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Subaru Impreza Replacement Air Fuel Ratio Sensor Information

Read Reviews for Subaru Impreza Air Fuel Ratio Sensor -
4.9 stars - (13 Reviews)
Subaru Impreza Air Fuel Ratio Sensor Reviews
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A classic Subaru vehicle is a thrill to control and has the energy to emit continual wonder and fascination. For consumers who place necessary emphasis on long lasting service life and innovation, Subaru can be trusted to deliver. Small, sensible cars like your efficient Subaru Impreza were intended to be maintained in the best possible condition in order to continue showing good levels of economy. Fuel efficiency comes with some expense, because your Subaru Impreza requires top quality auto parts to operate at top mileage. If a problem develops or a system ought to be replaced, don't economize with a second-rate component. That Subaru Impreza needs genuine OEM and aftermarket auto parts to serve at the highest efficiency. Your Subaru was made with the highest quality and expertise; it ought to have new replacement parts with the same high level of quality. Your air fuel ratio sensor works at its best when it works in all vehicles on average even though your vehicle will run without it. A Subaru Impreza Air Fuel Ratio Sensor measures the air-fuel ratios in the engine, keeping them within parameters for optimum operation. Whenever your car's air-fuel mixture is not rich enough, inadequate engine function will be the result; at the same time, a too-rich ratio can lead to damage to the engine and excessive pollution from your vehicle's tail pipe. Support your car or truck's systems by only installing the most reliable high quality parts. Auto enthusiasts who enjoy performance vehicles know that absolutely nothing is more important than putting in the highest quality aftermarket parts for your vehicle. Your Subaru is a lifestyle choice that you must enhance with the newest parts and equipment. Our top-notch aftermarket accessories are a solid investment for your automobile. Should you have any questions about our parts, our customer service team members are available via e-mail or telephone - just our regular outstanding commitment to the customer!


They are available for the following Subaru Impreza years: 2014, 2013, 2012, 2011, 2010, 2009, 2008, 2007, 2006, 2005, 2004, 2003, 2002, 2001, 2000, 1999, 1997, 14, 13, 12, 11, 10, 09, 08, 07, 06, 05, 04, 03, 02, 01, 00, 99, 97. This part is also sometimes called Subaru Impreza Wide Range Air Fuel Sensors. We stock air fuel ratio sensor parts for most Subaru models including Outback, Forester, Legacy, Baja, B9 Tribeca and Tribeca.

We stock these Air Fuel Ratio Sensor brands for the Subaru Impreza: Denso, Walker Products and NGK.


Air Fuel Ratio Sensor for Subaru Impreza - Partsgeek
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Denso 234-9011
Air Fuel Ratio Sensor
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Our List Price: $123.01
with FREE Shipping
(>35) In Stock
Product SKU: 234-9011
Product Note: OE Style -- DENSO is the O.E. Manufacturer / Air Fuel Ratio Sensor
Features:
  • Manufactured to detect the amount of exhaust gas air fuel ratio
  • Constructed from durable material
  • Features zirconia solid electrolyte
  • Highly accurate
  • Easy installation
Position of Product: Upstream
Inventory: In Stock
Condition: New

Shipping Options:
Free Ground Shipping
Additional Fitment Information: Catalog: B
Vehicle Engine Transmission
• 2002 (02) Subaru Impreza 2.0L H4  Automatic 

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Denso 234-9011
Air Fuel Ratio Sensor
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Our List Price: $123.01
with FREE Shipping
(>35) In Stock
Product SKU: 234-9011
Product Note: OE Style -- DENSO is the O.E. Manufacturer / Air Fuel Ratio Sensor
Features:
  • Manufactured to detect the amount of exhaust gas air fuel ratio
  • Constructed from durable material
  • Features zirconia solid electrolyte
  • Highly accurate
  • Easy installation
Position of Product: Upstream
Inventory: In Stock
Condition: New

Shipping Options:
Free Ground Shipping
Additional Fitment Information: Catalog: B
Vehicle Engine
• 2004 (04) Subaru Impreza 2.0L H4 

