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  • Denso 234-9011 Air Fuel Ratio Sensor
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Denso 234-9011 Air Fuel Ratio Sensor

by Denso
82 customer reviews
| 4 answered questions

List Price: $162.05
Price: $99.75 Free Prime shipping when in stock
You Save: $62.30 (38%)
Usually ships within 3 to 5 days.
Ships from and sold by Amazon.com exclusively for Prime members. Details
  • Manufactured to detect the amount of exhaust gas air fuel ratio
  • Constructed from durable material
  • Features zirconia solid electrolyte
  • Highly accurate
  • Easy installation
See more product details
59 new from $99.75
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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Frequently Bought Together

Denso 234-9011 Air Fuel Ratio Sensor + Powerbuilt 648691 Oxygen Sensor Offset Puller + Permatex 81343 Anti-Seize Lubricant, 1 oz. Tube
Buy the selected items together

Product Information

Technical Details
BrandDenso
Product Dimensions6 x 2.2 x 1.9 inches
Item model number234-9011
Exterior Ready To Paint
Manufacturer Part Number234-9011
OEM Part Number 234-9011
Position Front
  
Additional Information
ASINB000C5YD1A
Best Sellers Rank #52,982 in Automotive (See top 100)
Shipping Weight4.8 ounces (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 AvailableJanuary 2, 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 Air and Fuel Ratio sensor is designed to detect the amount of the exhaust gas air and fuel ratio. It is constructed from durable material that is corrosion and abrasion resistant. This sensor features zirconia solid electrolyte integrated with alumina heater substrate which precicely controls the amount of oxygen concentration that flows into the diffusion layer to limit current flow. This sensor can easily be installed and ensures longevity.


Customer Questions & Answers

Customer Reviews

Most Helpful Customer Reviews

10 of 10 people found the following review helpful By David Wayland Dong on September 26, 2011
Verified Purchase
This is the OEM front oxygen sensor for an '02 Subaru WRX (among other models) at a really good price. Plugs right into wire harness.
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3 of 3 people found the following review helpful By BReal on October 30, 2013
Verified Purchase
I needed a new O2 sensor for bank 1 (pre turbo) on my 04 WRX, The brick & mortar shops wanted over $200 for this part, WELL above what I paid for the part + overnight shipping on Amazon! When I removed the old part from my car, lo and behold, it was the EXACT same part number as I had purchased on Amazon, so while it's not advertised as OEM, it is the same exact part as was put on my car in the factory. Installation took about 30 minutes.
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3 of 3 people found the following review helpful By scooter4483 on September 18, 2011
Verified Purchase
After having this for a month on my 05 wrx, the sensor is doing the job. No CEL anymore. I've read that this is a direct replacement on the car without the markup. If subaru puts its name on it, its $165 approximately. I strongly recommend this as a replacement. My stock sensor failed me after 106k miles. Hopefully this one will last just as long.
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2 of 2 people found the following review helpful By ThaCooLoser on December 4, 2013
Verified Purchase
Perfect fit. Took my check engine light off like I expected it to. Supposedly better than the oem and I believe it. Price was cheaper than any sauto store around here. Amazon has been my best source for shopping online. Thanks
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2 of 2 people found the following review helpful By JF on November 1, 2013
Verified Purchase
Threw P0031, new sensor fixed it. The dealer will sell you this DENSO sensor with Subaru written on it and charge twice as much.
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1 of 1 people found the following review helpful By J. David Purcell on September 19, 2014
Fits my 2005 Saab 9-2x Aero (Saabaru/WRX clone) perfectly, and after ECU re-flash to clear the CEL the car is good to go. Acceleration is much more smooth as is the idle - though gas mileage appears to be down. This may be a result, howerver, of the fact that I felt more comfortable running WOT once the flashy lights were all extinguished... (0_o)
Removal/replacement of the part is much easier with a 22 mm closed spanner, you don't even need a special O2 sensor socket or anything - just thread the wire through the spanner and apply some reasonable pressure and it should walk right out (after hosing the thing down with PB Blaster for 45 min or so of course...). Pretty much follow the instructions you can find on YouTube, but swap out the wrench/socket/channel lock/vice grip for a 22 mm closed spanner.
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1 of 1 people found the following review helpful By Dakota J. Doerr on March 20, 2014
Verified Purchase
the best part about this sensor is its about 70 dollars cheaper since it doesnt say subaru on it,im all for saving money! on my 04 wrx i had a feeling my upstream sensor was going bad i was seeing about 200 miles to a tank where i used to get 300 prior,i had checked for boost leaks and fuel leaks prior,and finally determined this sensor was bad

i had no check engine light,but i replaced this sensor and my gas mileage shot up to 300 a tank,very satisfied great pricing great denso quality
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1 of 1 people found the following review helpful By Chris Knight on November 13, 2012
Verified Purchase
Replaced bad front O2 (air flow) sensor on a 2002 Subaru WRX Wagon. Total repair time 1 hour and I'm not a real mechanic. This sensor fit perfectly and now the check engine light is finally off. Much cheaper than the OEM sensor or dealer repair.
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Want to discover more products? Check out these pages to see more: front exhaust sensor, o2 sensor, subaru wrx oem parts, best electrolyte replacement, subaru impreza wrx 2002 exhaust