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.
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 2006-10 Pontiac G6
How To Replace O2 Sensor 2007-13 Chevy Silverado
O2 Sensors is it Upstream or Downstream
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
O2 Sensor Socket
Ratchet
Swivel
1. Removing the Oxygen (O2) Sensor
Unclip the O2 sensor wiring harness from its bracket
Disconnect the oxygen sensor wiring harness
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
Clip the O2 sensor wiring harness into its bracket
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 replace the upstream oxygen sensor. Now that's the one that's before the catalytic converter. It's between the motor and the catalytic converter. This is a 2007 G6 with the 4 cylinder motor, same as any G6 or Saturn Aura. The only tool you'll need is a 7/8 inch, oxygen sensor socket and a flexible headed ratchet will make the job easier.
Access your upstream oxygen sensor. It's right in behind the engine. This is a 2.4 liter, 4 cylinder. There's the oxygen sensor. There's the electrical connector. Now back in, there's a blue, little safety lanyard that you need to pull out. Then, there's just a tab on top of the connector, pull it up with your thumb and then you should be able to pull the connector right off. Now grab the other end, the end that's connected to the O2 sensor and pull it out of the clip. This is the tool that makes all the difference. It's an O2 socket. See it has a big slot in it that allows the electrical connector to go out to the side and then you put the socket around the oxygen sensor. A flexible headed ratchet like this is going to be your best bet, allows you to get the most leverage. Once you get the ratchet on there, turn the O2 sensor out and actually, this one comes out fairly easily once we get it started.
The new sensor goes in, just opposite of how the old one came out. Put it in place, get it in the hole and you can usually start it in by hand. Then, once you get it fairly tightened up, then make it nice and tight with the socket. Now, obviously, we need to reconnect the oxygen sensor. I'm just going a little fast, here, because doing it with one hand, makes it a little more difficult, but reconnect the connector. Make sure you put that locking clip back into place. Then clip the connector back into the bracket.
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
A Piece of Pipe (for leverage)
Flat Blade Screwdriver
O2 Sensor Socket
Ratchet
1. Removing the Oxygen (O2) Sensor
Raise and secure the vehicle
Remove the O2 sensor with an O2 sensor socket and a ratchet
Remove the rest of the sensor by hand
Disconnect the oxygen sensor wiring harness
Disconnect the clip to remove the sensor wire
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 clip to the sensor wire
Connect the O2 sensor wiring harness
Lower the vehicle to the ground
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 show you how to replace an O2 sensor on this 2011 Chevy Silverado 1500. It's the same part and a similar process on a large variety of GM models. The items you'll need is a new O2 sensor from 1AAuto.com, flat blade screwdriver, specialized 7/8 inch socket specialized for O2 sensors, ratchet, and possibly a piece of pipe for leverage.
We have the vehicle lifted. You don't actually have to do this, we just do this to make it easier to show you. Right here is your downstream O2 sensor, your catalytic converter, and your upstream O2 sensor. On the other side same thing: downstream, catalytic converter, and the upstream.
We're going to show you how to replace one of the upstream O2 sensor. Here's the 7/8 inch socket wrench, and you could use a 7/8 wrench but we recommend the socket. It will make it a lot easier.
Slide that special socket on there, attach a ratchet, and a piece of pipe for extra leverage. Once you break it free you can loosen it the rest of the way and remove it by hand. If you follow the harness from the O2 sensor you'll end up here. This will be a little bit hard to show some of this because there's not a lot of space to work there. Pry off the clip that holds this to the harness. You see that's freed.
Now, what you want to do is use a pair of pliers. You can also use your hands or a screwdriver. Pull that green pin out and then disconnect the harness. There's actually a little black clip that connects the harness. Pull that out of there. You may need a flat blade to help you pry it out.
Here's the new part up front, the old part in the back. You can see they're identical. The exact same part, all the same mounting points and everything. Feed your new O2 sensor up into place and twist it in. Fast-forward as he tightens that up. He does this at a slightly different order, but it's the same set of clips.
