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Chevrolet Oxygen Sensors

832 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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Upstream or Downstream O2 Oxygen Sensor | 1-Pc Direct-Fit | Heated | A-Premium APOS1876Upstream or Downstream O2 Oxygen Sensor | 1-Pc Direct-Fit | Heated | A-Premium APOS1876
A-Premium®Part # APOS1876
Upstream or Downstream O2 Oxygen Sensor | 1-Pc Direct-Fit | Heated | A-Premium APOS1876
4.5647 Reviews
$49.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2024 - 2024 Chevrolet Traverse Limited, 2020 - 2024 Cadillac XT6, 2019 - 2024 Chevrolet Blazer, 2018 - 2024 Buick Enclave, 2018 - 2023 Chevrolet Traverse, 2018 - 2023 GMC Acadia, 2017 - 2024 Cadillac XT5, 2017 - 2022 Chevrolet Colorado, 2017 - 2022 GMC Canyon, 2017 - 2017 GMC Acadia
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Chevrolet
Installation PositionUpstream or Downstream
Item LocatedUnited States
ConditionNew
item #1000TXWK
Note
O2 Sensor - Downstream Left(B2S2) or Downstream Right(B1S2) or Upstream Left(B2S1) or Upstream Right(B1S1).
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Upstream & Downstream O2 Oxygen Sensor | 2-Pc Direct-Fit | Heated | A-Premium APOS1512
A-Premium®Part # APOS1512
Upstream & Downstream O2 Oxygen Sensor | 2-Pc Direct-Fit | Heated | A-Premium APOS1512
4.5647 Reviews
$57.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2002 - 2004 Buick Rendezvous, 2001 - 2004 Buick Century, 2001 - 2004 Chevrolet Impala, 2001 - 2004 Chevrolet Monte Carlo, 2001 - 2004 Chevrolet Venture, 2001 - 2004 Oldsmobile Silhouette, 2001 - 2004 Pontiac Montana, 2001 - 2003 Pontiac Grand Prix
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Chevrolet
Quantity2
Installation PositionUpstream & Downstream
Item LocatedUnited States
ConditionNew
item #10049T8R
Show less
Upstream & Downstream O2 Oxygen Sensor | 2-Pc Direct-Fit | Heated | A-Premium APOS1550
A-Premium®Part # APOS1550
Upstream & Downstream O2 Oxygen Sensor | 2-Pc Direct-Fit | Heated | A-Premium APOS1550
4.5647 Reviews
$55.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2006 - 2007 Buick Rendezvous, 2006 - 2007 Pontiac Torrent, 2006 - 2006 Chevrolet Impala, 2006 - 2006 Chevrolet Uplander, 2006 - 2006 Pontiac Montana, 2005 - 2007 Chevrolet Equinox, 2005 - 2006 Buick Lacrosse, 2005 - 2006 Buick Terraza, 2005 - 2006 Chevrolet Uplander, 2005 - 2006 Pontiac Montana, 2005 - 2005 Pontiac Grand Prix, 2005 - 2005 Pontiac Grand Prix
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Chevrolet
Quantity2
Installation PositionUpstream & Downstream
Item LocatedUnited States
ConditionNew
item #10049T7S
Show less
Upstream & Downstream O2 Oxygen Sensor | 2-Pc Direct-Fit | Heated | A-Premium APOS0210
A-Premium®Part # APOS0210
Upstream & Downstream O2 Oxygen Sensor | 2-Pc Direct-Fit | Heated | A-Premium APOS0210
4.5647 Reviews
$61.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2007 - 2012 Chevrolet Colorado, 2007 - 2012 Chevrolet Colorado, 2007 - 2012 GMC Canyon, 2007 - 2012 GMC Canyon, 2007 - 2009 Chevrolet Trailblazer, 2007 - 2009 GMC Envoy, 2007 - 2009 Saab 9-7X, 2007 - 2008 Isuzu Ascender, 2007 - 2008 Isuzu I-290, 2007 - 2008 Isuzu I-370, 2007 - 2007 Buick Rainier
