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Lexus Oxygen Sensors

547 items

Shop best-selling oxygen sensors for Ford, Chevy, Honda, Nissan, Toyota, and more. Direct-fit O2 sensors with fast response, improved MPG, and reliable emissions performance.

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Downstream O2 Oxygen Sensor | 2-Pc Direct-Fit | Heated | A-Premium APOS0174Downstream O2 Oxygen Sensor | 2-Pc Direct-Fit | Heated | A-Premium APOS0174
A-Premium®Part # APOS0174
Downstream O2 Oxygen Sensor | 2-Pc Direct-Fit | Heated | A-Premium APOS0174
4.5660 Reviews
$51.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2001 - 2005 Lexus IS300
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Lexus
Quantity2
Installation PositionDownstream
Item LocatedUnited States
ConditionNew
item #10049NTL
Show less
Downstream Front & Rear O2 Oxygen Sensor | 2-Pc Direct-Fit | Heated | A-Premium APOS0906
A-Premium®Part # APOS0906
Downstream Front & Rear O2 Oxygen Sensor | 2-Pc Direct-Fit | Heated | A-Premium APOS0906
4.5660 Reviews
$66.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2014 - 2016 Toyota Highlander, 2014 - 2015 Lexus RX350, 2011 - 2016 Toyota Highlander, 2011 - 2015 Lexus RX450h
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Lexus
Installation PositionDownstream Front & Rear
Item LocatedUnited States
ConditionNew
item #1001H5YY
Note
This item for 2014 RX350, fits the model From 03/2014.
Show less
O2 Oxygen Sensor | 1-Pc Direct-Fit | Heated | A-Premium OS187
A-Premium®Part # OS187
O2 Oxygen Sensor | 1-Pc Direct-Fit | Heated | A-Premium OS187
4.5660 Reviews
$28.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2000 - 2000 Toyota 4Runner, 2000 - 2000 Toyota Tacoma, 1999 - 1999 Toyota 4Runner, 1999 - 1999 Toyota Tacoma, 1996 - 1998 Toyota Tacoma, 1996 - 1997 Lexus LX450, 1996 - 1997 Toyota 4Runner, 1996 - 1997 Toyota 4Runner, 1996 - 1997 Toyota Previa, 1995 - 1997 Toyota Land Cruiser, 1995 - 1995 Toyota Tacoma, 1994 - 1995 Toyota Previa, 1994 - 1994 Toyota T100, 1993 - 1993 Toyota T100
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Lexus
Installation PositionCheck the fitment chart
Item LocatedUnited States
ConditionNew
item #10030QQQ
Note
Oxygen Senor - Bank 1 Sensor 1 (B1S1), Bank 1 Sensor 2 (B1S2).
【Note-1】For 1996-1997 1999 4Runner fits RWD(Rear Wheel Drive) only, not fits 4WD(Four Wheel Drive).
【Note-2】For 2000 4Runner & 1994 T100 fits 4WD(Four Wheel Drive) only, not fits RWD(Rear Wheel Drive).
【Note-3】For Land Cruiser fits the model built from 1/1995.
【Note-4】For 2000 4Runner & 1993 T100 fits with California Emissions, not fits with Federal Emissions.
【Note-5】For 1999 4Runner & 2000 Tacoma fits with Non California Emissions.
Show less
Downstream Driver & Passenger O2 Oxygen Sensor | 2-Pc Direct-Fit | Heated | A-Premium APOS0984
A-Premium®Part # APOS0984
Downstream Driver & Passenger O2 Oxygen Sensor | 2-Pc Direct-Fit | Heated | A-Premium APOS0984
4.5660 Reviews
$49.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2016 - 2018 Lexus IS300, 2016 - 2018 Lexus RC300, 2015 - 2018 Lexus RC350, 2015 - 2015 Lexus IS250, 2014 - 2018 Lexus IS350, 2014 - 2015 Lexus GS350, 2014 - 2014 Lexus IS350
