Is denso o2 sensor any good ?

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Im trying to save a few buck here, I cant afford OEM ac delco atm, I heard good thing about denso o2 sensor, and some say it ac delco made by em. just wonder what every one though about this, 97 camaro z28.
 
I think I have Denso O2 sensors in LS400 about 2 years ago, it works great without any problems yet. I bought it on Ebay for less than 50% that I find online stores.
 
Yes, Denso is one of the best out there. For my now-gone 2001 Civic it was two Denso O2 sensors and an alternator. All worked flawlessly until I sold the car.
 
denso is Japan made right ? any one got a site selling denso o2 sensor cheap ? my best price was $33.83 part # 234-4012 for 1997 camaro z28 5.7L
 
Originally Posted By: TJPark01
All Denso products I have used have been 100% top quality
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My car havent throw a code for o2 sensor yet, but I saw it rusty to header, and after break it out, it look like this. car ran fine and no check engine light, but it does look dirty, should I replace it now or wait until check engine light on. btw when o2 sensor bad, what it will does to the car ? thanks !
 
I must have gotten their one bum O2 sensor then. It's a Denso that's acting very lazy after 20k miles in my Buick. It'll stay high voltage for 10-15 seconds, then slowly swing down to low voltage for another 10-15 seconds. It'll then flip every second for 5-6 seconds, then go back to being lazy.

No CEL, since GM programmed the CEL to come on after 60 seconds of high voltage, low voltage, or slow switch speed. It'll switch often enough to not trigger the CEL.

A Delco sensor is on order. I'll be steamed if it's a reboxed Denso like the one I put in 20k miles ago.
 
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