You want to first reconnect that wire to that harness there with that large clip. Take that little black clip and slide it into place on that bracket. Reconnect the harness and slide that green pin back into place. You're all set.
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.
OSA61320
In Stock
Product Reviews
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4.66/ 5.050
50 reviews
5 Stars
4 Stars
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1 Star
39
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Oxygen Sensor Excellence
John
January 31, 2017
Best price I could find, fits perfectly as the original did, shipped quickly. I would definitely recommend this product and I always check A1 Auto first when looking for OEM replacement parts.
Oxygen sensors
james
February 16, 2017
They fit and worked perfectly , easy and fast ordering and quick delivery
O2 sensor replacement
Kevin
February 20, 2017
Quick & easy, worked without issue! Delivery was fast!
failed product
william
March 4, 2017
The service was excellent -got the product in good time
put it on -worked great for ten days then the rpms went
down then back up the down and died. The comp. read
out is upstream ox censor -how do I proceed from here
Bill
Issue with part resolved quickly
Beth
March 12, 2017
The original part received was faulty. I believe it had a bad connection at one end of one of the wires. A replacement was shipped out after customer service was convinced it was faulty. the 2 part shipped quickly and resolved the car problem. I will buy from 1A Auto again but cautiously since the parts appear made in China as long as their support remains top notch .
o2 sensor
Frederick
May 13, 2017
shipping was fast (no cost) thanks to video installation was easy would recomend a1 auto
L
July 16, 2017
I Would recommend this product to anyone who has this problem with upstream 02 sensor. It was easy to remove replace product .After I removed negative battery terminal rest check engine light it did not come back on and am extremely satisfied.
Perfect part
Ross
August 7, 2017
Arrived on time and cleared my trouble code. Installation video was a big help.
Great parts!!
Robert
August 9, 2017
This part was an exact fit very easy to install and I would recommend this part. I bought other parts A1Auto that fit perfectly .
Purchase & install 4 O2 sensor, 03 silveroda 5.3
John
September 16, 2017
I installed all them in my home garage less then two hours. Disconnected the battery for two hours. Took the truck for a drive. The check engine light went out in about ten miles. Everything is alright so far. (I am a DIY person.)
Good deal
M
September 24, 2017
Price was much better than what they offers locally. It arrived on time and well packaged. Plugged right up to my truck, no problems installing. No more check engine light. I would recommend this product to anyone needing it. But I would add make sure it's your sensor first and not something else causeing it.
Great product
Onecimo
December 5, 2017
Went to the auto parts store to get the check engine light looked at, all codes pointed toward the Oxygen sensor but the store couldn't tell me which one. The cost at the store was almost twice what I paid for on 1A Auto for a single sensor. I purchased all 4 and replaced them on my truck in about 1.5 hours. Parts fit exactly without an issue, check engine light is off now, truck is running a lot better as well. I would definitely recommend and purchase from them again!
Great product
L
January 10, 2018
Sensor arrived quick, other than the fact that Chevrolet gives you NO room to fit a normal size hand to get to the connector, this was easy to install.
Great value and quality
G
February 9, 2018
I was impresseed with the quality, price and the speed that my product arrived. Keep the great work going.
Eric
February 12, 2018
Product was exactly what I ordered and was easy to replace
As ordered and as easy as video to install
Brian
August 8, 2018
Not a professional mechanic but I followed the instructions on the A1 video to remove the old sensor and install the new one and it took me less than 15 minutes. I added an extra zip-tie. Would highly recommend.
greta service
T
August 26, 2018
Great service, good product and fast delivery!
Good Job, I will order again
Perfect fit
mark
October 11, 2018
The part arrived right on time, it fit perfectly in my car.
Great service
Daniel
November 20, 2018
I appreciate your low prices, great customer service, and your company stands behind its warranties.