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Denso 234-9120
Air Fuel Ratio Sensor
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Our List Price: $97.63
(>35) In Stock
Product SKU: 234-9120
Product Note: OE Style -- DENSO is the O.E. Manufacturer / Air Fuel Ratio Sensor
Position of Product: Upstream
Inventory: In Stock
Condition: New

Shipping Options:
Ground
Additional Fitment Information: Catalog: B
Vehicle Engine
• 2005 (05) Subaru Impreza 2.5L H4 Turbocharged 

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Denso 234-9011
Air Fuel Ratio Sensor
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Our List Price: $123.01
with FREE Shipping
(>35) In Stock
Product SKU: 234-9011
Product Note: OE Style -- DENSO is the O.E. Manufacturer / Air Fuel Ratio Sensor
Features:
  • Manufactured to detect the amount of exhaust gas air fuel ratio
  • Constructed from durable material
  • Features zirconia solid electrolyte
  • Highly accurate
  • Easy installation
Position of Product: Upstream
Inventory: In Stock
Condition: New

Shipping Options:
Free Ground Shipping
Additional Fitment Information: Catalog: B
Vehicle Engine
• 2003 (03) Subaru Impreza 2.0L H4 

Click to Enlarge
Denso 234-9120
Air Fuel Ratio Sensor
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Loading Reviews...
Our List Price: $97.63
(>35) In Stock
Product SKU: 234-9120
Product Note: OE Style -- DENSO is the O.E. Manufacturer / Air Fuel Ratio Sensor
Position of Product: Upstream
Inventory: In Stock
Condition: New

Shipping Options:
Ground
Additional Fitment Information: Catalog: B
Vehicle Engine
• 2006 (06) Subaru Impreza 2.5L H4 Turbocharged 

Click to Enlarge
Denso 234-9120
Air Fuel Ratio Sensor
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Loading Reviews...
Our List Price: $97.63
(>35) In Stock
Product SKU: 234-9120
Product Note: OE Style -- DENSO is the O.E. Manufacturer / Air Fuel Ratio Sensor
Position of Product: Upstream
Inventory: In Stock
Condition: New

Shipping Options:
Ground
Additional Fitment Information: Catalog: B
Vehicle Engine
• 2007 (07) Subaru Impreza 2.5L H4 Turbocharged 

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(Read reviews)
Product List Price:
$267.50
Our List Price: $181.69
with FREE Shipping
(24) In Stock
Product SKU: W0133-1602410
Position of Product: Front
Inventory: In Stock
Condition: New

Shipping Options:
Free Ground Shipping or (Overnight and 2-Day Shipping)
Additional Fitment Information: Catalog: A
Vehicle Engine
• 2002 (02) Subaru Impreza 2.0L H4 

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Denso 234-9122
Air Fuel Ratio Sensor
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Our List Price: $95.55
(>35) In Stock
Product SKU: 234-9122
Product Note: OE Style -- DENSO is the O.E. Manufacturer / Air Fuel Ratio Sensor
Position of Product: Upstream
Inventory: In Stock
Condition: New

Shipping Options:
Ground
Additional Fitment Information: Catalog: B
Vehicle Engine
• 2005 (05) Subaru Impreza 2.5L H4 Naturally Aspirated 

Click to Enlarge
Denso 234-9120
Air Fuel Ratio Sensor
Close
Loading Reviews...
Our List Price: $97.63
(>35) In Stock
Product SKU: 234-9120
Product Note: OE Style -- DENSO is the O.E. Manufacturer / Air Fuel Ratio Sensor
Position of Product: Upstream
Inventory: In Stock
Condition: New

Shipping Options:
Ground
Additional Fitment Information: Catalog: B
Vehicle Engine
• 2004 (04) Subaru Impreza 2.5L H4 Turbocharged 

