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.
How to Replace Downstream O2 Sensor 2008-09 Chevy Equinox
Created on:
Tools used
Jack Stands
22mm Wrench
Floor Jack
1. Removing the O2 Sensor
Jack up and secure the vehicle on jack stands
Disconnect the O2 sensor connector
Remove the O2 sensor with an O2 socket or 22mm wrench
2. Installing the O2 Sensor
Remove the cap from the new sensor
Install the sensor into the threads as far as possible by hand
Tighten the O2 sensor with a 22mm wrench
Connect the electrical connector
Hi, I'm Mike from 1AAuto. We've been selling auto parts for over 30 years! We're dedicated to delivering quality auto parts, expert customer service, and fast and free shipping, all backed by our 100% satisfaction guarantee. So visit us at 1AAuto.com, your trusted source for quality auto parts.
In this video, we're going to be working with our 2008 Chevy Equinox, 3.4-liter V6. We're going show you how to remove and replace your downstream O2 sensor.
If you like this video, please click subscribe. We have a ton more information on this and many other vehicles. If you need this part for your car, you can follow the link down in the description over to 1AAuto.com.
Here are the items you'll need for this repair: 22mm wrench, jack and jack stands
Raise and support your vehicle. We're using a lift to make it easier to show you what's going on, but this job can easily be done in your driveway or garage at home, on a jack and jack stands.
Disconnect the electrical connector for the O2 sensor. Using an O2 sensor socket or a 22 mm wrench, remove the O2 sensor from the exhaust pipe.
Here we have our old O2 sensor that we removed from the vehicle and our new part from 1AAuto.com. As you can see, these parts have some minor aesthetic differences, but all the major components are the same. We have the same threads and the same socket size. The new harness is actually a little bit longer, but does have the same four pin connector at the end.
If your vehicle is throwing a code for a cat efficiency issue or an air fuel mixture problem, or a code just for a downstream O2 sensor, this part could be at fault. This new part from 1A Auto is going to go in direct fit, just like your original equipment and fix you up right.
Remove the cap that comes on the end of our new sensor. Install it into the threads as far as you can by hand. Finish snugging it up with your 22mm wrench, and reinstall the electrical connector.
Thanks for watching. Visit us at 1AAuto.com for quality auto parts, fast and free shipping, and the best customer service in the industry.
OSA61746
In Stock
Product Reviews
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4.88/ 5.08
8 reviews
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O2 sensor seems to solve engine warning light
WILLIAM
August 31, 2019
SOLVED my problem I.A.W. ORB2 error codes
H
March 28, 2020
Awesome product and fast shipping!! A1 guys!
Great price
S
October 16, 2020
The sensor plugs right in and is correct. Also has some anti seize on the threads. Thats a nice touch. Great price and value.
Good quality
E
December 27, 2020
Got my parts delivered very quick and the parts were of good quality easy video guide to install and customer service was very helpful
For sure will order my next parts from 1Aauto again
Censor
Desiree
January 1, 2021
Works good. Truck is running much smoother now......................
JOHN
August 18, 2021
Yes yes I have it worked out well Im satisfied with the product and the prompting delivery
Very satisfied, no surprises.
Louis
December 16, 2022
Good selection, quality product, on time delivery.
Abiodun
November 14, 2023
Good.
Customer Q&A
How would I reset my computer on my 08 GMC Sierra after I install both O2 sensors ?November 8, 2019
J N
10
Hello Jefferey,
Thank you for your inquiry! In order to reset the computer and codes on the vehicle, you would just need to disconnect the positive terminal from the battery for a few minutes. Once reconnected the computer should be reset. We hope this helps you out and please let us know if you have any further questions, thank you!
November 8, 2019
Jessica D
does this downstream work for left and right side !?April 25, 2021
Dany L
10
We would need your full vehicle information to verify the location for you.
April 25, 2021
Ricale A
10
No,there are left and right side
Check out your truck to make sure. 1AAUTO is a wonderful company to work with. Ask to talk with a salesperson, VERY FRIENDLY AND HELPFUL
DELIVERY IS QUICK. GCB
April 25, 2021
G C
Is part number OSA61746 the up stream or downstream?March 8, 2022
Eric Z
10
This will be a downstream sensor.
March 8, 2022
Jessica D
10
I bought mine for the Upstream oh, I think you can use it for both.
March 9, 2022
Anthony E
Customer service
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