A bit smaller than stock
Joe
April 4, 2019
And what I mean by that, is the sensor shaft that goes in the exhaust pipe is a bit smaller than stock. I'm not sure if this will pose any problems. Above that, it installed easily with the proper sensor socket and plugs in to the old fitting. . Unfortunately after installing the sensor I found the wire upstream of the sensor had been rubbing on the front drive shaft and had worn through the wires; thus setting off the "check engine" light. Make sure you check this first and don't just go by the reader like I did. Installed on a 2004 Avalanche Z71 4x4.
Works great
B
June 10, 2019
Very easy to install, works great MUCH cheaper than buying from anywhere else
Great O2 sensor
Alex
June 17, 2019
Fast shipping. Part fit and took care of my problem. Quality and price are great! Highly recommend.
Awesome
T
July 1, 2019
Happy with my purchase. Will order from again. Very reasonable prices and I love that it automatically added the tool to replace part in my cart. Made things so much easier. I recommend totally. The videos showing how to replace parts was awesome
U
August 9, 2019
Having the part put in right now part looks good
K
November 7, 2019
The O2 sensor was a perfect match for my repair and utter was affordable.
Great part
G
November 23, 2019
Great part and fit perfectly !! Will buy again!
Oxygen sensor
Richard
January 23, 2020
Oxygen sensor was priced fairly it was a perfect match and fix the problem very satisfied
F
March 13, 2020
Exellent service fast shipping will be back for more parts soon
05 GMC Yukon 02 sensor
Amedeo
April 9, 2020
Exactly what was needed to pass emissions. Fit perfectly.
Thumbs up!
R
May 14, 2020
Had codes for the upstream O2 sensors, so we changed them both. Parts were a direct fit...seems to be what we needed to correct the problem! The order placed, shipped & received in just a couple days! Thanks 1A!
Great Quality
I
August 4, 2020
O2 sensors are a pain. This product is made of great quality and hasnt given me any problems installed 4,000 miles ago
Good price
S
October 16, 2020
Love the price tag. Plugs right in works right the first time. Has anti seize already on the threads.
02 oxygen sensor
Larry
November 26, 2020
Perfect it done the job no more check engine light on its been two weeks now
Perfect fit
R
February 22, 2021
Part fit perfectly and is working great. Will purchase more parts from A-1 when needed. Service is great and parts came quickly.
Always the right part shipped quickly
Andy
March 17, 2021
I always buy my parts from one a auto because I cant depend on them to ship the right part for a lot less money than my area auto parts stores. Their web sight is easy to maneuver and they make it easy to order the right part the first time. Write your review here. It must be at least 50 characters long. Consider whether you would recommend this product and what you like or dislike about it.
Perfect fit
William
April 11, 2021
Ordered 2 of these for 2012 Tahoe and they fit perfect and plugged right in. Check engine light is off now! Thank you.
Great Deal
Alan
April 18, 2021
Great oxygen sensor for the price. I shopped around and was glad i did. I highly recommend this site if you're looking for parts.
Chasyn
September 23, 2021
Great part and fix exact
Awesome
Robert
March 1, 2022
perfect fit half the price, and it shut off my light
Brenda
March 27, 2022
Part works as advertised
Easy fix
Bradley
May 5, 2022
No more cel
Go with OEM for sensors
Trevor
June 3, 2022
Sensor failed in a month.
Wound up completely dead and threw a code for inactivity.
Scan tool confirmed no voltage coming from sensor.
Good product
Julius
July 21, 2022
Good product
Perfect fit
Robert
July 26, 2022
Fit perfectly. Works fine - no check engine light. 2011 Chevy Silverado 1500 LT 4x4.
Donald
September 20, 2022
Good
Louis
December 16, 2022
Great product good service
Alan
January 29, 2023
As good if not better than OEM cost effective.
Exact match for 03 Tahoe
David
June 8, 2023
Cleared my O2 code, passed smog
Abiodun
November 14, 2023
Good.
Great!
