03 explorer 4.0 v6 flex engine, do i buy two 15718? or one 15178 and a different O2 sensor for the 2 cat converter? what does downstream right mean
594246
Thank you for contacting us. The correct Upstream and Downstream Left oxygen sensor for your 2003 FORD EXPLORER 4.0L V6 is the Bosch 15716. The correct Downstream Right sensor for your vehicle is the Bosch 15717. If there is anything else we can help you with do not hesitate to contact us. best Regards, Romer
594247
Thank you for contacting us. The correct Upstream and Downstream Left oxygen sensor for your 2003 FORD EXPLORER 4.0L V6 is the Bosch 15716. The correct Downstream Right sensor for your vehicle is the Bosch 15717. If there is anything else we can help you with do not hesitate to contact us.best Regards,Romer
594248
Thank you for contacting us, the downstream right is the position for the sensor after the catalytic converter on the passenger side of the vehicle. The Bosch 15718 is the downstream left sensor & the both upstream positions. The correct downstream right is the Bosch 15717. The Bosch 15178 has a completely different connector for Land Rover and Volvo and will not function on your vehicle.
2016343
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 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... » Read More 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 « Show Less
905230
No sir, go to a muffler shop, have them cut your original cat off and weld the magnaflow cat to replace the gap. That's pretty much what I did. You don't have to mess with your o2 sensor. Now the driver and passenger is a different story.
1283267
On my Honda CRV, code was "Bank 1, sensor 1." This sensor is upstream, which reads exhaust gas as it enters the catalytic converter. The downstream sensor (which is a different part) reads exhaust gas as it exits the catalytic converter.
1977584
I buy this for my 2003 Honda CR-V LX and now chick ingin come on and it say O2 sincer upstream need to be replce Is this upstream for Honda crv 2003 LX ??
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.
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.
1562088
2000 Ford f150 5.4L regular gasThis 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. 2000 Ford f150 5.4L regular gasThis 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... » Read More 2000 Ford f150 5.4L regular gasThis 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. « Show Less
1693938
Hello, Sir; For the UPSTREAM CNG Engine the oxygen sensor part number 13117 For the UPSTREAM GAS Engine the oxygen sensor part number 15716 For the DOWNSTREAM GAS Engine the oxygen sensor part number 15717 or 15718. Thanks. Hope this information are helpful. Thanks
1076895
This sensor can be used with the left and/or right upstream on the 4.0L and 4.6L Explorer engines for 2004 based on our factory service information from AllData. You will need to cut and splice the wires as is typical for this universal replacement.
536840
Cody Chase response is incorrect. I also have a Mitsubishi eclipse RS and it is a UPSTREAM sensor (before the catalytic converter). I purchased this product and installed it myself. Fuel economy improved
1493750
15732 = Downstream sensor15733= Upstream sensorI believe you will need 1 sensor per bank
850989
Before you buy it, go to the denso website at densoautoparts com.You can check your fitment there to be sure the amazon information is correct.For your car, the correct upstream (before your catalytic converter) sensor is 234-9004.The correct downstream (after your catalytic converter) is 234-4122.The item you are looking at here, the 234-9005 is not the right sensor for your car.
1331343
I can't speak for your car but as I understand it, upstream is the sensor closest to or before the catalytic converter and others after that are referred to as downstream. Sensors after the cat are not very important and although they might turn on the "check engine" light, they will have no effect on the engine performance, they simply measure emissions. I know some in the know will solder a resistor in to negate the unit so it won't turn the light on. The upstream sensor is the important one. It would seem to me that if the connectors going to the sensor are the same colors then I would install the same sensor whether upstream or downstream. If the wire colors are different, then I would assume that the sensors are different. Hope this helps and good luck. Bob
602061
For 2002 Tacoma V6, this is the O2 sensor after the Cat converters. It has the extended cable assembly that routes through the floor panel and connects under the passenger seat. This is not the A/F sensor that is located before the Cat's
1307696
Well you take a look at your old sensor one is up stream and the other is down stream.the one closer too the engine is up the other in the middle is down.Then you would check how many wires and what are the colors. write every thing down.when on amazon put make model it will tell if its fits make sure you check everything.
683288
It is the pre-cat O2 for AWW and AWP engines. I used it for my 02 jetta 1.8t.