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Infiniti Oxygen Sensor

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Oxygen Sensor - Sold individually
Replacement
Part Number: USOS-4000
Vehicle Info Required to Guarantee Fit
$23.90
Vehicle Fitment
  • 2006 Infiniti Q45 All Submodels All Engines Car
Product Details
Location : After Catalytic Converter, Driver SideNotes : Designed to fit screw-in type bungs; May not fit with flangesType : 4-wireQuantity Sold : Sold individuallyProduct Fit : UniversalWire Length : 5.91 in. Wire LengthMounting Style : Threaded-in Mounting StyleWarranty : 1-year unlimited-mileage warranty
Oxygen Sensor - Sold individually
Replacement
Part Number: USOS-4000
Vehicle Info Required to Guarantee Fit
$23.90
Vehicle Fitment
  • 1996 - 1997 Infiniti J30 All Submodels All Engines
  • 1997 - 2001 Infiniti Q45 All Submodels All Engines
  • 1997 - 2003 Infiniti QX4 All Submodels All Engines
  • 1997 - 2001 Infiniti I30 All Submodels All Engines
  • 1999 - 2002 Infiniti G20 All Submodels All Engines
  • 2002 - 2004 Infiniti I35 All Submodels All Engines
  • 2004 - 2005 Infiniti QX56 All Submodels All Engines
  • 2004 - 2006 Infiniti FX35 All Submodels All Engines
  • 2004 - 2006 Infiniti G35 All Submodels All Engines
  • 2006 Infiniti M35 All Submodels All Engines
  • 2006 - 2008 Infiniti FX45 All Submodels All Engines
  • 2006 - 2008 Infiniti M45 All Submodels All Engines
Product Details
Location : After Catalytic ConverterNotes : Designed to fit screw-in type bungs; May not fit with flangesType : 4-wireQuantity Sold : Sold individuallyProduct Fit : UniversalWire Length : 5.91 in. Wire LengthMounting Style : Threaded-in Mounting StyleWarranty : 1-year unlimited-mileage warranty
Oxygen Sensor - Sold individually
Replacement
Part Number: USOS-4000
Vehicle Info Required to Guarantee Fit
$23.90
Vehicle Fitment
  • 2002 - 2005 Infiniti Q45 All Submodels All Engines
  • 2003 Infiniti FX35 All Submodels All Engines
  • 2003 Infiniti G35 All Submodels All Engines
  • 2003 - 2004 Infiniti M45 All Submodels All Engines
  • 2003 - 2005 Infiniti FX45 All Submodels All Engines
Product Details
Location : Before Catalytic ConverterNotes : Designed to fit screw-in type bungs; May not fit with flangesType : 4-wireQuantity Sold : Sold individuallyProduct Fit : UniversalWire Length : 5.91 in. Wire LengthMounting Style : Threaded-in Mounting StyleWarranty : 1-year unlimited-mileage warranty
Oxygen Sensor - Sold individually
Replacement
Part Number: USOS-4000
Vehicle Info Required to Guarantee Fit
$23.90
Vehicle Fitment
  • 1990 - 1992 Infiniti M30 All Submodels All Engines
  • 1990 - 1996 Infiniti Q45 All Submodels All Engines
  • 1991 - 1996 Infiniti G20 All Submodels All Engines
  • 1993 - 1995 Infiniti J30 All Submodels All Engines
  • 1996 - 1999 Infiniti I30 All Submodels All Engines
  • 2006 - 2012 Infiniti QX56 All Submodels All Engines
  • 2007 - 2008 Infiniti G35 All Submodels All Engines
  • 2007 - 2010 Infiniti M35 All Submodels All Engines