Click to Enlarge
(Read reviews)
Our List Price: $97.63
(>35) In Stock
Product SKU: 234-9018
Product Note: OE Style -- DENSO is the O.E. Manufacturer / Air Fuel Ratio Sensor
Features:
  • Manufactured to detect the amount of exhaust gas air fuel ratio
  • Constructed from durable material
  • Features zirconia solid electrolyte
  • Highly accurate
  • Easy installation
Position of Product: Upstream
Inventory: In Stock
Condition: New

Shipping Options:
Ground
Additional Fitment Information: Catalog: B
Vehicle Engine
• 2000 (00) Subaru Impreza 2.2L H4 

Click to Enlarge
(Read reviews)
Our List Price: $97.63
(>35) In Stock
Product SKU: 234-9018
Product Note: OE Style -- Calif.; DENSO is the O.E. Manufacturer / Air Fuel Ratio Sensor
Features:
  • Manufactured to detect the amount of exhaust gas air fuel ratio
  • Constructed from durable material
  • Features zirconia solid electrolyte
  • Highly accurate
  • Easy installation
Position of Product: Upstream
Inventory: In Stock
Condition: New

Shipping Options:
Ground
Additional Fitment Information: Catalog: B
Vehicle Engine
• 1999 (99) Subaru Impreza 2.2L H4 

Click to Enlarge
Denso 234-9011
Air Fuel Ratio Sensor
Close
Loading Reviews...
Our List Price: $123.01
with FREE Shipping
(>35) In Stock
Product SKU: 234-9011
Product Note: OE Style -- DENSO is the O.E. Manufacturer / Air Fuel Ratio Sensor
Features:
  • Manufactured to detect the amount of exhaust gas air fuel ratio
  • Constructed from durable material
  • Features zirconia solid electrolyte
  • Highly accurate
  • Easy installation
Position of Product: Upstream
Inventory: In Stock
Condition: New

Shipping Options:
Free Ground Shipping
Additional Fitment Information: Catalog: B
Vehicle Engine
• 2005 (05) Subaru Impreza 2.0L H4 

Click to Enlarge
(Read reviews)
Product List Price:
$199.95
Our List Price: $138.44
(1) In Stock
Product SKU: W0133-1893930
Product Note: OE Connector
Detailed Note: May also be referred to as an Oxygen Sensor
Position of Product: Front
Inventory: In Stock
Condition: New

Shipping Options:
Ground, Overnight, 2 Day
Additional Fitment Information: Catalog: A
Vehicle Engine
• 2009 (09) Subaru Impreza EJ255 

Click to Enlarge
(Read reviews)
Product List Price:
$229.95
Our List Price: $134.26
(13) In Stock
Product SKU: W0133-1606141
Detailed Note: 4 Wire Square Plug
Position of Product: Front
Inventory: In Stock
Condition: New

Shipping Options:
Ground, Overnight, 2 Day
Additional Fitment Information: Catalog: A
Vehicle Engine
• 1999 (99) Subaru Impreza 2.2L H4 

Click to Enlarge
Denso 234-9015
Air Fuel Ratio Sensor
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Our List Price: $108.47
with FREE Shipping
(>35) In Stock
Product SKU: 234-9015
Product Note: OE Style -- DENSO is the O.E. Manufacturer / Air Fuel Ratio Sensor
Features:
  • Manufactured to detect the amount of exhaust gas air fuel ratio
  • Constructed from durable material
  • Features zirconia solid electrolyte
  • Highly accurate
  • Easy installation
Position of Product: Upstream
Inventory: In Stock
Condition: New

Shipping Options:
Free Ground Shipping
Additional Fitment Information: Catalog: B
Vehicle Engine
• 2003 (03) Subaru Impreza 2.5L H4 

Click to Enlarge
(Read reviews)
Our List Price: $188.04
with FREE Shipping

Product SKU: 24659
Product Note: OE Type 4-Wire A/F Sensor -- B1S1; OE Equivalent
Position of Product: Upstream
Condition: New

Shipping Options:
Free Ground Shipping
Additional Fitment Information: Catalog: H
Vehicle Engine
• 2005 (05) Subaru Impreza 2.0L H4 


