TRQ oxygen sensors are manufactured to precise specifications using premium raw materials to optimize your vehicle’s emission system. Each sensor is isostatically-pressed for improved strength and durability, and plasma-sprayed to improve sensitivity and prolong the service life of the sensors. Oxygen sensors wear out over time and should be replaced every 60,000 miles to prevent poor engine performance. TRQ recommends replacing the oxygen sensors in sets to optimize fuel economy and reduce overall emissions. All products are fit and road-tested in our Massachusetts R&D facility to ensure we deliver on our promise of Trusted Reliable Quality.
Product Features
Application Specific Design: No modifications and pre-calibrated
Isotatic-pressed and plasma-sprayed for extended service life
Double-Layered 310S Stainless Steel: Additional protection from moisture and debris
Restored Engine Performance: Improved fuel economy and lower emissions
What is Upstream vs. Downstream?
Upstream location is between the catalytic converter and the engine
Downstream location is between the catalytic converter and the tailpipe
Install Tip: You may be required to reset the vehicle computer after installation of this part.
Quality Tested - built to a strict level of product standards.
Item Condition:New
Attention California Customers:
WARNING: This product can expose you to chemicals including Lead and Lead Compounds, which are known to the State of California to cause cancer, and birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov.
Lifetime Warranty
This item is backed by our limited lifetime warranty. In the event that this item should fail due to manufacturing defects during intended use, we will replace the part free of charge. This warranty covers the cost of the part only.
Returns: Parts with electrical components cannot be returned once installed.
FREE Shipping is standard on Orders shipped to the lower 48 States (Contiguous United States). Standard shipping charges apply to Hawaii, Alaska and US Territories. Shipping is not available to Canada.
Expedited is available on checkout to the United States, excluding Alaska, Hawaii and US Territories as well as P.O. Boxes and APO/FPO/DPO addresses. Final shipping costs are available at checkout.
Is my Car a California or Federal Emissions Vehicle
How to Replace O2 Oxygen Sensor 1997-2004 Chrysler Sebring
O2 Sensors is it Upstream or Downstream
How to Replace O2 Sensor 1997-2004 Chrysler Sebring
Created on:
Tools used
No Tools Needed
1. Determining Your Emissions Specification
Open your hood
Locate your catalyst sticker
If the sticker says "This vehicle conforms to California regulations," you have a California emissions vehicle
If the sticker says "This vehicle conforms to US EPA regulations," you have a federal emissions vehicle
If the sticker lists both EPA and California regulations, you have a California emissions vehicle
Hi, I'm Mike from 1A Auto. We've been selling auto parts for over 30 years. We're dedicated to delivering quality auto parts, expert customer service, fast and free shipping, all backed by our 100% satisfaction guarantee. Visit us at 1AAuto.com, your trusted source for quality auto parts.
Determining whether or not your vehicle is a California emissions or a federal emissions vehicle is pretty straightforward. To do this, you'll want to locate your catalyst sticker under the hood of your vehicle. It'll either be actually on the bottom side of the hood, most GM vehicles have it on the air box, and other vehicles may have it along your radiator support at the front of the engine bay.
All you need to do is see, "This vehicle conforms to California regulations." That means that this vehicle is a California emissions car. Just because you're not in California or are in California doesn't necessarily mean your vehicle will be one way or the other.
Now, our F150 has it down here on the radiator's support, right at the front of the engine bay and you can see here, "This vehicle conforms to US EPA regulations." This means that this vehicle is a federal emissions.
Now, here we have two things that are a little different. Our catalyst is located on the vehicle's air box and this vehicle conforms to US EPA regulations and California regulations. If it conforms to both federal and California emissions, it's considered a California emissions vehicle.
Thanks for watching. Visit us at 1AAuto.com for quality auto parts, fast and free shipping, and the best customer service in the industry.
Tools used
A Piece of Pipe (for leverage)
Socket Extensions
Rust Penetrant
O2 Sensor Socket
Ratchet
1/2 Inch Breaker Bar
1. Removing the Oxygen (O2) Sensor
Disconnect the oxygen sensor wiring harness
Apply rust penetrant to the O2 sensor
Remove the O2 sensor with an O2 sensor socket and a ratchet
2. Installing the New O2 Sensor
Twist the new O2 sensor into place
Tighten the O2 sensor with an O2 sensor socket and a ratchet
Connect the O2 sensor wiring harness
Brought to you by 1AAuto.com, your source for quality replacement parts and the best service on the Internet.
Hi, I'm Mike from 1A Auto. I hope this how-to video helps you out, and next time you need parts for your vehicle, think of 1AAuto.com. Thanks.