  • 2007 - 2012 Infiniti FX35 All Submodels All Engines
  • 2008 - 2012 Infiniti EX35 All Submodels All Engines
  • 2008 - 2012 Infiniti G37 All Submodels All Engines
  • 2009 - 2010 Infiniti M45 All Submodels All Engines
  • 2009 - 2012 Infiniti FX50 All Submodels All Engines
  • 2011 - 2012 Infiniti G25 All Submodels All Engines
  • 2011 - 2012 Infiniti M37 All Submodels All Engines
  • 2011 - 2012 Infiniti M56 All Submodels All Engines
  • 2012 Infiniti M35h All Submodels All Engines
Product Details
Notes : Designed to fit screw-in type bungs; May not fit with flangesType : 4-wireQuantity Sold : Sold individuallyProduct Fit : UniversalWire Length : 5.91 in. Wire LengthMounting Style : Threaded-in Mounting StyleWarranty : 1-year unlimited-mileage warranty
Oxygen Sensor - Set of 4
Replacement
Part Number: SET-USOS-4000-4
Vehicle Info Required to Guarantee Fit
$90.82
Product Details
Notes : Designed to fit screw-in type bungs; May not be compatible with flangesComponents : (4) Oxygen SensorsType : 4-wireQuantity Sold : Set of 4Product Fit : UniversalWire Length : 5.91 in. Wire LengthMounting Style : Threaded-inIncludes : Butt type connectors, without plugWarranty : 1-year unlimited-mileage warranty
Oxygen Sensor - Set of 3
Replacement
Part Number: SET-USOS-4000-3
Vehicle Info Required to Guarantee Fit
$68.12
Product Details
Notes : Designed to fit screw-in type bungs; May not be compatible with flangesComponents : (3) Oxygen SensorsType : 4-wireQuantity Sold : Set of 3Product Fit : UniversalWire Length : 5.91 in. Wire LengthMounting Style : Threaded-inIncludes : Butt type connectors, without plugWarranty : 1-year unlimited-mileage warranty
Oxygen Sensor - Sold individually
Replacement
Part Number: REPI960904
Vehicle Info Required to Guarantee Fit
$32.90
Vehicle Fitment
  • 2002 - 2006 Infiniti Q45 Base 8 Cyl 4.5L
  • 2003 - 2006 Infiniti FX35 Base 6 Cyl 3.5L
  • 2003 - 2006 Infiniti G35 Base 6 Cyl 3.5L
  • 2003 - 2008 Infiniti FX45 Base 8 Cyl 4.5L
  • 2003 - 2010 Infiniti M45 Base 8 Cyl 4.5L
  • 2004 - 2006 Infiniti G35 X 6 Cyl 3.5L
  • 2006 Infiniti M35 Base 6 Cyl 3.5L
  • 2006 Infiniti M35 Sport 6 Cyl 3.5L
  • 2006 Infiniti M35 X 6 Cyl 3.5L
  • 2006 - 2010 Infiniti M45 Sport 8 Cyl 4.5L
  • 2008 - 2010 Infiniti M45 X 8 Cyl 4.5L
Product Details
Location : After Catalytic Converter, Driver SideNotes : Downstream (After Catalytic converter)Type : 4-wireQuantity Sold : Sold individuallyRecommended Use : OE ReplacementProduct Fit : Direct FitThread Size : M18-1.5 Thread SizeMounting Style : Threaded-in Mounting StyleHex Size : 7/8 in. Hex SizeInterchange Part Number : OS5402Connector Gender : Male ConnectorWarranty : 1-year unlimited-mileage warranty
Oxygen Sensor - Sold individually
Replacement
Part Number: REPN960910
Vehicle Info Required to Guarantee Fit
$35.33
Vehicle Fitment
  • 2007 Infiniti M35 Sport 6 Cyl 3.5L Engine Designation: VQ35DE, FI, Naturally Aspirated, GAS
  • 2007 - 2008 Infiniti G35 Base 6 Cyl 3.5L
  • 2007 - 2008 Infiniti G35 Journey 6 Cyl 3.5L
  • 2007 - 2008 Infiniti G35 Sport 6 Cyl 3.5L