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Chevrolet
Quantity2
Installation PositionUpstream & Downstream
Item LocatedUnited States
ConditionNew
item #10049WU3
Show less
Upstream & Downstream O2 Oxygen Sensor | 2-Pc Direct-Fit | Heated | A-Premium APOS1513
A-Premium®Part # APOS1513
Upstream & Downstream O2 Oxygen Sensor | 2-Pc Direct-Fit | Heated | A-Premium APOS1513
4.5647 Reviews
$57.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2001 - 2004 Pontiac Grand Am, 2001 - 2003 Chevrolet Malibu, 2001 - 2003 Oldsmobile Alero
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Chevrolet
Quantity2
Installation PositionUpstream & Downstream
Item LocatedUnited States
ConditionNew
item #10049YEH
Show less
Upstream & Downstream O2 Oxygen Sensor | 2-Pc Direct-Fit | Heated | A-Premium APOS1547
A-Premium®Part # APOS1547
Upstream & Downstream O2 Oxygen Sensor | 2-Pc Direct-Fit | Heated | A-Premium APOS1547
4.5647 Reviews
$55.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2007 - 2008 Chevrolet Malibu, 2007 - 2007 Saturn Sky, 2006 - 2007 Pontiac G6, 2006 - 2007 Pontiac Solstice
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Chevrolet
Quantity2
Installation PositionUpstream & Downstream
Item LocatedUnited States
ConditionNew
item #10049NE1
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Downstream O2 Oxygen Sensor | 1-Pc Direct-Fit | Heated | A-Premium APOS0306
A-Premium®Part # APOS0306
Downstream O2 Oxygen Sensor | 1-Pc Direct-Fit | Heated | A-Premium APOS0306
4.5647 Reviews
$30.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2011 - 2013 Chevrolet Caprice, 2009 - 2009 Pontiac G8, 2008 - 2009 Pontiac G8
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Chevrolet
Quantity1
Installation PositionDownstream
Item LocatedUnited States
ConditionNew
item #10031U3A
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Upstream & Downstream O2 Oxygen Sensor | 4-Pc Direct-Fit | Heated | A-Premium APOS1949
A-Premium®Part # APOS1949
Upstream & Downstream O2 Oxygen Sensor | 4-Pc Direct-Fit | Heated | A-Premium APOS1949
4.5647 Reviews
$119.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2009 - 2011 Cadillac CTS, 2008 - 2009 Chevrolet Equinox, 2008 - 2009 Pontiac Torrent, 2008 - 2008 Cadillac CTS, 2007 - 2009 Cadillac SRX, 2007 - 2009 Suzuki XL-7
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Chevrolet
Quantity4
Installation PositionUpstream & Downstream
Item LocatedUnited States
ConditionNew
item #10049T0T
Show less
Upstream & Downstream O2 Oxygen Sensor | 2-Pc Direct-Fit | Heated | A-Premium APOS1548
A-Premium®Part # APOS1548
Upstream & Downstream O2 Oxygen Sensor | 2-Pc Direct-Fit | Heated | A-Premium APOS1548
4.5647 Reviews
$62.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2009 - 2011 Chevrolet HHR, 2007 - 2009 Pontiac G5, 2007 - 2008 Pontiac G5, 2007 - 2007 Saturn Vue, 2006 - 2011 Chevrolet HHR, 2006 - 2008 Chevrolet Cobalt, 2006 - 2007 Saturn Ion, 2006 - 2007 Saturn Vue, 2005 - 2010 Chevrolet Cobalt, 2005 - 2007 Saturn Ion
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Chevrolet
Installation PositionUpstream & Downstream
Item LocatedUnited States
ConditionNew
item #10049S0E
Note
O2 Sensor - B1S1 Indicates Bank 1 Sensor 1, B1S2 Indicates Bank 1 Sensor 2.
