i understand that a pre and post oxygen sensor is required but the picture only shows a port for a post converter sensor. where is the other port?
1678823
On my car it's on/near the rear exhaust manifold within the engine bay. The 2nd sensor is on the catalytic converter. I bought a new sensor just to be safe when I had this part installed.
1982991
From what I remember when reviewing information from the vendor I purchased the light from, they also have any & all parts including the sensor should one need to purchase it. It's basically like any other electronic part & should be available from many vendors.
2036345
The 2005 has 4 O2 sensors. All 4 sensors are the same, 2 in front of the converter, 2 behind.
1620432
No. There is a table on Walker's website that lists the features of all their converters, and tells you the ones with O2 sensor bungs.
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.
904951
It seems like the gas and liquid connectors attach to either post. As long as you connect them correctly, they seem to work fine.
1816215
yes make sure you keep your old o2 sensor .. cut off the electrical end off of it and use it for the new one
2016344
If your rig calls for a 13477, this IS a 13477. Also, the fitment guide says a 13477 2004 BMW 330xi (an X3). No problem. The pertinent question is whether you are after a pre or post cat sensor. Yes, the sensors before the cat are usually referred to as 'air fuel' sensors, not O2 sensors, but it's not unusual for folks to call all four sensors by the same name. The upstream (first IN line) sensors do sense oxygen, but are of a different construction/type than the downstream O2 sensors. IF you are after a 13477, this is it. I'm not sure this venue supports html..but here's a link that explains the system well: http://www.bimmerfest.com/forums/showthread.php?t=654792
1717000
post catalytic sensor, http://www.tacomaworld.com/forum/1st-gen-tacomas/75798-o2-sensors.html sensor 2.
1283268
Each vehicle is different in the amount of O2 sensors they have. Could be 1-4 or even more.If you know you only have two, the upstream is before the converter and the downstream is after it.You need to know which is bad before you replace it. Most parts stores can scan you vehicle and tell which one is suspect.
144261
I'm not sure if this is for the downstream o2 sensor. Maybe someone else can chime in on that. It's bank 1 sensor 1 near the firewall and you can also use this on the manifold towards the front bumper. They are the same. Yes. This one comes with the wire and plug. Once you are able to break them loose installation is easy.
2265900
I had codes for oxygen seasors and misfires. I replaced them with new O2 sensors and all I have now is a misfire. My code reader tells me it's 3 cylinders that have a misfire.
1761478
Yes the one I ordered was downstream. Dont forget to get an oxygen sensor socket as well.usually $20 but your parts store might have a loaner program that has one in their inventory.
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.
691598
There are (4) O2 sensors two of them upstream of the cat converter, and two downstream of the unit. They are different part's, so there will be two part #'s. 2 of each. Amazon has the best price out there so get them there, and get the AC Delco brand. Another bit of info while we're at it, you will need to get a metric plug to block off an extra hole on the downstream side of the unit. I have no idea why flowmaster put in the extra hole, and why they did not include it the kit if this assbly has other applications. You can get the plug at CARQUEST, it is the same size as the O2 sensor, 18mm if I remember right.... Also cut the (6) nuts off with a grinder on the ex manifolds or may risk the chance of breaking the studs. Then you have to pull the manifolds. It took me (2) hrs to do the job lying on my back, but it came out perfect!!!! Good luck.
1149643
Powerbuilt 648691 Oxygen Sensor Offset Pullerhttp://www.amazon.com/gp/aw/d/B00390BS7C/ref=mp_s_a_1_1?qid=1415260830&sr;=8-1π=SY200_QL40
1693937
Hello, Sir;For the UPSTREAM CNG Engine the oxygen sensor part number 13117For the UPSTREAM GAS Engine the oxygen sensor part number 15716For the DOWNSTREAM GAS Engine the oxygen sensor part number 15717 or 15718.Thanks. Hope this information are helpful. Thanks