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 Chromium (Hexavalent Compounds), which is 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 1999-2004.
Fits these Makes
Select vehicle
Year
Make
Model
Description
1999
Toyota
4Runner
Toyota 4Runner V6 3.4L with California Emissions Automatic Transmission Upstream O2 Oxygen Sensor TRQ OSA60694
2000
Toyota
4Runner
Toyota 4Runner L4 2.7L with California Emissions Manual Transmission Upstream Bank 1 Sensor 1 O2 Oxygen Sensor TRQ OSA60694
2000
Toyota
4Runner
Toyota 4Runner V6 3.4L with California Emissions Upstream O2 Oxygen Sensor TRQ OSA60694
2001-2002
Toyota
4Runner
Toyota 4Runner V6 3.4L Upstream O2 Oxygen Sensor TRQ OSA60694
2000
Toyota
Tacoma
Toyota Tacoma V6 3.4L with California Emissions Automatic Transmission Upstream O2 Oxygen Sensor TRQ OSA60694
2000
Toyota
Tacoma
Toyota Tacoma L4 2.7L with California Emissions Upstream Bank 1 Sensor 1 O2 Oxygen Sensor TRQ OSA60694
2001-2004
Toyota
Tacoma
Toyota Tacoma L4 2.7L Upstream Bank 1 Sensor 1 O2 Oxygen Sensor TRQ OSA60694
2001-2004
Toyota
Tacoma
Toyota Tacoma L4 2.4L Upstream Bank 1 Sensor 1 O2 Oxygen Sensor TRQ OSA60694
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.
OSA60694
In Stock
Product Reviews
4.6/ 5
★★★★★★★★★★
14 reviews
5★
86%
4★
7%
3★
0%
2★
0%
1★
7%
★★★★★August 20, 2026
does not work
When installed immediately caused multiple codes and did not function as described
Thanks for the review! We are sorry you are having this issue. All the parts we carry are guaranteed to fit and function like the factory parts. Please contact us and we will be happy to set up a replacement for you. Thank you!
1A AutoAugust 20, 2026
★★★★★June 11, 2026
02 sensor works perfectly
Great product, and great how do videos.
★★★★★May 5, 2026
O2 Sensor
Fits and works perfectly in my 2000 Toyota Tundra 6 cylinder truck.
★★★★★April 17, 2026
Perfect Fit to Pass Emission Test
Very satisfied, helped me pass my Emission Inspection for my 25 year old Toyota Tundra. Very easy to install.
★★★★★January 9, 2026
1A can be relied on to try and satisfy its customers with live customer service and item returns.
All of the 1A parts I have purchased were good a good fit for my 2001 4x4 Tacoma.
There was a delivery issue once but, it was resolved.
★★★★★September 21, 2024
stopped O2 sensor error codes
About half the price of OEM and is working fine
★★★★★April 22, 2024
Great quality
Works as good as OEM high quality
★★★★★April 7, 2024
I recommend 100% for shopping
★★★★★March 26, 2024
The price is great and I'm having trouble getting warranty but I'm pretty sure they will take care of it
★★★★★February 15, 2024
I love ?? One a auto
Everything went smooth. Put it on my doorstep saved over 50% class act one A Auto been referring everybody I know
Showing 1–10 of 14 reviews
Customer Q&A
Got a question about this part? Post it and get answers from our team.
OmarMarch 14, 2024
You oxigen sensor fit on tundra 3.4L V6 2002 manual or automatic transmission?
The O 2 sensor it's not working properly it's to lazy how do I get my warranty
Martin · April 16, 2024
MichaelDecember 22, 2023
will this fit a 2001 tundra and do i need 2?
Thank you for your inquiry! Can you please provide us with your 17-digit VIN number?
Jean · December 23, 2023
DianaJanuary 28, 2023
buenas tardes quisiera saber si ?son 2 sensores o solo 1 sensor? gracias
This is only one Oxygen Sensor. If you need a Pair, 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.
Jean · January 30, 2023
Showing 1–3 of 3 questions
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