My car rav4 base 4wd 2008.I did have check engine light. VSC and 4WD. Had a code reader (bluedriver) which told me the issue. Bank 1 sensor 1 stuck lean.I tried 2 sensors from ebay and none of them worked. They would misfire and even after resetting the ECU, the check engine light came back Despite having a new sensor installed.Googled a lot and found that Denso makes genuine oxygen sensors for toyota assembled in US and not china. This is important trust me. Chinese stuff usually work but not car parts spaciallly sensors!Found the Denso here and the price was fair. Tried it on my car and had no issues so far. This part is the same being sold by dealership for about 200$. Same thing. Up to you if you want to spend 80$ more and wait for them to order it for you in a week or two or simply order here cheaper and get it in 2-4 days with prime delivery.Great seller. Great product. Super happy with it. Thanks for selling these quality products.