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Lexus
Quantity2
Installation PositionDownstream Driver & Passenger
Item LocatedUnited States
ConditionNew
item #1001H93X
Show less
Downstream Driver & Passenger O2 Oxygen Sensor | 2-Pc Direct-Fit | Heated | A-Premium APOS0426
A-Premium®Part # APOS0426
Downstream Driver & Passenger O2 Oxygen Sensor | 2-Pc Direct-Fit | Heated | A-Premium APOS0426
4.5660 Reviews
$48.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 1992 - 1995 Lexus SC400
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Lexus
Quantity2
Installation PositionDownstream Driver & Passenger
Item LocatedUnited States
ConditionNew
item #1004AERY
Show less
O2 Oxygen Sensor | 1-Pc Direct-Fit | Heated | A-Premium OS145
A-Premium®Part # OS145
O2 Oxygen Sensor | 1-Pc Direct-Fit | Heated | A-Premium OS145
4.5660 Reviews
$26.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2022 - 2024 Lexus IS500, 2022 - 2024 Lexus RC F, 2018 - 2018 Lexus GS450h, 2016 - 2020 Lexus GS F, 2016 - 2017 Lexus IS300, 2016 - 2017 Lexus RC300, 2015 - 2021 Lexus RC F, 2015 - 2017 Lexus IS350, 2015 - 2017 Lexus RC350, 2015 - 2015 Lexus IS250, 2014 - 2017 Lexus IS350, 2014 - 2015 Lexus GS350, 2014 - 2015 Lexus GS450h, 2014 - 2014 Lexus IS250, 2009 - 2017 Lexus LS460, 2008 - 2015 Lexus LS600h, 2007 - 2017 Lexus LS460, 2004 - 2009 Toyota Prius, 2003 - 2005 Toyota Celica, 2002 - 2002 Toyota Celica
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Lexus
Installation PositionCheck the fitment chart
Item LocatedUnited States
ConditionNew
item #10031CPG
Note
Oxygen Senor - Bank 1 Sensor 2 (B1S12).
【Note-1】For GS350 & 2015 IS250 & 2015-2017 IS350 & 2015-2017 RC350 fits RWD(Rear Wheel Drive) only, not fits AWD(All Wheel Drive) (Left).
【Note-2】For 2007-2017 LS460 fits RWD(Rear Wheel Drive) only, not fits AWD(All Wheel Drive) (Left or Right).
【Note-3】For 2014 IS250(Left or Right) & 2009-2017 LS460(Right) fits AWD(All Wheel Drive) only, not fits RWD(Rear Wheel Drive).
【Note-4】For GS350 fits the model Built From 08/2013.
【Note-5】For GS450h fits the model Built From 09/2013.
Show less
Upstream & Downstream O2 Oxygen Sensor | 4-Pc Direct-Fit | Heated | A-Premium APOS0213
A-Premium®Part # APOS0213
Upstream & Downstream O2 Oxygen Sensor | 4-Pc Direct-Fit | Heated | A-Premium APOS0213
4.5660 Reviews
$122.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2003 - 2004 Lexus GX470, 2003 - 2004 Toyota 4Runner
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Lexus
Quantity4
Installation PositionUpstream & Downstream
Item LocatedUnited States
ConditionNew
item #10049GGS
Show less
O2 Oxygen Sensor | 1-Pc Direct-Fit | Heated | A-Premium OS029
A-Premium®Part # OS029
O2 Oxygen Sensor | 1-Pc Direct-Fit | Heated | A-Premium OS029
4.5660 Reviews
$19.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2008 - 2014 Scion XD, 2008 - 2011 Lexus GS460, 2007 - 2014 Toyota Yaris, 2004 - 2006 Scion XA, 2004 - 2006 Scion XB, 2003 - 2006 Pontiac Vibe, 2003 - 2006 Toyota Matrix, 2001 - 2003 Toyota Prius, 2000 - 2005 Toyota Echo, 1998 - 2000 Lexus SC300, 1998 - 1998 Toyota Supra, 1996 - 1996 Toyota Camry, 1995 - 1997 Lexus GS300, 1994 - 1996 Lexus ES300, 1994 - 1995 Toyota Camry, 1993 - 1994 Lexus GS300, 1992 - 1993 Lexus ES300, 1992 - 1993 Toyota Camry