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Upstream & Downstream O2 Oxygen Sensor | 2-Pc Direct-Fit | Heated | A-Premium APOS0877
A-Premium®Part # APOS0877
Upstream & Downstream O2 Oxygen Sensor | 2-Pc Direct-Fit | Heated | A-Premium APOS0877
4.5647 Reviews
$69.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2014 - 2014 Chevrolet Impala, 2013 - 2014 Chevrolet Malibu, 2011 - 2017 Buick Regal, 2011 - 2016 Buick LaCrosse
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Chevrolet
Installation PositionUpstream & Downstream
Item LocatedUnited States
ConditionNew
item #10049GLV
Note
O2 Sensor - B1S1 Indicates Bank 1 Sensor 1, B1S2 Indicates Bank 1 Sensor 2.
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O2 Oxygen Sensor | 1-Pc Direct-Fit | Heated | A-Premium OS039
A-Premium®Part # OS039
O2 Oxygen Sensor | 1-Pc Direct-Fit | Heated | A-Premium OS039
4.5647 Reviews
$26.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2016 - 2017 Chevrolet LCF 3500, 2016 - 2016 Chevrolet Express 3500, 2016 - 2016 GMC Savana 3500, 2015 - 2016 Chevrolet Express 4500, 2015 - 2015 Chevrolet Express 2500, 2015 - 2015 Chevrolet Express 2500, 2015 - 2015 Chevrolet Silverado 3500 HD, 2015 - 2015 GMC Savana 2500, 2015 - 2015 GMC Savana 2500, 2015 - 2015 GMC Sierra 3500 HD, 2014 - 2017 Chevrolet Caprice, 2014 - 2017 Chevrolet SS, 2014 - 2015 Chevrolet Camaro, 2014 - 2015 Chevrolet Camaro, 2014 - 2015 Chevrolet Express 3500, 2014 - 2015 Chevrolet Express 3500, 2014 - 2015 Chevrolet Express 3500, 2014 - 2015 Chevrolet Express 3500, 2014 - 2015 GMC Savana 3500, 2014 - 2015 GMC Savana 3500
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Chevrolet
Installation PositionCheck the fitment chart
Item LocatedUnited States
ConditionNew
item #10031G8P
Note
O2 Sensor - B1S1 Indicates Bank 1 Sensor 1, B1S2 Indicates Bank 1 Sensor 2, B2S1 Indicates Bank 2 Sensor 1, B2S2 Indicates Bank 2 Sensor 2.
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Downstream Driver & Passenger O2 Oxygen Sensor | 2-Pc Direct-Fit | Heated | A-Premium APOS0830
A-Premium®Part # APOS0830
Downstream Driver & Passenger O2 Oxygen Sensor | 2-Pc Direct-Fit | Heated | A-Premium APOS0830
4.5647 Reviews
$52.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2022 - 2023 Chevrolet Corvette, 2020 - 2021 Chevrolet Corvette, 2016 - 2018 Cadillac CT6, 2016 - 2017 Cadillac ATS, 2016 - 2017 Cadillac CTS, 2016 - 2017 Chevrolet Camaro
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Chevrolet
Installation PositionDownstream Driver & Passenger
Item LocatedUnited States
ConditionNew
item #1004AAQ2
Note
Oxygen Senor - B1S2 Indicates Bank 1 Sensor 2, B2S2 Indicates Bank 2 Sensor 2.
【Note-1】2016-2017 Cadillac ATS & CTS fit Naturally Aspirated, not Turbocharged.
【Note-2】Features a Oblong connector.
not compatible with square/Oval connectors.
