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
Toyota Highlander V6 3.0L Downstream Front O2 Oxygen Sensor TRQ OSA60640
1993-1998
Toyota
Supra
Toyota Supra L6 3.0L Turbo Downstream O2 Oxygen Sensor TRQ OSA60640
1993-1995
Toyota
Supra
Toyota Supra L6 3.0L Naturally Aspirated with California Emissions Downstream Cylinders 1-3 O2 Oxygen Sensor TRQ OSA60640
1996-1997
Toyota
Supra
Toyota Supra L6 3.0L Naturally Aspirated Downstream Cylinders 1-3 O2 Oxygen Sensor TRQ OSA60640
Part Interchange
Brand Label
Part Number
Walker Products
250-24277
Toyota
8946548010
Standard Motor Products
SG1841
Omnicraft
QDY88
Standard Motor Products
SG793
ACDelco
213-3031
Wells
SU4832
Bosch
13902
Standard Motor Products
SG671
Delphi
ES20202
DENSO
234-4163
DENSO
234-4215
Niehoff
FE80369
Toyota
8946519695
Wells
SU4943
DENSO
DOX0227
Toyota
8946514160
Toyota
8946519595
Toyota
8946549075
Bosch
13338
Wells
SU4829
Beck/Arnley
156-4222
Niehoff
FE80076
Toyota
8946514190
OMNIPARTS
19060242
Niehoff
FE8768
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.
OSA60640
In Stock
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Customer Q&A
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gerardApril 20, 2026
I purchased a O2 sensor for a 2003 Toyota Highlander downstream. Bolt on style. Not screw in style. The one in the picture does not have a rubber boot on it. This one is supposed to go through the body into the cab of the vehicle. That's where the bo
We apologize for the inconvenience caused but see you have contacted our customer service department and a resolution was provided. Please let us know if we can be of further assistance.
Nick · April 20, 2026
Showing 1–1 of 1 question
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