o2 sensor brand durability? [ Archive] - GasSavers.org - Helping You Save at the Pump

Anyone have an opinion of who's best out of Bosch, NGK or Denso?

Personally, I've only been able to find bosch locally so thats what I pick up but I haven't had a bosch o2 last longer than it should last...one was replaced at 22k and the other 24k! They should last 30k, what a ripoff ya know?

sparkplug.com has them cheap as the local stuff.

NGK/Denso should be the same/best. My stock one has worked fine for 120k, Bosch bones.

NGK all the way!!

Bosch blows. I'm in the process of replacing all the bosch crap with NGK. I'll probably replace my oxygen sensors at 100k

SVO, how many wire is yours?

Only a 1 wire. On a side note, I pulled one off a free engine that'd been sitting outside and it's still running strong, :p

Only a 1 wire. On a side note, I pulled one off a free engine that'd been sitting outside and it's still running strong, :p

more free stuff???
ROFLMFAO

Nah, this is all part of the free bundle of crap I got including dan's transmission.

in my experience o2 sensors rarely cease to operate. However, its a question of how well they work as they age. I wonder if a mechanic with a scanner would say your o2 is "healthy" or not?

As the sensor ages it will get whats called sluggish, it will not necessarily ever break or fail.

Sluggish means that the voltage coming from the o2 will greatly transition only once per second. This lean to rich fluctuation should happen twice per second or more on the newer cars(o2's) to be called "working" and "healthy"

The fluctuations are simply lean/rich representations as voltages. There are "bench tests" that can check an o2 but I really don't think they are worthwhile and accurate. A running test engine and scanner will show you exactly whats going on.

I gave it to someone who had a lazy o2 sensor, and it solved his hesitation issues, so I'm confident it's working well.

coolio, will look into ngk/denso brands :)

For 4 or 1 wire units, I buy only NTK. For 5-wire units...BOSCH! :p

However, its a question of how well they work as they age. I wonder if a mechanic with a scanner would say your o2 is "healthy" or not?

as a macanic i can say that when a o2 gets "lazy" it dosent switch from rich to lean and vice versa fast enough. when they smog your car, they hook up a DSO or digital storage ocolascope (o-sill-a-scope) and can see how fast it switches. obd0 / 1 is 100ms and obd2 is 75ms.

on a side note do u recomend the same as honda uses (ngk?) like this one:
http://rywire.com/store/product_info.php?cPath=36&products_id=60&osCsid=af6781d38053eef6a3b220545e882ea2 or will any (boush) work w/ a obd1 swap?

When I replaced the O2 sensor in my old Dodge Spirit I cheaped out and went with a Bosch. It crapped out after 40,000 km...the OEM one had lasted around 260,000 km.

I've heard this is relatively common. OEM components just seem to last longer than aftermarket in my experience (I had the same issue with some Monroe struts compared to the OEM struts from Dodge - OEMs lasted 3x the distance).