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.
How To Replace Downstream Oxygen O2 Sensor 2001-06 Hyundai Elantra
Created on:
Tools used
Jack Stands
Anti-Seize Grease
Complete SAE Wrench Set
Floor Jack
1. Removing the Oxygen Sensor
Raise and secure the vehicle
Disconnect the oxygen sensor wiring harness
Loosen the oxygen sensor with a 7/8 inch wrench
Attach another wrench to the 7/8 inch wrench for leverage if necessary
Pull out the oxygen sensor
2. Installing the New Oxygen Sensor
Apply anti-seize fluid to the threads of the new oxygen sensor
Thread in the new oxygen sensor
Tighten the new oxygen sensor with the 7/8 inch wrench
Connect the oxygen 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 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 the downstream oxygen sensor, or the oxygen sensor that is after the catalytic converter. You'll need a jack and jack stands to raise your car and support it securely, and then you'll need a 7/8 inch tubing wrench, and then another wrench to hook on to it for some extra leverage.
Locate the downstream oxygen sensor and the connector right above it, and go ahead and press the tab and pull it free. I'm using a 7/8 inch tubing wrench, sliding it over the harness. I'm going to use an extra wrench.
I've got the new part from 1A Auto with the anti-seize that comes with it, and I'm going to spread the anti-seize just on the threads, careful not to get it on the end. Go ahead and thread the new O2 sensor in, and tighten it up. Plug your sensor back in.
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.
OSA61179
In Stock
Product Reviews
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4.53/ 5.017
17 reviews
5 Stars
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Best Customer Service
Dinesh
February 19, 2017
I will not buy parts from anyone else but 1AAUTO...I end up ordering a wrong part and they were on top of it and didn't give me the run around as you would think ordering online.
But really were kind and problem solved my issue right away.
I can't appreciate it enough.
Plus, you will get the best price...I sure did and I looked everywhere before ordering with 1AAUTO.
Thank you.
o2 sensor
peter
July 24, 2017
the part fit perfectly, received very fast, great price.
Michael
November 9, 2017
Fast shipping, video was easy to follows, got my old sensor switched out quick with no problems at all.
Philly First Timer
P
November 14, 2017
Ok IV'E BEEN CHECKING OUT THE 1 A AUTO SITE FOR A WHILE > CHECKING OUT THE VIDEOS AND INVENTORY FOR OUR CARS SECOND ORDER COMING SOON .
Works as described
M
March 27, 2018
Installed on my Hyundai Elantra 2003 GLS as a downstream sensor. Check engine light went off. It's been 500 miles with no problem, so I am satisfied.
Wrong parts
V
September 25, 2018
Twice I have received incorrect parts and both times are under review, yet no resolution. Patience is running out and getting close to not ordering from 1aauto.
Great value
Y
April 6, 2019
Ordered two oxygen sensors and they came fast. Lowest price I can find for the same item. Free shipping. Best value. Fit perfectly for my car
Perfect fit
shawn
September 16, 2019
No issues, fast shipping, great price
Perfect fit and works great!
E
May 10, 2020
This sensor fit perfectly and works like a charm for my 09 Kia Spectra! Will recommend parts here frequently.
Wrong part
Marissa
May 12, 2020
I ordered this to A tee and it doesnt fit my vehicle I just need one that does Im frustrated! Shipping was quick though
O2 sensor
C
September 28, 2020
order was delivered on time, it was the right part. This is good, considering the covid and all. And the price was GREAT.. I'm on a fixed income and keeping my car running is important to me. Will order again from 1 A auto.
Derral
December 18, 2021
It worked perfectly. It was an exact match.
02 oxygen sensor
Felix
January 28, 2022
It fits perfect on my 02 elantra.
Sabahtin
May 31, 2022
Good service very happy. All call again.
Always amazing!
Jose
June 5, 2023
Excelent!!! 100%
A1 Auto gets it right!
Jesse
March 10, 2024
Ordered the sensor and received it in a couple of days.
Right part great fit, end of those error codes!
Craig
May 16, 2024
So far so good, fit my 2008 Hyundai ELANTRA perfect
Customer Q&A
Is this upstream or downstream ?January 5, 2022
Shirshak A
10
I used in a 2006 Hyundai Elantra at the header. Not sure if that's upstream or down. Hope this helps.
January 5, 2022
Christopher J
10
It depends on the vehicle that it is being installed on. What is the year, make, model and engine size of your vehicle?
January 5, 2022
Andra M
10
It's a downstream sensor
January 28, 2022
Felix T
CAN THIS FIT 2004 MATRIX?November 23, 2022
John D
10
This part will not fit your vehicle, but we may have a part that is listed to fit.
Please enter your vehicle's year make and model in the search bar at the top of the page. This will display parts guaranteed to fit your vehicle. Just be sure to verify all of the information shown in the Vehicle Fit tab before ordering.
November 23, 2022
Jessica D
Customer service
877-844-3393
Monday - Friday 8:00am - 9:30pm ET Saturday - Sunday 8:00am - 4:30pm ET
Hyundai is a registered trademark of Hyundai Motor Company. 1A Auto is not affiliated with or sponsored by Hyundai or Hyundai Motor Company.See all trademarks.
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