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Lexus
Installation PositionCheck the fitment chart
Item LocatedUnited States
ConditionNew
item #10030S77
Note
O2 Sensor - Bank 1 Sensor 2 (B1S2).
【Note-1】Features a Square connector, not fit with Oblong or Oval or Rectangle connectors.
【Note-2】For 1995-1997 GS300 & 1998-2000 SC300 fit Cylinder 1-3 only, not Cylinder 4-6.
【Note-3】 For 1998 Supra fits Cylinder 4-6 only, not Cylinder 1-3.
【Note-4】For Vibe & Matrix fit AWD(All Wheel Drive)only, not FWD(Front Wheel Drive).
【Note-5】For Yaris, fit the model Built To 07/2014.
【Note-6】For ES300 & 1992-1993 Camry fit with California Emissions, not fit with Federal Emissions.
Show less
Downstream Driver & Passenger O2 Oxygen Sensor | 2-Pc Direct-Fit | Heated | A-Premium APOS0684
A-Premium®Part # APOS0684
Downstream Driver & Passenger O2 Oxygen Sensor | 2-Pc Direct-Fit | Heated | A-Premium APOS0684
4.5660 Reviews
$51.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2013 - 2014 Lexus GS350, 2011 - 2011 Lexus GS350, 2007 - 2010 Lexus GS350
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Lexus
Quantity2
Installation PositionDownstream Driver & Passenger
Item LocatedUnited States
ConditionNew
item #10049H1S
Show less
Upstream & Downstream O2 Oxygen Sensor | 4-Pc Direct-Fit | Heated | A-Premium APOS1691
A-Premium®Part # APOS1691
Upstream & Downstream O2 Oxygen Sensor | 4-Pc Direct-Fit | Heated | A-Premium APOS1691
4.5660 Reviews
$106.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 1998 - 2000 Lexus GS400
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Lexus
Quantity4
Installation PositionUpstream & Downstream
Item LocatedUnited States
ConditionNew
item #10049W2C
Show less
O2 Oxygen Sensor | 1-Pc Direct-Fit | Heated | A-Premium OS146
A-Premium®Part # OS146
O2 Oxygen Sensor | 1-Pc Direct-Fit | Heated | A-Premium OS146
4.5660 Reviews
$40.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2003 - 2003 Toyota Solara, 2001 - 2003 Toyota Sienna, 2001 - 2002 Toyota Solara, 2001 - 2001 Toyota Camry, 2000 - 2004 Toyota Avalon, 2000 - 2001 Lexus ES300
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Lexus
Installation PositionCheck the fitment chart
Item LocatedUnited States
ConditionNew
item #10032SHE
Note
【Note-1】Features a Square connector.
not fits w/ Rectangular connectors.
【Note-2】For 2001 Camry & 2001-2002 Solara fits Automatic Transmission only, not Manual Transmission.
Show less
O2 Oxygen Sensor | 1-Pc Direct-Fit | Heated | A-Premium OS155
A-Premium®Part # OS155
O2 Oxygen Sensor | 1-Pc Direct-Fit | Heated | A-Premium OS155
4.5660 Reviews
$24.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2022 - 2024 Lexus IS300, 2022 - 2024 Lexus RC300, 2018 - 2021 Lexus IS300, 2018 - 2021 Lexus RC300, 2018 - 2019 Lexus GS300, 2017 - 2017 Lexus RC200t, 2016 - 2017 Lexus GS200t, 2016 - 2017 Lexus IS200t, 2016 - 2016 Lexus RC200t, 2015 - 2018 Lexus ES350, 2014 - 2014 Lexus ES350, 2007 - 2017 Toyota Camry, 2007 - 2013 Lexus ES350, 2005 - 2018 Toyota Avalon, 2004 - 2008 Toyota Solara, 2004 - 2006 Lexus ES330, 2004 - 2006 Toyota Camry, 2002 - 2006 Toyota Camry, 2002 - 2003 Lexus ES300, 1998 - 2005 Lexus GS300