In this video, we're going to show you how to replace the left bank front or upstream O2 sensor in this 2004 Chrysler Sebring sedan. It's got the 2.7 liter V6 and it's pretty much the same operation for a 2004 through 2006. What you'll need for this repair is a new O2 sensor from 1A Auto, an O2 sensor socket and ratchet with extension, and some penetrating oil.
In order to make your job easier, 1A Auto has put together a kit with the O2 sensor socket and O2 sensor that you'll need to get this job done. You can certainly get it as the kit or you can just get the O2 sensor alone.
Locate the left bank front or upstream O2 sensor there, and the harness. You're basically going to lift up on that little tab and give it a tug. You can use some penetrating oil. I'm using my O2 sensor socket with an extension on my ratchet. I'm using a little breaker bar just because these can be tough to get off, so I'm using a pipe on the end of that to help me free that up. Once I get it free I'm just going to unscrew it until it comes out. Going back in, put your O2 sensor in place and start threading it by hand. Once you've done that you can get your special O2 sensor socket with the extension and ratchet and go ahead and tighten it up. Now you can reinstall that connector into the wiring harness.
We hope this video helps you out. Brought to you by www.1AAuto.com, your source for quality replacement parts and the best service on the Internet. Please feel free to call us toll-free, 888-844-3393. We're the company that's here for you on the Internet and in person.
Tools used
No Tools Needed
1. Identifying your Oxygen Sensors
Upstream oxygen sensors are located in between the engine and the catalytic converter
Downstream oxygen sensors are located in the catalytic converter or farther away from the engine than the catalytic converter
Locate your vehicle's firing order diagram
The bank that contains cylinder one is bank one
The bank that does not contain cylinder one is bank two, even if it does not contain cylinder two
Hi, I'm Mike from 1A Auto. We've been selling auto parts for over 30 years. We're dedicated to delivering quality auto parts, expert customer service, fast and free shipping, all backed by our 100% satisfaction guarantee. Visit us at 1AAuto.com, your trusted source for quality auto parts.
In this video I have a couple of oxygen sensors with me. While there are some aesthetic differences here, the wire lengths are a little different, the actual body and tip of the sensor are a little different, the threads and gasket are the same, and on the other end the connections are actually the same. I can plug these into either position on our vehicle. But if I had to ask you which one's upstream and which one's downstream, you probably can't tell just from looking at them. That's true of most oxygen sensors. The way you determine whether or not an O2 sensor is upstream or downstream is all done visually.
Your oxygen sensor position can be determined relative to your catalytic convertor. As the name suggests, upstream sensors will be located upstream or ahead of, in front of, above, closer to the engine than your catalytic convertors. This means that they see the exhaust gasses first. They then go through the catalytic convertor and to the downstream oxygen sensor, which will either be located in the catalytic convertor like our vehicle here, or after the catalytic convertor to monitor the gasses coming out of the cat and make sure that it's being efficient relative to the readings of the upstream O2 sensor.
The other determination you need to make is bank one versus bank two. Determining which bank is which can be done by looking at a picture of your vehicle's firing order. Whichever bank contains cylinder one is going to be bank one, and the other one, regardless of whether or not cylinder two is in it, is going to be bank two by default. These banks are true of V engines like V8s, V6s, and flat engines like Porsches and Subarus that have individual banks.
On inline four-cylinder engines, as long as they have one exhaust manifold like a Jeep four-liter or a four-cylinder Honda engine, you'll only have one bank with an upstream and downstream O2 sensor. There will be no bank two on the engine.
On our vehicle here, this is the passenger side, which we've already determined from the firing order is bank one. We have our upstream sensor here closest to the engine ahead of the cat. Then we have our downstream or sensor two here inside of the catalytic convertor. This could also be located somewhere after the cat. Here I have my two sensors for the vehicle. While they are aesthetically different, we can now tell this is my upstream sensor because it looks just like the upstream sensor I have up there. This is my downstream sensor. Now that we know which one's which, we can order the right part, correct the problem, and fix you up right.
Thanks for watching. Visit us at 1AAuto.com for quality auto parts, fast and free shipping, and the best customer service in the industry.
Tools used
Rust Penetrant
O2 Sensor Socket
Ratchet
7/8 Inch Wrench
1. Removing the Oxygen (O2) Sensor
Apply penetrating oil to the oxygen sensor
Disconnect the O2 sensor wiring harness
Remove the O2 sensor with an O2 sensor socket and a ratchet
If the O2 sensor socket does not work or one is not available, use a 7/8 inch wrench
2. Installing the New O2 Sensor
Twist the new O2 sensor into place
Tighten the O2 sensor with an O2 sensor socket and a ratchet or a 7/8 inch wrench
Connect the O2 sensor wiring harness
Brought to you by 1AAuto.com, your source for quality replacement parts and the best service on the Internet.
