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Old 04-21-2008, 03:21 PM
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Default 02 sensor question, 80 series

Is this Denso 02 sensor
http://www.oxygensensors.com/showpic...7&pkey=1276691

The same as OEM?
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Old 04-21-2008, 03:42 PM
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Can't say about the exact one you linked to, but I bought a Denso boxed O2 sensor from http://www.sparkplugs.com and it looked exactly like the O2 that I got from Burt a few years ago, except the plug was white and not gray like OEM. It also cost $70, which is about 50% of the list of new OEM.
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Old 04-21-2008, 04:15 PM
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Quote:
Originally Posted by FJBen View Post
Is this Denso 02 sensor
http://www.oxygensensors.com/showpic...7&pkey=1276691

The same as OEM?
No! The 80 uses a flange type mounting instead of screw in. Look at Christo's weld on o2 bungs for and idea of how it mounts....

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Old 04-21-2008, 04:58 PM
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I think his link is just screwy. When I go through for a 1991 3FE, these are what it shows. Not sure about 1FZ, I could not find a Denso listed on their website for that. These are very similar to what the one I put in this weekend looked like. I'd bet with like 99.999% certainty that if you bought a red box from Toyota, this is what would come in it.


Denso P/N 234-4051 for the pre-cat
$71.98


Denso P/N 234-4150 for the after-cat
$95.98
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Old 04-21-2008, 05:04 PM
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This is what they list for a '97 80 ($104)

Didn't show anything listed for a '93 other than Walker O2s. What does Stevinson, Boulder Toyota, or CDan want for OEM? IIRC orders > $100 ship free from Dan if you can't make it down to a local dealer.

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Old 04-21-2008, 09:18 PM
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Quite a few threads on Mud about people trying non-OEM O2 sensors on 80's and not getting good results. Try a search there.

I just ponied up and got mine from CDan...
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Old 04-21-2008, 10:45 PM
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I got the Denso and they've been fine. I seem to recall I saved a few bucks in the process.
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Old 04-22-2008, 09:08 AM
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yeah my link may be screwy...


i was thinking that the Denso 02 sensors were probably the exact same thing. That site has free shipping as well over $40. Just wasn't sure if it was the same as Toyota OEM or not.
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Old 04-22-2008, 09:28 AM
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Quote:
Originally Posted by Hants View Post
Quite a few threads on Mud about people trying non-OEM O2 sensors on 80's and not getting good results. Try a search there.

I just ponied up and got mine from CDan...
Non-OEM are bad juju on Toyotas generally... but Denso is OEM. IF you get the right part #. Bosch is to be avoided at all costs.

http://www.sparkplugs.com is great, saved me a bundle.
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Old 04-22-2008, 09:42 AM
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Quote:
Originally Posted by FJBen View Post
Just wasn't sure if it was the same as Toyota OEM or not.
Only Denso and Toyota would know for sure. But comparing them, I'd be hard pressed to see any difference other than the color of the plastic on the plug and my old one was at least 5 years old, so I can't say that's not just a periodic change. The proof is in the performance and my truck is running slightly better this week than last. But I swapped out several things and so I can't say the O2 alone made a good or bad difference. The ECU is still training to the new O2 and coolant temp sensor, along with the new throttle body and re-calibrated TPS.

Toyota uses Nippondenso parts and so I'd say it's very likely that they are the same part. I don't see why Denso would build the same part to two different specs. This in my mind is just like Koyo bearings. If the number on the NAPA sourced Koyo bearing is the same as the one that comes in the Toyota box, then it's the same part.

I get weary if I don't know who the original supplier is and in those cases I trust that if it comes in a red box from Toyota that it meets some sort of spec or tolerance at least. Filters jump to mind, seems that no matter who actually makes them they are generally pretty good from the dealer. Not always, but typically the filter you get from Toyota is on par with other major brands like Purolator or WIX.
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