor my Gas mileage went back up, car felt stronger and the codes and lights havent came back since. I Lyft in this car, so getting good gas mileage in Cali is a must and seeing how much a convertor is here is Horrendous, this was a cheap fix compared to thousands on something it didnt need, Look at this first if your having the same symptoms that i had, it will save you lots of headches