Hi, I'm Don from 1A Auto. I hope this how-to video helps you out, and next time you need parts for your vehicle, think of 1AAuto.com. Thanks.
In this video, we're going to show you how to replace a downstream O2 sensor on this 2004 Chrysler Sebring with the 2.7 Liter V6. This is a similar repair in a large variety of Chrysler and Dodge vehicles with the V6 engine. The only items you need for this are a new O2 sensor from 1AAuto.com, an O2 sensor socket from 1AAuto.com, or a 7/8 wrench, and penetrating oil.
Now, we sell an O2 sensor socket with the O2 sensors in a kit. You can use a 7/8 wrench, but these O2 sockets actually help quite a bit. You can see it's specially designed to accommodate the wires on the O2 sensor by having this open side. You can just use a ratchet to remove it. In some cases, using these type of sockets are the only way to actually get the O2 sensor out.
You don't need to lift your vehicle, but we do just so it's easier to show you. Here is the downstream O2 sensor we're going to change today. You want to start off just by spraying it with some penetrating oil and letting it sit for a second. Before removing that, you want to disconnect this harness right here. Using either a flat blade screwdriver, or your thumbnail, you want to push down the tab in there, and pull the harness apart. Now, using either your 7/8 inch wrench, or your O2 sensor socket, you just want to go ahead and remove that O2 sensor. We're just going to fast forward as he removes that.
You can see, on the left, is your old O2 sensor. On the right, is the new one from 1A Auto. They're identical. They'll work exactly the same and fit exactly the same. You just want to put your new O2 sensor into place and just twist it in. You just want to tighten that up with your wrench, or your socket, and then reconnect your harness. Now there it is, good as new.
We hope this video helps you out. Brought to you by www.1AAuto.com, your source for quality replacement parts and the best service on the Internet. Please feel free to call us toll-free, 888-844-3393. We're the company that's here for you on the Internet and in person.
OSA61316
In Stock
Product Reviews
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4.25/ 5.08
8 reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
6
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Matthew
July 30, 2017
Timely delivery, worked as expected. Threads had pre-applied anti-seize which was a nice added touch.
Did not fit
ROMULO
May 20, 2018
Sensor described as to fit up and downstream location. Not true. I tried to replaced my upstream sensor and the connector did not fit.
Policy said no returns accepted after the box is opened so I send it to the trash can. Didn't have time to send and wait for a replacement.
Result: money and time lost. I bought the part locally and replaced in my car.
Shipping and price was fine. Only and most important thing, the part, was wrong.
Correct sensor, wrong connector
I
September 7, 2018
The sensor was the correct part, but I had to make modifications to the connector to fit the harness even though it was stated to be a direct fit for 96 Dodge Intrepid.
Great value, top performance
V
August 12, 2019
After spending a couple of weeks watching the codes indicating that the down stream O2 sensor was not reading correctly I shopped around and found this. I paid about half of what I would have locally and the quality was better than I found down the street. It was easy to install and fixed my problem.
O2 sensor
Jos
December 21, 2019
Shipping was accurate and on time. exact fit and took care of my problem.
Great product and Service
Larry
February 4, 2020
I first ordered these from another vendor based on the same information i sent your company. They were of course the wrong ones. I had to send them back and that took a few weeks to get straightened out. Love your customer service and fast shipping.
Thank you,
Larry Hill
J
September 10, 2020
Good product
Good product
Joseph
December 8, 2023
Just what was needed to repair my vehicle. It arrived in a timely manner and fit perfectly. There was no need to contact 1A auto for any issues whatsoever. I recommend them for your auto repair as they stand behind all their products. Thanks
Customer Q&A
is this upstream or down stream?February 21, 2019
Michael B
10
Down stream
February 21, 2019
Derrick P
10
This part is listed to fit the upstream location on some vehicles and the downstream location on others. Please check the vehicle fit list to determine if this will fit your particular application.
February 21, 2019
Peter L
I need bank1 sensor 2 replaced on my 99 dodge avenger where is that located?September 5, 2019
Shalunda Y
10
Thanks for your inquiry. Written and video installation instructions are found on the product page under the "How-To & Tools" tab.
We're constantly adding new installation video instructions. If we do not have one for your vehicle on the product listing page, please check again at a later time or check our Video Library to see similar repairs here: https://www.1aauto.com/videos
September 5, 2019
Jessica D
10
that should be the downstream sensor located after the catalytic converter.
August 9, 2021
Dave D
Customer service
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