  • 2007 - 2008 Infiniti G35 X 6 Cyl 3.5L
  • 2007 - 2010 Infiniti M35 Base 6 Cyl 3.5L
  • 2007 - 2010 Infiniti M35 X 6 Cyl 3.5L
  • 2007 - 2012 Infiniti FX35 Base 6 Cyl 3.5L
  • 2008 Infiniti G35 X Sport 6 Cyl 3.5L Engine Designation: VQ35HR, FI, Naturally Aspirated, GAS
  • 2008 - 2012 Infiniti EX35 Base 6 Cyl 3.5L
  • 2008 - 2013 Infiniti G37 Base 6 Cyl 3.7L
  • 2008 - 2013 Infiniti G37 Journey 6 Cyl 3.7L
  • 2008 - 2013 Infiniti G37 Sport 6 Cyl 3.7L
  • 2008 - 2012 Infiniti EX35 Journey 6 Cyl 3.5L
  • 2009 - 2013 Infiniti FX50 Base 8 Cyl 5.0L
  • 2009 - 2013 Infiniti G37 X 6 Cyl 3.7L
  • 2011 Infiniti G25 X Sport 6 Cyl 2.5L
  • 2011 - 2012 Infiniti G25 Base 6 Cyl 2.5L
  • 2011 - 2012 Infiniti G25 Journey 6 Cyl 2.5L
  • 2011 - 2012 Infiniti G25 X 6 Cyl 2.5L
  • 2011 - 2013 Infiniti G37 IPL 6 Cyl 3.7L
  • 2011 - 2013 Infiniti G37 X Sport 6 Cyl 3.7L
  • 2011 - 2013 Infiniti M37 Base 6 Cyl 3.7L
  • 2011 - 2013 Infiniti M37 X 6 Cyl 3.7L
  • 2011 - 2013 Infiniti M56 Base 8 Cyl 5.6L
  • 2011 - 2013 Infiniti M56 X 8 Cyl 5.6L
  • 2012 Infiniti G37 Premier 6 Cyl 3.7L
  • 2013 Infiniti EX37 Base 6 Cyl 3.7L
  • 2013 Infiniti EX37 Journey 6 Cyl 3.7L
  • 2013 Infiniti FX37 Base 6 Cyl 3.7L
  • 2013 Infiniti FX37 Limited 6 Cyl 3.7L
  • 2014 Infiniti Q70 3.7 6 Cyl 3.7L Naturally Aspirated, GAS, To 11/2013
  • 2014 Infiniti Q70 5.6 8 Cyl 5.6L Naturally Aspirated, GAS, To 11/2013
  • 2014 Infiniti QX50 Base 6 Cyl 3.7L
  • 2014 Infiniti QX50 Journey 6 Cyl 3.7L
  • 2014 Infiniti QX70 Base 6 Cyl 3.7L
  • 2014 Infiniti QX70 Base 8 Cyl 5.0L
  • 2015 Infiniti Q40 Base 6 Cyl 3.7L Engine Designation: VQ37VHR, FI, Naturally Aspirated, GAS, To 06/2014
Product Details
Location : After Catalytic Converter, Driver Or Passenger SideNotes : 19.8 in. Overall Length; Heated Sensor Type; 20 Wire Gauge MeasurementType : 4-wireQuantity Sold : Sold individuallyRecommended Use : OE ReplacementProduct Fit : Direct FitThread Size : M18-1.5 Thread SizeMounting Style : Threaded-in Mounting StyleHex Size : 7/8 in. Hex SizeInterchange Part Number : 250-24741Connector Gender : Male ConnectorWarranty : 1-year unlimited-mileage warranty
Oxygen Sensor - Sold individually
Replacement
Part Number: REPN960915
Vehicle Info Required to Guarantee Fit
$54.53
Vehicle Fitment
  • 2008 Infiniti G35 Base 6 Cyl 3.5L Engine Designation: VQ35HR, FI, Naturally Aspirated, GAS
  • 2008 Infiniti G35 Journey 6 Cyl 3.5L Engine Designation: VQ35HR, FI, Naturally Aspirated, GAS
  • 2008 Infiniti G35 Sport 6 Cyl 3.5L Engine Designation: VQ35HR, FI, Naturally Aspirated, GAS
  • 2008 Infiniti G35 X Sport 6 Cyl 3.5L Engine Designation: VQ35HR, FI, Naturally Aspirated, GAS
  • 2008 Infiniti G35 X 6 Cyl 3.5L Engine Designation: VQ35HR, FI, Naturally Aspirated, GAS
  • 2008 - 2009 Infiniti EX35 Journey 6 Cyl 3.5L
  • 2008 - 2010 Infiniti EX35 Base 6 Cyl 3.5L
  • 2009 - 2010 Infiniti G37 Base 6 Cyl 3.7L
  • 2009 - 2010 Infiniti G37 Journey 6 Cyl 3.7L
  • 2009 - 2010 Infiniti G37 Sport 6 Cyl 3.7L
  • 2009 - 2010 Infiniti G37 X 6 Cyl 3.7L
