Is this downstream or upstream? Are 2 required on a 97 Chevy C3500 2WD 5.7L
1653078
This is one of the sensors down stream of the catalytic converter, and yes there are two, one for each exhaust pipe before the muffler. Both downstream sensors are the same.
850113
This is the Up-stream sensor (located before catalytic converter). The Down-stream sensor (located after catalytic converter) is Bosch part# 13444.
287927
It is upstream. It attaches to the catalytic converter. It works as OEM. Mine is still running great.
1812063
Need to know the make and model and engine type of the car to answer this question. Are you asking about bank 1 vs bank 2, or are you asking about upstream vs downstream? Go to the Denso web site to see what sensor you need. http://densoautoparts.com/find-my-part/vehicle-selection
1606634
Sensor 1 is bad. It's possible sensor 2 is as well but I would start with just sensor 1 because it could be reading "unknown" because the lack of a signal/data from sensor 1. You didn't specify if they were upsteam sensors (O2S11 & O2S12) or downstream after Cat (O2S21 & O2S22), but the upstream sensors are the most important cuz they control fuel trims & Air/Fuel Ratios. The downstream sensor are really only there to tell you if the Cat is good or not. I'm assuming you only have one Upstream & 1 Downstream sensor but some vehicles have more depending on exhaust setup. You may only see O2S11(Upstream 1) & O2S21(Downstream 1) or a combo of O2S11(Upstream 1), O2S12(Upstream 2) & 02S21(Downstream 1). Or even two Downstreams if you have true dual exhaust & not a Y-Pipe. You can tell if it's a upsteam or downstream sensor by the 4th character in the name coding. Example: 02S*1 * = 1:Upsteam, 2:Downstream. You can tell if it's a right or left sensor by the 5th character in the name coding. Example: 02S1* * = 1:one side, 2: other side. (Sorry can remember which one's right & which is left) Hope this helps.
1283269
They are two different sensors, i recommend going to the Denso website to get the two part numbers. The upstream fails more often and the downstream one is usually cheaper.
1168737
No the upstream (first) O2 Sensor should fit in this header. The downstream (second) sensor is already installed before your other catalytic converter. In order to prevent a check engine light I suggest moving the downstream sensor behind the second catalytic converter if you're buying this header.
1621712
It is for the upstream location before the catalytic. Right below the exhaust manifold.
876506
4092 is the one after the cat....u have the one you can see just poping the hood which is 9005 I believe. BTW the are excellent quality for the price....so yes 4092 is downstream after the manifold
1829346
I would check with the dealer. The manual was printed back in the day and things change so I would go this route. It's better to find the drain plugs in the block to get all the fluid out. Go to home depot and get a concrete mixing tub and this will catch all the fluid so you don't get it on the ground. Also make sure no animals get near the fluid as they may lick it
640320
Mine was an ''02 Camry. Best to crawl underneath an find them. That is what I needed to do. I had 2 downstream. I changed both as they were the originals.
453099
When I researched it for mine, came back as upstream, which is where mine is installed. Now referred to as "alternative fit" in Bosch fit guide. I haven't had any problems so far....
912541
The unit must be installed with flow following the arrow. It is directional. Do not install with flow going against arrow on unit.
1562089
2000 Ford f150 5.4L regular gas This part number 15717 is specified for the downstream; bank 1&2, sensor 2 in both cases. Part number 15716 is for the upstream sensors(sensor 1), either bank. These are original spec, exact fit, california approved O2 sensors. They do an excellent job. The downstream sensors can be replaced with a standard box or open end wrench. (I forget the size, 7/8 I think) very easy, takes all of 5 mins each. The upstream are in a much tighter space, especially the passenger side. Passenger side btw is the number 1 bank. Driver side is the number 2 bank. I highly recommend you get the short offset O2 sensor socket wrench. Powerbuilt 648691 Oxygen Sensor Offset Puller or something like it.
287926
This is an upstream sensor. It has a short cable and special plug that fits Nissan upstream connectors. The cable is also thick because of the high temperature of the manifold.
717522
You have to. This is for both inlet and outlet tube and it is longer than you need.
85259
If you have the V6, both upstream sensor should be the same. Your diagnostic code should tell you if your problem is bank 1 or 2. I only needed to replace the bank 1 sensor and that solved the issue. Check out this web page for more info, (maybe more than you need, or want). http://www.autoshop101.com/forms/h37.pdf
1233595
This is downstream. part number 234-4162 is Upstream. The sensor should be universal to CARB requirements.