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Upstream & Downstream O2 Oxygen Sensor | 4-Pc Direct-Fit | Heated | A-Premium OS107
A-Premium®Part # OS107
Upstream & Downstream O2 Oxygen Sensor | 4-Pc Direct-Fit | Heated | A-Premium OS107
4.5647 Reviews
$79.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2004 - 2004 Isuzu Axiom, 2004 - 2004 Isuzu Rodeo, 2002 - 2005 Chevrolet Blazer, 2002 - 2004 Isuzu Rodeo, 2002 - 2003 Isuzu Rodeo Sport, 2002 - 2002 Cadillac Escalade, 2002 - 2002 Chevrolet Avalanche 1500, 2002 - 2002 GMC Sonoma, 2002 - 2002 Honda Passport, 2000 - 2002 Chevrolet Silverado 1500, 2000 - 2002 Chevrolet Silverado 1500, 2000 - 2002 Chevrolet Suburban 1500, 2000 - 2002 Chevrolet Tahoe, 2000 - 2002 Chevrolet Tahoe, 2000 - 2002 GMC Sierra 1500, 2000 - 2002 GMC Sierra 1500, 2000 - 2002 GMC Yukon, 2000 - 2002 GMC Yukon, 2000 - 2002 GMC Yukon XL 1500, 2000 - 2000 Chevrolet Silverado 2500
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Chevrolet
Installation PositionUpstream & Downstream
Item LocatedUnited States
ConditionNew
item #10030VD5
Note
This item only fit for Canada Built Vehicle: Avalanche / Silverado / Suburban/ Tahoe/ Sierra/ Yukon/ Yukon XL.
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Upstream & Downstream O2 Oxygen Sensor | 2-Pc Direct-Fit | Heated | A-Premium APOS1299
A-Premium®Part # APOS1299
Upstream & Downstream O2 Oxygen Sensor | 2-Pc Direct-Fit | Heated | A-Premium APOS1299
4.5647 Reviews
$80.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2015 - 2018 Chevrolet City Express, 2013 - 2021 Nissan NV200
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Chevrolet
Quantity2
Installation PositionUpstream & Downstream
Item LocatedUnited States
ConditionNew
item #1001GP5C
Show less
O2 Oxygen Sensor | 1-Pc Direct-Fit | Heated | A-Premium OS030
A-Premium®Part # OS030
O2 Oxygen Sensor | 1-Pc Direct-Fit | Heated | A-Premium OS030
4.5647 Reviews
$30.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 1995 - 1995 Chevrolet C2500, 1994 - 1995 GMC C2500, 1994 - 1994 Chevrolet Blazer, 1994 - 1994 Chevrolet C1500, 1994 - 1994 Chevrolet C1500, 1994 - 1994 Chevrolet C1500, 1994 - 1994 Chevrolet C1500 Suburban, 1994 - 1994 Chevrolet C2500, 1994 - 1994 Chevrolet C2500, 1994 - 1994 Chevrolet C2500, 1994 - 1994 Chevrolet C2500 Suburban, 1994 - 1994 Chevrolet K1500, 1994 - 1994 Chevrolet K1500, 1994 - 1994 Chevrolet K1500, 1994 - 1994 Chevrolet K1500 Suburban, 1994 - 1994 Chevrolet K2500, 1994 - 1994 Chevrolet K2500, 1994 - 1994 Chevrolet K2500, 1994 - 1994 Chevrolet K2500 Suburban, 1994 - 1994 GMC C1500
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Chevrolet
Installation PositionCheck the fitment chart
Item LocatedUnited States
ConditionNew
item #100300WL
Note
For Regal & Lumina & Cutlass Supreme & Pontiac fits with California Emissions, not fit with Federal Emissions.