  • 2009 - 2010 Infiniti M35 Base 6 Cyl 3.5L
  • 2009 - 2010 Infiniti M35 X 6 Cyl 3.5L
  • 2009 - 2011 Infiniti FX35 Base 6 Cyl 3.5L
  • 2011 Infiniti M37 Base 6 Cyl 3.7L To 04/2011
  • 2011 Infiniti M37 X 6 Cyl 3.7L To 04/2011
Product Details
Location : Before Catalytic Converter, Driver Or Passenger SideNotes : Before Catalytic Converter, 4-Wire, Air-Fuel RatioType : 4-wireQuantity Sold : Sold individuallyRecommended Use : OE ReplacementProduct Fit : Direct FitWire Length : 12.32 in. Wire LengthThread Size : 18 mm Thread SizeInterchange Part Number : 250-54035, 234-9036Connector Gender : Male ConnectorWarranty : 1-year unlimited-mileage warranty
Oxygen Sensor - Sold individually
Replacement
Part Number: ARBN960913
Vehicle Info Required to Guarantee Fit
$21.63
Vehicle Fitment
  • 2003 - 2005 Infiniti FX45 Base 8 Cyl 4.5L
Product Details
Location : After Catalytic Converter, Driver SideNotes : Downstream (After Catalytic converter)Type : 4-wireQuantity Sold : Sold individuallyRecommended Use : OE ReplacementProduct Fit : Direct FitWire Length : 19 in. Wire LengthThread Size : M18-1.5 Thread SizeMounting Style : Threaded-in Mounting StyleHex Size : 7/8 in. Hex SizeInterchange Part Number : 250-24403Connector Gender : Male ConnectorWarranty : 1-year unlimited-mileage warranty
Oxygen Sensor - Sold individually
Replacement
Part Number: ARBN960913
Vehicle Info Required to Guarantee Fit
$21.63
Vehicle Fitment
  • 2002 - 2006 Infiniti Q45 Base 8 Cyl 4.5L
  • 2003 - 2006 Infiniti FX35 Base 6 Cyl 3.5L
  • 2003 - 2006 Infiniti G35 Base 6 Cyl 3.5L
  • 2003 - 2010 Infiniti M45 Base 8 Cyl 4.5L
  • 2004 - 2006 Infiniti G35 X 6 Cyl 3.5L
  • 2006 Infiniti M35 Base 6 Cyl 3.5L Engine Designation: VQ35DE, FI, Naturally Aspirated, GAS
  • 2006 Infiniti M35 Sport 6 Cyl 3.5L Engine Designation: VQ35DE, FI, Naturally Aspirated, GAS
  • 2006 Infiniti M35 X 6 Cyl 3.5L Engine Designation: VQ35DE, FI, Naturally Aspirated, GAS
  • 2006 - 2008 Infiniti FX45 Base 8 Cyl 4.5L
  • 2006 - 2010 Infiniti M45 Sport 8 Cyl 4.5L
  • 2008 - 2010 Infiniti M45 X 8 Cyl 4.5L
Product Details
Location : After Catalytic Converter, Passenger SideNotes : Downstream (After Catalytic converter)Type : 4-wireQuantity Sold : Sold individuallyRecommended Use : OE ReplacementProduct Fit : Direct FitWire Length : 19 in. Wire LengthThread Size : M18-1.5 Thread SizeMounting Style : Threaded-in Mounting StyleHex Size : 7/8 in. Hex SizeInterchange Part Number : 250-24403Connector Gender : Male ConnectorWarranty : 1-year unlimited-mileage warranty
Oxygen Sensor - Set of 2
Replacement
Part Number: SET-ARBN960915
Vehicle Info Required to Guarantee Fit
$44.00
Product Details
Location : Before And After Catalytic Converter, Passenger SideComponents : (2) Oxygen SensorsType : 4-wireQuantity Sold : Set of 2Recommended Use : OE ReplacementProduct Fit : Direct FitWire Length : 19 in. and 14.75 in. Wire LengthThread Size : M18-1.5 Thread SizeMounting Style : Threaded-in Mounting StyleHex Size : 7/8 in. Hex SizeInterchange Part Number : 250-24452, 250-24403Connector Gender : Male ConnectorWarranty : 1-year unlimited-mileage warranty
