Replaces

1994 Toyota 4Runner L4 2.4L Upstream Bank 1 Sensor 1 O2 Oxygen Sensor TRQ OSA61171

$ 15.62

$49.95

69% OFF

$49.95

69% OFF

FREE SAME DAY SHIPPING

Read 21 REVIEWS

OSA61171

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O2 Oxygen Sensor with Install Tool

$25.80

Description

Vehicle Fit

Warranty & Shipping

How-To & Tools

Part Details

Wrench Size:
22 mm
22mm
Universal Or Specific Fit: Specific
Thread Diameter:
18 mm
0.71 in
Wire Quantity: 4
Connector Gender: Male
Overall Length:
14.96 in
380 mm
Thread Size: M18x1.5-6e
Connector Shape: Square
Mounting Type: Flange Mount
Terminal Gender: Male
Sensor Type: Heated
Band Type: Narrow
Wiring Harness Length:
10.08 in
256 mm
Sensor Design: Thimble
Terminal Quantity: 4
Grade Type: Regular

Specification

Oxygen Sensor Location

Upstream

Engine Displacement (Metric)

L4 2.4L

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:

proposition 65 icon 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.

Product Reviews

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4.48/ 5.0

Purchasing Oxygen sensors

stephen

1A stands behind their products. The service is fast and the Customer Service is excellent. 5 stars!

Perfect

Pain in the assignment to change but engine lights out. Off for emmision test.

, arrived fast fit good works well thank you

The price of the product was very good the product fit well works good have no problems thank you very much and be looking forward to doing business with you again God bless bye

Part arrived sooner than expected and was a perfect fit.

The oxygen sensor was a perfect fit for the truck. Didn't require much in the way of instructions to remove and replace it with only two nuts and the connector to contend with. One thing I would suggest is either providing the nuts or suggest them for purchase with the part. The truck was purchased new in 2000 and anything connected to an exhaust system should never last that long. Took a couple of squirts of nut buster and a pair of small vice grips to remove what used to be the nuts securing the part. Not carried by local auto parts stores so there is a need to offer these, in my opinion! After installation, the check engine light was extinguished by clearing codes and has not returned after driving 400 miles!

First one was no good

Rick

First one was defective. 1A auto sent a replacement and so far so good. Only been 2 days though.

Works good.

Tara

Used it in a 5VZ swap to get check engine light off. Worked the first time..

Fast and easy

02 sensor for Toyota Tundra: Part fit perfectly with no problems. Shipping was fast and reliable. I will definitely use 1A Auto again!

Excellent service and great part

Excellent customer service for the min I order this product. Shipping was quick and the product was exactly what they described. This was a very easy plug and play installation.

02 sensor 1997 4 runner

Sean

Came on time . And perfect fit and woks well , will buy again

Direct match O2 sensor

Rob

Replaced my catalytic converter and figured I should replace the downstream O2 sensor as well. After a hopping around and found this one to be the best price and availability, Id also read about many other online options having problems with the pigtail connections not being exact. This one worked perfectly, direct plug and play couldnt have been easier.

O2 Sensor success

Jenny

My 03 Toyota Sequoia was throwing a downstream O2 sensor code and I didnt want to deal with the hassle of scheduling an appointment with a mechanic. I watched the applicable 1A Auto video on YouTube, ordered the part, and replaced it myself. It couldnt have been easier. The replacement sensor fit perfectly and the truck is running great again. Thanks so much for the fast shipping and quality product! It was my first 1A purchase but it wont be my last.

luis

Good fit and function. Shipping was adequate delivered within reasonable time

Quality Product

tommy

Quality Product A Fair Price and Fast Shipping. Fits like a Glove. Thanks 1A

Works As It Should

I have purchased from 1A Auto before and found their prices and shipping to be the best around. Part looked and works just like the Big name shops and their national brands.

the fit was perfect.

the fit was perfect and the online videos were a great help on how to replace it.

works well

Fred

works. no c/e light.

Good Value

Stuart

Works just the way it should

IT WORKED!

Garrett

EASY INSTALL, DONT FORGET TO TIGHTEN THE SENSOR INTO THE BRACKET (ITS THREADED) BEFORE YOU INSTALL ONTO EXHAUST SYSTEM, ITS MUCH HARDER TO TIGHTEN ONCE ITS MOUNTED. MY CHECK ENGINE LIGHT IS STILL OFF AFTER 600 MILES AND TONS OF CYCLES. SO I THINK THIS WAS THE CULPRET! LOL

Will not fit first GEN tundras. Prepare to solder wires.

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Nick

First of all, 1a auto did an fantastic job helping me recover a lost package. Their customer service is excellent! That being said, this O2 sensor does not fit the 2000 tundra as I was led to believe. The O2 sensor itself has a flange fitting that does not fit in the upstream sensor position (bank 1, sensor 1) I was able to remove the flange for a proper fit of the O2 sensor into the exhaust system. I then Cut the factory connector off the old O2 sensor and soldered the wires to the new O2 sensor. I installed the new sensor, cleared the code and everything seems to be working well.

Do not buy

Brian

Garbage. Stopped working within a week of installing. Buy quality parts not cheap TRQ parts. Total waste of money and outside of the return window

Vic

Oxygen sensor fit perfectly and worked perfectly! Will use 1A for all my auto part needs!

Customer Q&A

Will this fit upstream 98 tacoma with manual transmission?

November 30, 2016

Donald S

December 1, 2016

Brian F

January 13, 2019

T H

It worked great on my 96 with manual transmission!

August 19, 2019

Hans G

Can this part be used in both the upstream and downstream locations for my 93 Toyota RWD 22re pickup?

March 9, 2020

F E

YES IT WILL FIT BOTH UP AND DOWN BUT IT DEPEND'S ON THE COMPUTER IF IT WILL READ IT PROPERLY.

March 9, 2020

Alex R

This item will only be able to fit for your downstream with your vehicle information. Please do not hesitate to contact us with any further questions.

March 9, 2020

Emma F

Does this come w nuts if not what size do they need I dont have any 2002 Toyota Tundra v8?

August 19, 2021

Jason S

New hardware is not included with this item. You may be able to reuse your original hardware if it is in good condition.

August 20, 2021

Emma F