NTK vs. Denso O2s

[dailydriver]

Opinions/rationales please;

Are there ANY functional/longevity differences between NTK and Denso O2 sensors, or is one 'splitting hairs' either way (slight cost differences notwithstanding)??

Thanks in advance.

 

[91344George]

DENSO is more widely used as an OEM part FWIW.

 

[CharBaby]

Denso is OE and NTK(NGK) is after market but both should be equal, or should I say that all 3(Denso, NGK, NTK) should be the same. I think that's right! Someone will chime in who know more than I

 

[Trav]

I think its a toss up. NTK and Denso are both high quality OEM suppliers, there is no functional or even significant cosmetic differences that i have seen.
NTK is part of NGK and claim to be the worlds largest OEM supplier.

http://www.ngksparkplugs.com/products/oxygen_sensors/index.asp

 

[JHZR2]

Which has a nicer electrical connection?

 

[Lead Shoes]

The NTK sensor I got for my Honda was really high quality, put my mpg back up to where it is supposed to be, between those two it is really a toss up...

 

[Trav]

Both look identical i couldn't say one was better than the other.

 

[dailydriver]

OK, THANKS everyone!

 

[beast3300]

From PCM tuning experience (on W-bodies) out of NTK, Denso, AC Delco, I like Denso the best. For whatever reason with the Denso fuel trims make up their mind and stick with it for a given rpm and throttle. If that makes any sense.

 

[Chris142]

My Jeep came from the Factory with NTK's. Thats what I put back in it. The Bosch ones threw codes.

 

[artificialist]

The best thing to do is install the same brand that was installed at the factory.

 

[David1]

Originally Posted by artificialist
The best thing to do is install the same brand that was installed at the factory.



i agreeI ordered NTK via amazon.. but my car has over 250K miles on it.. So I found Spectra O2 sensors on amazon and it was on special for $9.00 and yes it was new in the box and I figured Spectra would be okay b/c we sell Spectra Fuel Pumps and Mass Air Flow Sensors and now even Radiators and Advacne Auto parts.. However Advance does NOT sell Spectra 02 sensors..... When I took the old Denso out the connector was exact and snapped in perfect. However the o2 sensor itself looked different..
Anyways I put it in and all seemed ok.. 2 days later I'm getting Oxygen Sensor bank 1 sensor 1 HIGH Voltage...

Whats funny is the old Denso that had 250K miles on it was say Oxygen Sensor bank 1 sensor 1 NO Voltage...

So I quickly at work got 2 new denso 02 sensors and used my TM discount 25% OFF and used a 40$ Speed perk and got both for 40$

Im going to install them in the morning.. I took them out tonight .. however the directions say to install them with ambient tempture.. So Im going to do it with car cold..

I warned the car up to get them out.. it was much more easy..

However all the techs at work laughed at me and said many cars are funny.. USE Original sensors or you will regret it later and I see it already.

 

[Skippy722]

NTK seems to be OEM on a lot of Mopars, at least all the ones in my families fleet of them. So that's what I put in my Caliber when it was time.

 

[slacktide_bitog]

Both are very good. There is no meaningful difference in them except price

 

[Sayonara_Sonata]

https://www.repairerdrivennews.com/...ts-from-same-manufacturer-not-identical/

 

[nthach]

I think they are both good, I see more Denso or Bosch as OEM. NTK was one of the first to bring wide-band O2 sensors to the aftermarket for tuners.

 

[PandaBear]

They are likely split hair, because OEM usually wants to have 2 sources for price and source redundancy reasons, so they have to both work close enough. Usually if you don't have Bosch as OEM I wouldn't try it, but if you do then go ahead as well. It is all about what the OEM has calibrated to from the R&D.

 

[bulwnkl]

Originally Posted by Sayonara_Sonata
https://www.repairerdrivennews.com/...ts-from-same-manufacturer-not-identical/


That's an interesting piece because it validates the observation some of us have made that even dealer-parts-department parts are often not quite the same as the part that was installed when the vehicle was first assembled. I think that's the OEM second tier level mentioned in the article. Still warranted by the manufacturer, but somehow 'less' in some way(s). It also says that even a part from an OE manufacturer (OEM), if it comes from a source other than the dealer, only has about 80% the engineering, testing, or capability as a dealer-parts-department part. That's not at all surprising to me, but I bet it is to MANY people.

 

[clinebarger]

Originally Posted by Chris142
My Jeep came from the Factory with NTK's. Thats what I put back in it. The Bosch ones threw codes.



Chrysler like to use a 5 volt bias on the O2S signal wire & I've seen it screw with certain brand O2 sensors. Ford uses no bias voltage & GM uses a .447mV (1/2 volt) bias. I understand why Chrysler does it.....To quickly diagnosed a bad O2S heater. The voltage will nose dive pretty fast with a working heater.

Though maybe it's not be the brand at all?.....I've seen new/fairly new looking Bosch sensors just hover at 5 volts even though the heater circuit checks out (Ohm & Amperage). Then I put a new genuine Bosch sensor in & it goes to work.

I wonder if there are fake Bosch sensors floating around? Ford has used Bosch O2 sensors as OE forever.

 

[slacktide_bitog]

The last Denso oxygen sensor I ordered ended up being an NTK sensor in a Denso box