Oxygen Sensor - Set of 2
Replacement
Part Number: SET-USOS-4000-2
Vehicle Info Required to Guarantee Fit
$45.41
Vehicle Fitment
  • 1990 - 1992 Infiniti M30 All Submodels All Engines
  • 1990 - 1996 Infiniti Q45 All Submodels All Engines
  • 1991 - 1996 Infiniti G20 All Submodels All Engines
  • 1993 - 1995 Infiniti J30 All Submodels All Engines
  • 1996 - 1999 Infiniti I30 All Submodels All Engines
  • 2006 - 2012 Infiniti QX56 All Submodels All Engines
  • 2007 - 2008 Infiniti G35 All Submodels All Engines
  • 2007 - 2010 Infiniti M35 All Submodels All Engines
  • 2007 - 2012 Infiniti FX35 All Submodels All Engines
  • 2008 - 2012 Infiniti EX35 All Submodels All Engines
  • 2008 - 2012 Infiniti G37 All Submodels All Engines
  • 2009 - 2010 Infiniti M45 All Submodels All Engines
  • 2009 - 2012 Infiniti FX50 All Submodels All Engines
  • 2011 - 2012 Infiniti G25 All Submodels All Engines
  • 2011 - 2012 Infiniti M37 All Submodels All Engines
  • 2011 - 2012 Infiniti M56 All Submodels All Engines
  • 2012 Infiniti M35h All Submodels All Engines
Product Details
Notes : Designed to fit screw-in type bungs; May not be compatible with flangesComponents : (2) Oxygen SensorsType : 4-wireQuantity Sold : Set of 2Product Fit : UniversalWire Length : 5.91 in. Wire LengthMounting Style : Threaded-inIncludes : Butt type connectors, without plugWarranty : 1-year unlimited-mileage warranty
Oxygen Sensor - Sold individually
Replacement
Part Number: REPN960916
Vehicle Info Required to Guarantee Fit
$26.48
Vehicle Fitment
  • 2004 - 2010 Infiniti QX56 Base 8 Cyl 5.6L
Product Details
Location : After Catalytic Converter, Driver Or Passenger SideNotes : HeatedType : 4-wireQuantity Sold : Sold individuallyRecommended Use : OE ReplacementProduct Fit : Direct FitWire Length : 18.5 in. Wire LengthThread Size : M18-1.5 Thread SizeMounting Style : Threaded-in Mounting StyleHex Size : 7/8 in. Hex SizeInterchange Part Number : 250-24453Connector Gender : Male ConnectorWarranty : 1-year unlimited-mileage warranty
Oxygen Sensor - Sold individually
Replacement
Part Number: REPN960911
Vehicle Info Required to Guarantee Fit
$43.28
Vehicle Fitment
  • 2011 - 2013 Infiniti QX56 Base 8 Cyl 5.6L
  • 2014 - 2015 Infiniti QX80 Base 8 Cyl 5.6L
Product Details
Location : After Catalytic Converter, Driver Or Passenger SideNotes : 12.91 in. Overall Length; Heated Sensor Type; 20 Wire Gauge MeasurementType : 4-wireQuantity Sold : Sold individuallyRecommended Use : OE ReplacementProduct Fit : Direct FitThread Size : M18-1.5 Thread SizeMounting Style : Threaded-in Mounting StyleHex Size : 7/8 in. Hex SizeInterchange Part Number : 250-24771Connector Gender : Male ConnectorWarranty : 1-year unlimited-mileage warranty
Oxygen Sensor - After Catalytic Converter, Driver and Passenger Side, Set of 2
Vehicle Info Required to Guarantee Fit
$82.23
Product Details
