Chinese AFR sensors

[willisnz]

As mentioned here, I am getting different readings from my AFR sensors, so one/both are on the way out.

 

Does anyone have any experience with cheap Chinese AFR sensors (e.g. this on Aliexpress or this on Amazon).  OEM is $150 USD on Partsouq and Denso $110 USD on Amazon before shipping, so the Aliexpress one is less than half the price. 

 

I know the standard answer to these questions is "go genuine, not worth the risk etc..", but I would love some insight into what the difference in quality, if any, actually is?  Plenty of things competing for a scarce amount of money at the moment and I would likely replace both sensors...

[1randomkiwi]

I've spent the last month or two trying to fix my Check Engine Light and fueling issues due to a faulty A/F sensor. After trying to go the cheap route and buying different sensors, I've now ended up ordering a genuine replacement (made by Denso) from a UK store via eBay.

My advice, grab the genuine part number, chuck it into eBay, Amazon, Partsouq and RockAuto, find the cheapest genuine sensor including freight and get that one.

[willisnz]

2 hours ago, 1randomkiwi said:

I've spent the last month or two trying to fix my Check Engine Light and fueling issues due to a faulty A/F sensor. After trying to go the cheap route and buying different sensors, I've now ended up ordering a genuine replacement (made by Denso) from a UK store via eBay.

My advice, grab the genuine part number, chuck it into eBay, Amazon, Partsouq and RockAuto, find the cheapest genuine sensor including freight and get that one.

I thought you replaced the wrong sensor or something similar? Or was it the right sensor but wrong part since you went el cheapo?

 

RockAuto actually isn't too bad on the Denso.

[1randomkiwi]

4 minutes ago, willisnz said:

I thought you replaced the wrong sensor or something similar? Or was it the right sensor but wrong part since you went el cheapo?

 

RockAuto actually isn't too bad on the Denso.

First time was the wrong sensor, I replaced the rear instead of front.
Second time I replaced the front with what I thought was an equivalent Denso... turns out it wasn't.

Researching online I've read a number of things, most people recommended avoiding the cheap alternatives as they just aren't as reliable.

[Kiwi_Fozze]

pull out sensor

 

write down denso part number

 

buy cheapest genuine denso available, using that stock number.

 

rockauto.com has been one of the cheapest i've found so far, $178nzd landed for a front o2 sensor for a v7 sti.... strongs and wingers want just shy of $400