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Research on Air Fuel Ratio Sensor for Subaru Impreza

The air fuel ratio sensor is slowly phasing out the traditional oxygen sensor. It utilizes more advanced technology and therefore facilitates more efficient air/ fuel ratio management. The air fuel ratio sensor operates continuously in a closed loop which makes it quite suitable for lean burn engines and gasoline direct fuel injection. The air fuel ratio sensors are mounted in the exhaust system before and after the catalytic converter. The sensors monitor the air fuel ratio of the vehicle exhaust and Subaru air fuel ratio sensor readings indicate if there is any problem, a precise signal is sent to the engine computer for real time adjustments.

Bad air fuel ratio sensor symptoms

One factor that could signal a problem with your Subaru Impreza air fuel ratio sensor is a decrease in fuel efficiency. The air fuel ratio sensor monitors the oxygen content in the exhaust system and sends the data to the engine for addition or subtraction of the fuel. If there is a problem with the sensors, wrong signals may be sent to the engine computer which may result to wastage of fuel even after driving for short distances

The other symptom that may signal a problem with the air fuel ratio sensor is a rough idle. The air fuel ratio sensors are very important in ensuring that that the air fuel mixture remains finely tuned. A bad air fuel ratio sensor can send wrong signals to the engine computer which may throw off the idle causing to fluctuate. In severe cases, the idle quality may be impacted to the point that the vehicle stalls.

Subaru air fuel ratio sensor replacement

Check out for signs that you could probably be experiencing an air/ fuel ratio sensor problem. Reduced engine performance, declined fuel economy, a rough idle as well as engine misfires are some of them. Air fuel ratio sensors can be found in the exhaust manifold downpipes before the catalytic converter or between the manifolds and the catalytic converter. If your Impreza air ratio sensor is malfunctioning, it will cost you about $300 to replace it.

Replacement Procedure For Your Air Fuel Ratio Sensor

You can first start by supporting your vehicle on jacks and locate the sensor or sensors. Disconnect electric connectors to the sensors. You can now remove the damaged sensor and replace it with a new one. Reinstall the electric connectors. Finish of by lowering your vehicle and clearing off codes from your computer system.

It may seem like more of an accessory, but the air fuel ratio sensor is quite an important component that improves your vehicles efficiency and performance. If it fails, the life of your catalytic converter which is also an expensive component may be cut short. Air fuel ratio sensors should typically be replaced between 60,000 to 90,000 miles. This will help you manage your vehicle's emissions as well as safeguard your engine and other components. Be sure to get yourself the best deals on the wrx rear o2 sensor, 2004 wrx o2 sensor as well as other air fuel ratio sensors from PartsGeek.com , your best online retailer for all automobile parts and accessories.



Some of our Customer Reviews
Very Satisfied
Reviewer: Air fuel ratio gauge

Sensor worked out great for me, easy install, wiring harness matched oem one perfectly

2004 Subaru Impreza Air Fuel Ratio Sensor

Very Satisfied
Reviewer: DIY from ME

Prompt service, good website and $100 cheaper than the dealer. Fits perfectly. What's not to like?

2009 Subaru Impreza Air Fuel Ratio Sensor

Very Satisfied
Reviewer: Great

Very impressed with this. And the ordering process was easy and was shipped immediately. No problems!

2002 Subaru Impreza Air Fuel Ratio Sensor

Very Satisfied
Reviewer: kevin

fast delivery, quality part. beats the dealer price even with my discount

2009 Subaru Impreza Air Fuel Ratio Sensor

Somewhat Satisfied
Reviewer: VIsubie

Product works great. Car had 47k low but still tuned on the richer side. So to be expected. Took me 10 mins. Yes I have a full aftermarket exhaust but awesome product. Bosch

2006 Subaru Impreza Air Fuel Ratio Sensor

Very Satisfied
Reviewer: 2004 subaru wrx o2 sensor

Product got here within two days of purchase an works great.

2004 Subaru Impreza Air Fuel Ratio Sensor


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