Location : After Catalytic Converter, Driver And Passenger SideComponents : (2) Oxygen SensorsType : 4-wireQuantity Sold : Set of 2Recommended Use : OE ReplacementProduct Fit : Direct FitThread Size : M18-1.5Mounting Style : Threaded-inHex Size : 7/8 in.Interchange Part Number : 250-24771Connector Gender : Male ConnectorWarranty : 1-year unlimited-mileage warranty
Oxygen Sensor - Sold individually
Replacement
Part Number: REPN960908
Vehicle Info Required to Guarantee Fit
$22.18
Vehicle Fitment
  • 2002 - 2004 Infiniti I35 Base 6 Cyl 3.5L
Product Details
Location : Before Catalytic Converter, Front Or RearType : 3-wireQuantity Sold : Sold individuallyRecommended Use : OE ReplacementProduct Fit : Direct FitThread Size : M18-1.5 Thread SizeMounting Style : Threaded-in Mounting StyleHex Size : 7/8 in. Hex SizeInterchange Part Number : 250-23131Connector Gender : Male ConnectorWarranty : 1-year unlimited-mileage warranty
Oxygen Sensor - Sold individually
Replacement
Part Number: REPN960908
Vehicle Info Required to Guarantee Fit
$22.18
Vehicle Fitment
  • 2001 - 2003 Infiniti QX4 Base 6 Cyl 3.5L
Product Details
Location : Before Catalytic Converter, Passenger SideType : 3-wireQuantity Sold : Sold individuallyRecommended Use : OE ReplacementProduct Fit : Direct FitThread Size : M18-1.5 Thread SizeMounting Style : Threaded-in Mounting StyleHex Size : 7/8 in. Hex SizeInterchange Part Number : 250-23131Connector Gender : Male ConnectorWarranty : 1-year unlimited-mileage warranty
Oxygen Sensor - Before Catalytic Converter, Front and Rear, Set of 2
Vehicle Info Required to Guarantee Fit
$42.14
Product Details
Location : Before Catalytic Converter, Front And RearComponents : (2) Oxygen SensorsType : 3-wireQuantity Sold : Set of 2Recommended Use : OE ReplacementProduct Fit : Direct FitThread Size : M18-1.5Mounting Style : Threaded-inHex Size : 7/8 in.Interchange Part Number : 250-23131Connector Gender : Male ConnectorWarranty : 1-year unlimited-mileage warranty
Oxygen Sensor - Sold individually
Replacement
Part Number: ARBN960912
Vehicle Info Required to Guarantee Fit
$32.77
Vehicle Fitment
  • 2002 - 2004 Infiniti I35 Base 6 Cyl 3.5L
Product Details
Location : After Catalytic Converter, FrontType : 4-wireQuantity Sold : Sold individuallyRecommended Use : OE ReplacementProduct Fit : Direct FitWire Length : 34.45 in. Wire LengthThread Size : M18-1.5 Thread SizeMounting Style : Threaded-in Mounting StyleHex Size : 7/8 in. Hex SizeInterchange Part Number : 250-24285Connector Gender : Male ConnectorWarranty : 1-year unlimited-mileage warranty
Page 1 of 24 | Showing 1 - 15 of 356 results

Infiniti Oxygen Sensor Customer Reviews

The sensor is working ok thus far. The reason for the low rating is when I searched for this part with my vehicle info this was the cheapest of several but all were without the connecting clip on end of wiring. Therefore I thought this was the only way I could purchase what I needed. After receiving item n going back to this same company n site, when I repeated exactly the same info, the sensor came up with the connecting clip on end and no wiring to have to connect and only $1 more.