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Upstream & Downstream O2 Oxygen Sensor | 2-Pc Direct-Fit | Heated | A-Premium APOS0891
A-Premium®Part # APOS0891
Upstream & Downstream O2 Oxygen Sensor | 2-Pc Direct-Fit | Heated | A-Premium APOS0891
4.5647 Reviews
$55.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2006 - 2006 Buick Rainier, 2006 - 2006 Chevrolet Colorado, 2006 - 2006 Chevrolet Trailblazer, 2006 - 2006 Chevrolet Trailblazer EXT, 2006 - 2006 GMC Canyon, 2006 - 2006 GMC Envoy, 2006 - 2006 GMC Envoy XL, 2006 - 2006 Isuzu Ascender, 2006 - 2006 Isuzu i-350, 2006 - 2006 Saab 9-7X
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Chevrolet
Quantity2
Installation PositionUpstream & Downstream
Item LocatedUnited States
ConditionNew
item #10049P9R
Show less
Downstream O2 Oxygen Sensor | 2-Pc Direct-Fit | Heated | A-Premium APOS0386
A-Premium®Part # APOS0386
Downstream O2 Oxygen Sensor | 2-Pc Direct-Fit | Heated | A-Premium APOS0386
4.5647 Reviews
$62.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2000 - 2003 Chevrolet Malibu, 1999 - 2004 Pontiac Grand Am, 1999 - 2003 Oldsmobile Alero, 1997 - 2003 Chevrolet Corvette, 1997 - 1999 Oldsmobile Cutlass, 1997 - 1998 Chevrolet Malibu
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Chevrolet
Quantity2
Installation PositionDownstream
Item LocatedUnited States
ConditionNew
item #1004ADD7
Show less
Upstream & Downstream O2 Oxygen Sensor | 2-Pc Direct-Fit | Heated | A-Premium APOS0908
A-Premium®Part # APOS0908
Upstream & Downstream O2 Oxygen Sensor | 2-Pc Direct-Fit | Heated | A-Premium APOS0908
4.5647 Reviews
$68.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2009 - 2011 Chevrolet Aveo, 2009 - 2011 Chevrolet Aveo5, 2009 - 2010 Pontiac G3
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Chevrolet
Quantity2
Installation PositionUpstream & Downstream
Item LocatedUnited States
ConditionNew
item #1001H3A4
Show less
Upstream & Downstream O2 Oxygen Sensor | 2-Pc Direct-Fit | Heated | A-Premium OS134
A-Premium®Part # OS134
Upstream & Downstream O2 Oxygen Sensor | 2-Pc Direct-Fit | Heated | A-Premium OS134
4.5647 Reviews
$41.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2012 - 2015 Chevrolet Captiva Sport, 2012 - 2014 Chevrolet Orlando, 2010 - 2014 Chevrolet Equinox, 2010 - 2014 GMC Terrain, 2010 - 2010 Pontiac G6, 2009 - 2009 Pontiac G6, 2008 - 2010 Chevrolet Malibu, 2008 - 2010 Chevrolet Malibu, 2008 - 2010 Saturn Sky, 2008 - 2010 Saturn Vue, 2008 - 2009 Chevrolet Malibu, 2008 - 2009 Pontiac Solstice, 2008 - 2008 Pontiac G6, 2007 - 2009 Saturn Aura
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Chevrolet
Quantity2
Installation PositionUpstream & Downstream
Item LocatedUnited States
ConditionNew
item #10031L2S
Show less
Upstream & Downstream O2 Oxygen Sensor | 4-Pc Direct-Fit | Heated | A-Premium OS180
A-Premium®Part # OS180
Upstream & Downstream O2 Oxygen Sensor | 4-Pc Direct-Fit | Heated | A-Premium OS180
4.5647 Reviews
$56.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2003 - 2005 Cadillac Escalade, 2003 - 2005 Chevrolet Avalanche 1500, 2003 - 2005 Chevrolet Silverado 1500, 2003 - 2005 Chevrolet Suburban 1500, 2003 - 2005 Chevrolet Tahoe, 2003 - 2005 GMC Sierra 1500, 2003 - 2005 GMC Yukon, 2003 - 2005 GMC Yukon XL 1500
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Chevrolet
Installation PositionUpstream & Downstream
Item LocatedUnited States
ConditionNew
item #10031CDT
Note
Oxygen Senor - B1S1 Indicates Bank 1 Sensor 1, B1S2 Indicates Bank 1 Sensor 2, B2S1 Indicates Bank 2 Sensor 1, B2S2 Indicates Bank 2 Sensor 2.
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Page 2 of 42

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.

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