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Lexus
Installation PositionCheck the fitment chart
Item LocatedUnited States
ConditionNew
item #10030RHY
Note
【Note-1】For 1998-2005 GS300 fits Cylinder 4-6, not Cylinder 1-3.
【Note-2】For 2014 ES350 fits the model Built To 08/2014.
O2 Sensor - Bank 1 Sensor 2 (B1S2).
Show less
Upstream & Downstream O2 Oxygen Sensor | 4-Pc Direct-Fit | Heated | A-Premium APOS0173
A-Premium®Part # APOS0173
Upstream & Downstream O2 Oxygen Sensor | 4-Pc Direct-Fit | Heated | A-Premium APOS0173
4.5660 Reviews
$98.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 1996 - 2000 Lexus SC400, 1995 - 2000 Lexus LS400
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Lexus
Quantity4
Installation PositionUpstream & Downstream
Item LocatedUnited States
ConditionNew
item #10049EK2
Show less
O2 Oxygen Sensor | 1-Pc Direct-Fit | Heated | A-Premium OS021
A-Premium®Part # OS021
O2 Oxygen Sensor | 1-Pc Direct-Fit | Heated | A-Premium OS021
4.5660 Reviews
$22.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2019 - 2019 Toyota Corolla, 2014 - 2018 Toyota Corolla, 2005 - 2006 Toyota Camry, 2004 - 2004 Toyota Camry, 2003 - 2003 Toyota Camry, 2003 - 2003 Toyota Solara, 2001 - 2001 Toyota Camry, 2001 - 2001 Toyota Solara, 2001 - 2001 Toyota Solara, 2000 - 2001 Toyota Camry, 1999 - 2001 Lexus ES300, 1999 - 2001 Toyota Camry, 1999 - 2001 Toyota Solara, 1999 - 2000 Toyota Camry, 1999 - 2000 Toyota Solara, 1998 - 2005 Lexus GS300, 1997 - 1998 Lexus ES300, 1997 - 1998 Toyota Camry, 1997 - 1998 Toyota Camry, 1996 - 2000 Lexus SC400
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Lexus
Installation PositionCheck the fitment chart
Item LocatedUnited States
ConditionNew
item #10031W79
Note
O2 Sensor - Bank 1 Sensor 1 (B1S1), Bank 1 Sensor 2 (B1S2), Bank 1 Sensor 3 (B1S3).
This item for 1998-2005 Lexus GS300 L6 3.0L fits Cylinder 4-6, not Cylinder 1-3.
Show less
Downstream Driver O2 Oxygen Sensor | 1-Pc Direct-Fit | Heated | A-Premium APOS0570
A-Premium®Part # APOS0570
Downstream Driver O2 Oxygen Sensor | 1-Pc Direct-Fit | Heated | A-Premium APOS0570
4.5660 Reviews
$33.99
Low stock: Only 2 left
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2016 - 2017 Lexus IS300, 2016 - 2017 Lexus RC300, 2016 - 2017 Lexus RC350, 2014 - 2017 Lexus IS350, 2014 - 2015 Lexus GS350, 2014 - 2015 Lexus IS250
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Lexus
Installation PositionDownstream Driver
Item LocatedUnited States
ConditionNew
item #10032EYZ
Note
【Note-1】 It fits the model with AWD(All Wheel Drive) only, not fit RWD(Rear Wheel Drive).
【Note-2】 It fits the model built To 10/2017.
Show less
Upstream & Downstream O2 Oxygen Sensor | 4-Pc Direct-Fit | Heated | A-Premium APOS1718
A-Premium®Part # APOS1718
Upstream & Downstream O2 Oxygen Sensor | 4-Pc Direct-Fit | Heated | A-Premium APOS1718