Allie Foster
VERIFIED PURCHASER
Appearance: 3.0 / 5.0
Ease Of Use / Installation: 2.0 / 5.0
Quality of Product: 3.0 / 5.0
Performance: 3.0 / 5.0
Purchased on Sep 07, 2019
Awesome 👍
Debra Parsons
VERIFIED PURCHASER
Appearance: 5.0 / 5.0
Ease Of Use / Installation: 5.0 / 5.0
Quality of Product: 5.0 / 5.0
Performance: 5.0 / 5.0
Purchased on Aug 11, 2019
Oxygen Sensor - Sold Individually
Jul 29, 2019
I liked how the packages were sealed so there was a very slim chance the delicate electronic ends could get damaged!
They both arrived promptly and in great condition. I didn't get the chance to install them as the car was sold before I could! But thank you for getting them to me quickly!
Michael Reed
VERIFIED PURCHASER
Appearance: 5.0 / 5.0
Quality of Product: 5.0 / 5.0
Performance: 2.0 / 5.0
Purchased on May 29, 2019

Infiniti Oxygen Sensor Articles

Your Infiniti oxygen sensor is one of many sensors utilized in the design of the modern vehicle to help keep the mechanical systems at work in your vehicle operating at their most efficient. Your Infiniti oxygen sensor, in addition to serving to help keep your exhaust fumes within the legal standards for vehicle emissions levels, helps to keep your combustion system operating efficiently, which is better for your pocket and for the environment. Located in your exhaust system, just after the combustion system where the temperature is highest, your Infiniti oxygen sensor measures the amount of oxygen remaining in the exhaust as it exits the combustion area. This is important because if the oxygen level is off, then that means that the fuel burn is not occurring as efficiently as possible, often because the air-to-fuel ratio is skewed. When your Infiniti oxygen sensor detects an inappropriate amount of oxygen in the exhaust, it then sends a signal to the main computer of your vehicle, which in turn adjusts the air-to-fuel ratio, and the process continues, working towards that near perfect ratio that will result in the cleanest, most efficient use of fuel possible for your vehicle. If your Infiniti oxygen sensor is malfunctioning or has failed altogether, your engine will typically revert to a air-to-fuel mixture that is often referred to as rich, meaning one that is a bit heavy in fuel, a balance that is good neither for the environment, nor your fuel economy. Running rich is wasteful, you are not getting the most power from the fuel you are burning, and are passing a significant portion into your exhaust unused, unburned. Replacing your Infiniti oxygen is a fairly simple type of repair to make, one that you could probably do yourself with the usual contents of the average tool set. You can order an affordably priced Infiniti oxygen sensor of dependable quality from our online catalog, which features a broad selection of aftermarket Infiniti parts and accessories, using our secure online ordering system or with a fast toll-free telephone call.

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