About TRQ: TRQ is a trusted brand dedicated to making every repair a success story by combining premium parts with easy installation. Each TRQ part is engineered by a team of automotive experts to meet or exceed OEM standards, delivering enhanced performance and maximum longevity. With rigorous in-house testing, the brand ensures superior fit and function across every product line. TRQ also provides customers with best-in-class, step-by-step installation videos—so you can complete repairs with confidence, whether you're a first-time DIYer or an industry professional.
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
Description
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.
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.
Returns: Parts with electrical components cannot be returned once installed.
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.
This part fits
12 vehicles spanning 2012-2021.
Fits these Makes
Select vehicle
Year
Make
Model
Description
2015-2018
Chevrolet
City Express
Chevrolet City Express L4 2.0L Downstream Bank 1 Sensor 2 O2 Oxygen Sensor TRQ OSA61786
Nissan Quest V6 3.5L To 8/31/14 Production Date Downstream Rear O2 Oxygen Sensor TRQ OSA61786
Part Interchange
Brand Label
Part Number
Walker Products
250-241108
Nissan
19060522
ACDelco
19316344
Nissan
226A03NT0A
OMNIPARTS
19060522
DENSO
234-4599
This item may be interchangeable with parts from other brands with the above part numbers.
This information is provided only for reference and does not guarantee that the item you are
purchasing is identical to parts with part numbers from the brands listed above.
To confirm that this item fits your vehicle, use the above "Check Vehicle Fit" option.
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.
OSA61786
In Stock
Product Reviews
5.0/ 5
★★★★★★★★★★
4 reviews
5★
100%
4★
0%
3★
0%
2★
0%
1★
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Customer photos
★★★★★May 23, 2025
Worked with me
The is order, the line was too short, able to contact customer service and was able to handle this with no problem. The longer wire harness came a couple of days later. Was pleased with 1A Auto and how well they handle this issue. Bought the same from another parts online dealer, they the salespeople didn't know anything about their product they sold and handed me off to the manufacture. Terrible
★★★★★March 11, 2024
Perfect fit and high quality product
Perfect fit and replacement for my Nissan NV200. The van was throwing a code for the downstream sensor and this replacement solved the problem.
★★★★★November 6, 2023
Perfect fit
★★★★★August 9, 2019
Cheaper than oem
Spent about half of what it would have originally cost for these two O2 sensors plus install.
Showing 1–4 of 4 reviews
Customer Q&A
Got a question about this part? Post it and get answers from our team.
DENNISAugust 14, 2024
HOW MANY OXYGEN SENSORS ON NISSAN QUEST S?
Great!!
Isaiah · September 4, 2024
SoniaJuly 13, 2023
Do I need 1 or 2 oxygen sensors for my 2013 nissan altima 3.5sl v6 front wheel drive?
There should be (2). A upstream sensor and a down stream.
Takeria · July 17, 2023
JeremyJanuary 8, 2020
Is this two separate sensors or one that fits both upstream and downstream?
This is one oxygen sensor. This can fit upstream or downstream location depending on which vehicle you have. Please check the 'Vehicle Fit' tab on the listing and it will show you which location it fits for each vehicle. You can also reply to this and let us know the year/make/model, engine size, and if it has AWD or FWD and we will be happy to check to see what it fits. Thank you for the inquiry!
Andra · January 8, 2020
Showing 1–3 of 3 questions
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Select Your Vehicle
Specify your vehicle's year, make and model to guarantee fit.
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.
