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Part Details
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Product Features
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?
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.
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.
Is my Car a California or Federal Emissions Vehicle
Created on: 2017-05-12
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Hi, I'm Mike from 1A Auto. We've been selling auto parts for over 30 years. We're dedicated to delivering quality auto parts, expert customer service, fast and free shipping, all backed by our 100% satisfaction guarantee. Visit us at 1AAuto.com, your trusted source for quality auto parts.
Determining whether or not your vehicle is a California emissions or a federal emissions vehicle is pretty straightforward. To do this, you'll want to locate your catalyst sticker under the hood of your vehicle. It'll either be actually on the bottom side of the hood, most GM vehicles have it on the air box, and other vehicles may have it along your radiator support at the front of the engine bay.
All you need to do is see, "This vehicle conforms to California regulations." That means that this vehicle is a California emissions car. Just because you're not in California or are in California doesn't necessarily mean your vehicle will be one way or the other.
Now, our F150 has it down here on the radiator's support, right at the front of the engine bay and you can see here, "This vehicle conforms to US EPA regulations." This means that this vehicle is a federal emissions.
Now, here we have two things that are a little different. Our catalyst is located on the vehicle's air box and this vehicle conforms to US EPA regulations and California regulations. If it conforms to both federal and California emissions, it's considered a California emissions vehicle.
Thanks for watching. Visit us at 1AAuto.com for quality auto parts, fast and free shipping, and the best customer service in the industry.
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Hi, I’m Mike from 1A Auto. We’ve been selling auto parts for over 30 years!
Remove the downstream O2 sensor. I'm going to follow the wire up here and unplug it from the connector. There's a white part on the connector, and I'm going to push in to unlock it. Pull the gray part out. Now I can work on getting it out of the exhaust. Spray some rust penetrant in here. The exhaust is pretty cool. It's a 22 millimeter, so I'm going to slide the box end over the connector and down. There's actually enough space to get a wrench in here, so maybe use a spark plug socket. Give a good pull. Once it breaks free, I'll just unthread it from the exhaust.
And replace the sensor. This O2 sensor is fine. We're going to reuse it. If you were replacing the exhaust, you could take it out and put it back in. But I'm just going to put a little bit of copper anti-seize compound and then reinstall it. I'll wipe off the extra rust penetrant so it doesn't get smelly when the exhaust heats up. And install our sensor. Get it lined up. Just thread it in by hand. Put the box end through the connector. Tighten it down. Just want to feel that gasket squish a little bit. That's installed. The final step: go up, plug it back into the connector. It clicks. It locks into place.
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Hi, I'm Mike 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 remove and install the forward oxygen sensor. This is a 1998 Toyota Camry with 2.2L 4-cylinder engine. The only items you'll need are an O2 sensor socket which is available at 1AAuto.com, a ratchet, and a torque wrench.
Open the hood and secure the hood prop. Locate your up-stream O2 sensor and the connector. Squeeze the tab in, remove the electrical connector, undo the keeper to the wire, and allow it to hang. We'll be using our O2 sensor socket, available from 1AAuto.com. If you don't have one, you can purchase one from our website or use a 22mm wrench.
Install your O2 sensor socket over the sensor. We're using a 3/8" drive ratchet on ours. Break the sensor loose and remove it from the exhaust. If you're reusing the sensor, be sure that the wire for the pigtail doesn't get caught anywhere and tear.
Once the sensor's loose, you can finish removing it by hand. Start the sensor in by hand, into the exhaust, then using your O2 sensor socket, tighten the sensor down. Be sure to watch for the harness to make sure it doesn't get caught and tear any of the wires. Torque the sensor to 32 foot-pounds.
Reinstall the connector. Make sure that it clicks in and locks fully. Now, we'll use this retainer to hang the wire off the upper radiator hose. It's got all the teeth that lock together. Tighten it up.
To remove it, just release the tabs.
Reinstall the retainer to hang the sensor wires form the upper radiator hose.
Thanks for tuning in. We hope this video helped you out. Next time you need parts for your car, please visit 1AAuto.com. Also check out our other helpful how-to and diagnosis videos.
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Hi, I'm Mike from 1A Auto. We've been selling auto parts for over 30 years. We're dedicated to delivering quality auto parts, expert customer service, fast and free shipping, all backed by our 100% satisfaction guarantee. Visit us at 1AAuto.com, your trusted source for quality auto parts.
In this video I have a couple of oxygen sensors with me. While there are some aesthetic differences here, the wire lengths are a little different, the actual body and tip of the sensor are a little different, the threads and gasket are the same, and on the other end the connections are actually the same. I can plug these into either position on our vehicle. But if I had to ask you which one's upstream and which one's downstream, you probably can't tell just from looking at them. That's true of most oxygen sensors. The way you determine whether or not an O2 sensor is upstream or downstream is all done visually.
Your oxygen sensor position can be determined relative to your catalytic convertor. As the name suggests, upstream sensors will be located upstream or ahead of, in front of, above, closer to the engine than your catalytic convertors. This means that they see the exhaust gasses first. They then go through the catalytic convertor and to the downstream oxygen sensor, which will either be located in the catalytic convertor like our vehicle here, or after the catalytic convertor to monitor the gasses coming out of the cat and make sure that it's being efficient relative to the readings of the upstream O2 sensor.
The other determination you need to make is bank one versus bank two. Determining which bank is which can be done by looking at a picture of your vehicle's firing order. Whichever bank contains cylinder one is going to be bank one, and the other one, regardless of whether or not cylinder two is in it, is going to be bank two by default. These banks are true of V engines like V8s, V6s, and flat engines like Porsches and Subarus that have individual banks.
On inline four-cylinder engines, as long as they have one exhaust manifold like a Jeep four-liter or a four-cylinder Honda engine, you'll only have one bank with an upstream and downstream O2 sensor. There will be no bank two on the engine.
On our vehicle here, this is the passenger side, which we've already determined from the firing order is bank one. We have our upstream sensor here closest to the engine ahead of the cat. Then we have our downstream or sensor two here inside of the catalytic convertor. This could also be located somewhere after the cat. Here I have my two sensors for the vehicle. While they are aesthetically different, we can now tell this is my upstream sensor because it looks just like the upstream sensor I have up there. This is my downstream sensor. Now that we know which one's which, we can order the right part, correct the problem, and fix you up right.
Thanks for watching. Visit us at 1AAuto.com for quality auto parts, fast and free shipping, and the best customer service in the industry.
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