Benjamin
June 16, 2024
Works in every way...is cheap...has anti seize on it already
Customer Q&A
How do you tell which sensor is bad?February 27, 2016
Mark D
10
Proper diagnostics from a repair facility/shop. Not something you can ID in your driveway
February 29, 2016
Brian F
10
The auto repair place put a computer hook up to the car, it identified a error number (code), that code identified the item. while the engine light did go out for a period of time the engine light did come back on.
hope this helps
d
February 29, 2016
Dave H
10
I cannot answer that. But the cost of doing it myself vs. Paying a garage to replace, it was worth changing 2 at least
March 1, 2016
Griffin D
Which sensor is bank 1 sensor2?March 21, 2018
Travis B
10
Bank 1 Sensor 2 - Is the Drivers side; after converter;
Bank 1 Sensor 1 - is the Drivers side; before converter;
March 21, 2018
Mark K
Is this one the bank 2 sensor 1 ?March 12, 2019
Antonio L
10
This part is specific to vehicles with a particular set of options. We will need more information about your vehicle to confirm the fit. If you can provide your VIN we would be more than happy to assist you further.
March 12, 2019
Curtis L
Engine light comes on have it checked out says its 02 oxygen sensor chang that within10 miles the engine light back on check it out and say it needs another 02 oxygen sensor is bad car.runs great is there something else it could be?April 25, 2019
Fran J
10
There could be multiple reasons why you're having this particular problem. We suggest taking your vehicle to a nearby reputable shop to identify the cause. Once you know the cause, we'll be happy to see if we carry the parts and how-to videos needed for your repair.
April 25, 2019
Emma F
This is a replacement or original?August 12, 2019
Carelis R
10
1A Auto's house brand parts are manufactured by various aftermarket companies specifically for us and built to your vehicle's exact OEM specifications. Please let us know if you have any other questions.
August 13, 2019
Peter L
On 2003 Chevy suburban 1500 5.3 flex fuel 4x4 is the upstream and downstream o2 sensors the same?September 6, 2019
David S
10
Yes, I would recommend replacing all 4 sensors at once. I tried one at a time as I got the check engine light. Ended up replacing the newer one too. Once I replaced all 4 at the same time I have had zero issues. Engine going on 192,000 miles
September 6, 2019
H U
10
Thank you for your inquiry, for that vehicle the O2 sensors will be the same for all 4 locations. Please contact us if you have any further questions.
September 6, 2019
A C
Which sensor is this? Upstream or down stream?March 31, 2021
Pauli M
10
It can be either depending on the vehicle it is being installed on. Please check the 'Vehicle Fit' tab to see these details.
April 1, 2021
Andra M
P0141 p0146 codes when have truck driving/on in 100 + days . Why would the Texas heat , not truck overheating, cause the codes?June 20, 2021
Kendell M
10
There could be multiple reasons why you're having this particular problem. We suggest taking your vehicle to a nearby reputable shop to identify the cause. Once you know the cause, we'll be happy to see if we carry the parts and how-to videos needed for your repair.
June 21, 2021
T I
How many O2 sensors does the 2007 Pontiac G5 2.2 have? And wich ones are up stream and down stream ?January 25, 2022
Zachary O
10
There will be two oxygen sensors. The sensor you are inquiring about is the upstream sensor. We do not currently carry the downstream sensor but it would be located after the catalytic converter.
January 25, 2022
Jessica D
Which oxygen sensor is for bank one and which is for bank two# osa61760 # osa61761 ???October 29, 2022
Randy J
10
Hello, we would be happy to assist you, could you reply with your VIN#, please?
October 29, 2022
Ricale A
10
Theyre all the same.
October 29, 2022
Jhevaughn L
Picture shows a male plug but description says female. Which is it? I need a male plugSeptember 25, 2023
John D
10
This will be a female plug.
September 27, 2023
Emma F
Will this fit my 2004? Chevy avalanche, 1500 Z66. The 2 code I need are p0134 heated oxygen sensor & po135/3/3 pending heated oxygen sensorNovember 4, 2023
John D
10
It fits my 2008 silverado
November 4, 2023
Roger R
10
It fits my 2008 silverado
November 5, 2023
Roger R
10
Yes, this part will fit your vehicle.
November 6, 2023
Jessica D
10
Very good.
November 14, 2023
Abiodun O
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