4.5660 Reviews
$153.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2020 - 2020 Toyota Land Cruiser, 2020 - 2020 Toyota Land Cruiser, 2016 - 2020 Lexus LX570, 2016 - 2019 Toyota Land Cruiser, 2013 - 2014 Toyota 4Runner, 2013 - 2014 Toyota FJ Cruiser
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Lexus
Quantity4
Installation PositionUpstream & Downstream
Item LocatedUnited States
ConditionNew
item #1001GR9H
Show less
Upstream & Downstream O2 Oxygen Sensor | 4-Pc Direct-Fit | Heated | A-Premium APOS0907
A-Premium®Part # APOS0907
Upstream & Downstream O2 Oxygen Sensor | 4-Pc Direct-Fit | Heated | A-Premium APOS0907
4.5660 Reviews
$177.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2014 - 2016 Toyota Highlander, 2014 - 2015 Lexus RX350, 2011 - 2016 Toyota Highlander, 2011 - 2015 Lexus RX450h
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Lexus
Installation PositionUpstream & Downstream
Item LocatedUnited States
ConditionNew
item #1001GRW5
Note
Oxygen Senor - Location-Upstream and Downstream(Front and Rear).
【Note-1】For 2014 RX350, fits the model Front 03/2014.
【Note-2】For 2014-2015 RX350, Exc. Japan Built Vehicle.
Show less
Upstream & Downstream O2 Oxygen Sensor | 4-Pc Direct-Fit | Heated | A-Premium APOS0191
A-Premium®Part # APOS0191
Upstream & Downstream O2 Oxygen Sensor | 4-Pc Direct-Fit | Heated | A-Premium APOS0191
4.5660 Reviews
$112.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2001 - 2004 Toyota Sequoia, 2000 - 2004 Toyota Tundra, 1998 - 2005 Lexus LX470, 1998 - 2005 Toyota Land Cruiser
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Lexus
Installation PositionUpstream & Downstream
Item LocatedUnited States
ConditionNew
item #10049ESV
Note
【Note-1】For Lexus LX470 fit the model To 05/01/2005.
【Note-2】For Toyota Land Cruiser fit the model To 5/2005.
Show less
Upstream & Downstream O2 Oxygen Sensor | 4-Pc Direct-Fit | Heated | A-Premium APOS1720
A-Premium®Part # APOS1720
Upstream & Downstream O2 Oxygen Sensor | 4-Pc Direct-Fit | Heated | A-Premium APOS1720
4.5660 Reviews
$155.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2014 - 2014 Lexus IS250, 2013 - 2013 Lexus IS350
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Lexus
Installation PositionUpstream & Downstream
Item LocatedUnited States
ConditionNew
item #1001GTXS
Note
【Note-1】 Fit RWD(Rear Wheel Drive) Only, Not Fit AWD(All Wheel Drive).
【Note-2】 Fit for Lexus IS250 From 08/2013.
Show less
Upstream & Downstream O2 Oxygen Sensor | 4-Pc Direct-Fit | Heated | A-Premium APOS1170
A-Premium®Part # APOS1170
Upstream & Downstream O2 Oxygen Sensor | 4-Pc Direct-Fit | Heated | A-Premium APOS1170
4.5660 Reviews
$149.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2015 - 2017 Lexus IS350, 2015 - 2017 Lexus LS460, 2015 - 2017 Lexus RC350, 2015 - 2015 Lexus IS250, 2015 - 2015 Lexus IS350, 2014 - 2015 Lexus GS350, 2014 - 2014 Lexus IS250, 2014 - 2014 Lexus LS460
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Lexus
Quantity4
Installation PositionUpstream & Downstream
Item LocatedUnited States
ConditionNew
item #1001GPA9
Show less
Page 3 of 28

