Review on Denso 234 9040 Fuel Ratio Sensor by Gregory Plump

It worked as expected but the first Kwiksen test I tried didn't work. Same part number link but this is the OEM version and the Kwiksen is the aftermarket variant. Kwiksen was half the price, but in the end it doesn't matter how cheap it is if it doesn't work. This Denso sensor is quite expensive for an O2 sensor but it works so I guess you get what you pay for. Installing it on a 2003 Honda Accord LX 2.4L was pretty easy (assuming you can pull out your old one - worked fine for me). This includes anti-seize compound on the threads as well as a separate small tube - not sure why both but it's still good. Too expensive for what it is, otherwise it would have been 5 stars.