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Denso 234-4261 Oxygen Sensor

by Denso
| 8 answered questions

List Price: $166.57
Price: $48.97 & FREE Shipping. Details
You Save: $117.60 (71%)
Only 11 left in stock.
Ships from and sold by Amazon.com.
  • Designed to detect the amount of oxygen in the exhaust system
  • Constructed from high quality material
  • Features double protection layer, aluminum oxide trap layer, PTFE filter and stainless steel housing
  • Manufactured with precision to meet OE standards
  • Easy installation
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58 new from $48.84 1 used from $39.18
Note: Denso partners with other manufacturers to supply the parts your car was originally built with. This product is in a Denso package, however the part may have been manufactured by an independent Denso supplier.

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$48.97 & FREE Shipping. Details Only 11 left in stock. Ships from and sold by Amazon.com.

Frequently Bought Together

Denso 234-4261 Oxygen Sensor + Denso 234-9002 Air Fuel Ratio Sensor
Price for both: $139.25

One of these items ships sooner than the other.

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Product Information

Technical Details
BrandDenso
Item Weight4.2 ounces
Product Dimensions5.8 x 1.9 x 2.2 inches
Item model number234-4261
Exterior Ready To Paint
Manufacturer Part Number234-4261
  
Additional Information
ASINB0016NBBQW
Best Sellers Rank #41,220 in Automotive (See top 100)
Shipping Weight1.9 pounds (View shipping rates and policies)
Domestic Shipping Currently, item can be shipped only within the U.S. and to APO/FPO addresses. For APO/FPO shipments, please check with the manufacturer regarding warranty and support issues.
International Shipping This item is not eligible for international shipping. Learn More
Date First AvailableOctober 10, 2007
  
Warranty & Support
Warranty, Parts: Parts

Manufacturer’s warranty can be requested from customer service. Click here to make a request to customer service.
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Product Description

Denso Oxygen Sensor is designed to detect the amount of oxygen in the exhaust stream. It is constructed from high quality stainless steel, porous polytetrafluoroethylene, fluorine rubber, aluminum oxide, high-grade platinum and ceramics. This Sensor features double protection layer, aluminum oxide trap layer, porous PTFE filter and stainless steel housing. It is manufactured with precision to meet OE standards. This oxygen sensor can be installed easily and ensures longevity.

Customer Questions & Answers

Customer Reviews

4.9 out of 5 stars
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Most Helpful Customer Reviews

Verified Purchase
My SUV (2002 4Runner SR5 V6) got the check engine light at approximately 126K miles. The code was P0420. The original Toyota O2 sensor (the one located after the catalytic converters)was removed and replaced with a new Denso oxygen sensor(p/n 234-4261, purchased from Amazon.com). After installing the sensor, the check engine light turned off by itself after driving approximately 60 miles. The new Denso oxygen sensor is identical to the original Toyota oxygen sensor. The part arrived sealed in a plastic bag along with a small tube of anti-seize lubricant. Amazon.com had the best deal compared to other vendors (The dealership wanted around $160+ for the same part).
I also replaced the air/fuel sensor (the one located in front of the catalytic converters) a while back around 85K miles when the Check Engine Light lit up(Code P1135). The Check Engine light also turned off by itself after the new A/F sensor was installed. Amazon.com also has the best price on the A/F sensor. I'm so glad I don't have to go to the Toyota dealership for parts again. Thanks to Amazon.com.
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4 of 4 people found the following review helpful By Drew on February 8, 2012
Verified Purchase
Nearly same vehicle as earlier review -- 2002 4Runner SR5 V6, 124K miles. Check engine light appeared and code was determined to be P0420. Two mechanics said the oxygen sensor was fine and that it was most likely a bad cat ($$$$), but I figured it was worth giving it a shot with a new sensor first.

Check engine light went out on its own approximately 220 miles after replacing the oxygen sensor. This was after several short trips over a period of five days, so that may be why mine took longer to reset.

I am not mechanically inclined but this was a very easy job, especially with a socket especially for oxygen sensors (22mm with a slot in the side for the sensor wiring). Independent mechanic wanted $400 to do it; was able to do it myself for less than $60 instead. Just be sure to stick with the Denso brand (vs. Bosch, etc.) for this particular part.
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2 of 2 people found the following review helpful By TechOnWheels on April 20, 2013
Verified Purchase
I installed this in a customer's 2001 Toyota 4Runner. This fixed her PO420 catalyst system efficiency below threshold powertrain code problem. No more check engine lights! This customer had been told by other Automotive Repair Shops that she needed her expensive catalytic converters replaced. Not so!!!!!!!! I have a "Happy, Happy, Happy" loyal customer!!!!!
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2 of 2 people found the following review helpful By Daniel Bond on February 10, 2015
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Like other reviews have stated, this sensor fits flawlessly. It remedied the P0420 on my 2001 4Runner. Glad I tried this instead of listening to the shop that told me I HAD to replace the catalytic converter to the tune of over a grand!
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1 of 1 people found the following review helpful By I do tons of research b4 buying on May 19, 2014
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I had the code thrown 2x and I used the "Autel MaxiScan MS300 CAN Diagnostic Scan Tool" also sold here on Amazon to reset/clear the code. After 400 ish miles, the engine light, VSC Trac, and Trac off lights would come on. I waited until the 2nd time it did it THEN I bought this and had a local mechanic install it for $34 because I didn't have any tools. I only bought 1 because the car only needs one. You have to install it on the very last oxygen sensor you see
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1 of 1 people found the following review helpful By Vernon Lefebre on March 21, 2013
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I bought the four O2 sensors for a 2005 Camry 6 cylinder. They were a perfect fit and extinguished the check engine light. What more can you ask?
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1 of 1 people found the following review helpful By Vincent Roman on May 14, 2013
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The guys on the Toyota forum insist that the Denso is the right replacement for our cars. The Bosch is cheaper, but apparently is not compatible with the Toyotas. It was an easy install. the harnesses and the hardware was a direct fit for my 2002 4Runner.
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Verified Purchase
I bought this after reviewing many other feedback inputs from many different sites. After checking my exhaust (by holding a book at the end of my muffler) to see if there was a leak, I checked the general condition of the components in/around the cat. I didn't see any leaks and my cat didn't appear out of the ordinary (excessive/abnormal damage); the general amount of rust looked ordinary, as it is designed to do so in certain areas. It basically came down to troubleshooting all other cheaper fixes: oil, oil filter, fuel filter, air filter, spark plugs, and wires (all of which was changed within the last 3 months due to routine maintenance). I didn't want to spend the $120-$180 quoted for this O2 sensor at the local parts stores (Autozone, Advance, O'Reillly), so I checked online. In someone else's previous review, they explained that this was the OE, direct fit part for the same code my 4Runner threw. I knew the that it was my next best bet at the best price $86 and some change. The sensor was real easy to install and came with a small amount of needed anti-seize grease (saved me a trip to the store). The only challenge I had (which was dealt with in 10 extra minutes) was the rusted sensor I had to remove. The sensor I bought was the one after the cat (downstream, I think) and the check engine light went away less than 50 miles or so of driving. It was about the third time I started my car did the light check engine light go away. Great product overall.
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Denso 234-4261 Oxygen Sensor
This item: Denso 234-4261 Oxygen Sensor
Price: $48.97
Ships from and sold by Amazon.com