Your vehicle’s oxygen sensor (also known as O2 sensors) plays a critical role in engine performance, fuel efficiency, and emissions control. By continuously measuring the amount of unburned oxygen in the exhaust, the oxygen sensor sends real-time feedback to your engine control unit (ECU), ensuring the perfect air-fuel mixture.

When an oxygen sensor fails, your engine essentially runs “blind,” leading to poor fuel economy, rough idling, reduced performance, and a persistent check engine light. A timely front oxygen sensor replacement or replacement of a faulty upstream oxygen sensor or downstream oxygen sensor can restore optimal driving conditions and help you pass emissions tests with ease.

 

Why Choose A-Premium Oxygen Sensors?

Unlike universal parts that require cutting and splicing wires, A-Premium O2 sensors are engineered for direct plug-and-play installation.

  • OEM-style connectors for seamless fit
  • Pre-coated anti-seize threads for easy installation
  • Laser-welded body construction for durability
  • High-temperature sintered coating for long service life
  • Premium insulation sheathing and impact-resistant design
  • Slotted guard tube for sensor protection
  • High heat dissipation structure for extreme environments

 

Advanced Performance & Precision

A-Premium oxygen sensor technology ensures fast, accurate, and stable performance:

Performance & Response

  • ≤200ms fast response time
  • High-efficiency oxygen sensing
  • Zirconia sensing element
  • Real-time signal feedback

Precision & Control

  • Real-time exhaust tracking
  • Accurate combustion control
  • Stable signal output

Efficiency & Engine Benefits

  • Improved fuel efficiency
  • Enhanced engine performance
  • Reduced harmful emissions
  • Extended engine lifespan

Environmental Adaptability

  • Operating range: -40°F to 266°F
  • Air-tight sealing design
  • Stable performance under harsh conditions

 

3 Symptoms of a Bad Oxygen Sensor

Because O2 sensors operate in extreme heat and carbon-rich environments, they naturally degrade over time.

  • Check Engine Light (CEL): Common codes include P0135, P0171, and P0420. These often point to issues with an upstream oxygen sensor or oxygen sensor bank 1.
  • Poor Fuel Economy: A faulty oxygen sensor may cause a rich fuel mixture, dramatically lowering MPG. 20-40% worse fuel economy overnight.
  • Rough Idle & Stalling: Incorrect readings from your downstream oxygen sensor or upstream sensor can disrupt engine stability.
  • Rotten egg smell: Catalytic converter overheating from bad fuel mixture

 

Understanding O2 Sensor Positions: Upstream vs Downstream

Modern vehicles may have multiple oxygen sensor units, making it essential to identify the correct one:

  • Oxygen Sensor Bank 1vs Bank 2 
    • oxygen sensor bank 1 refers to the side of the engine with Cylinder #1
    • Bank 2 is the opposite side
  • Upstream Oxygen Sensor(Sensor 1) 
    • Located before the catalytic converter
    • Controls air-fuel ratio
    • Most common need for front oxygen sensor replacement
  • Downstream Oxygen Sensor(Sensor 2) 
    • Located after the catalytic converter
    • Monitors emissions system efficiency

Tip: Always match your diagnostic code to the correct upstream oxygen sensor or downstream oxygen sensor before purchasing.

 

Complete Your Emissions Repair

Replacing your oxygen sensor is often part of a larger emissions system fix. Consider inspecting these related components:

 

Shop by Popular Makes

To help you quickly find the right oxygen sensor, explore our most popular vehicle-specific options:

Browse our most searched and best-selling vehicle-specific oxygen sensor options to quickly locate the right fit for your car.

Related Blogs

Can I Use a Downstream Oxygen Sensor for Upstream?

No, upstream and downstream O2 sensors are rarely interchangeable. Differences in technology, electrical specs, and function mean swapping them causes engine issues. Learn why mixing them fails and how to identify the correct sensor for your vehicle.

Oct 12, 2026

P0130 Code: Bank 1 Sensor 1 O2 Circuit Diagnosis & Fixes

Diagnose P0130 (Bank 1 Sensor 1 O2 Circuit) accurately. Avoid guessing: check wiring, exhaust leaks, and engine conditions before replacing the sensor. Learn proper testing steps, safety tips, and how to confirm the fix for lasting results.

Sep 29, 2026

Can You Clean an O2 Sensor to Make It Work Again?

Cleaning an O2 sensor rarely fixes internal faults or chemical poisoning. Learn to diagnose root causes, interpret deposit colors, avoid damaging methods, and determine when replacement is the only reliable solution for engine health.

Sep 22, 2026

P0031 Code: Bank 1 Sensor 1 Heater Circuit Low

Diagnose P0031 (Bank 1 Sensor 1 Heater Circuit Low) with our step-by-step guide. Identify causes like faulty wiring, blown fuses, or bad sensors. Test resistance and power safely to avoid unnecessary replacements and ensure accurate repairs.

Sep 22, 2026

P0138 Code: O2 Sensor Circuit High Voltage (Bank 1 Sensor 2)

P0138 indicates high voltage in the Bank 1 Sensor 2 O2 circuit. Don't just replace the sensor; diagnose wiring shorts, connector issues, or rich fuel conditions first. Learn proper location, symptoms, and step-by-step fixes to avoid costly mistakes.

Sep 10, 2026