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Chevrolet Oxygen Sensors

2057 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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Denso 234-4250 Oxygen Sensor, DownstreamDenso 234-4250 Oxygen Sensor, Downstream
DensoPart # 234-4250
Denso 234-4250 Oxygen Sensor, Downstream
4.29 Reviews
$54.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2009-2010 Chevrolet Malibu, 2009-2010 Pontiac G6, 2009-2009 Saturn Aura, 2008-2008 Chevrolet Malibu, 2008-2008 Pontiac G6, 2008-2008 Saturn Aura
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Vehicle: Chevrolet
Quantity1
Installation PositionDownstream
Item LocatedUnited States
Part interchange
234-4250, 21064, 213-4321, 213-4643, 18023, 15254, ES20383, 12617907, 
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item #1004Z1RT
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Oxygen Sensor - Downstream - Denso 234-4294
DensoPart # 234-4294
Oxygen Sensor - Downstream - Denso 234-4294
4.29 Reviews
$51.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2009-2012 Chevrolet Colorado, 2009-2012 Chevrolet Colorado, 2009-2012 GMC Canyon, 2009-2012 GMC Canyon, 2009-2010 Hummer H3T, 2008-2010 Hummer H3, 2008-2009 Saturn Vue, 2008-2009 Saturn Vue, 2008-2008 Buick Enclave, 2008-2008 Chevrolet Malibu, 2008-2008 Pontiac G6, 2008-2008 Saturn Aura, 2007-2009 Chevrolet Trailblazer, 2007-2009 GMC Envoy, 2007-2009 Saab 9-7x, 2007-2008 Chevrolet Colorado, 2007-2008 GMC Acadia, 2007-2008 GMC Canyon, 2007-2008 Isuzu Ascender, 2007-2008 Isuzu i-290
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Chevrolet
Quantity1
Installation PositionDownstream
Item LocatedUnited States
Part interchange
234-4294, 21064, 21058, 12604575, 12604538, 8126045750, 8126045380, 213-3537, 
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item #1004Z4Z0
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Oxygen Sensor - Denso 234-4821
DensoPart # 234-4821
Oxygen Sensor - Denso 234-4821
4.29 Reviews
$81.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2021-2021 Chevrolet Trax, 2017-2021 Buick Encore, 2016-2016 Buick Encore, 2016-2016 Buick Encore, 2016-2016 Buick Encore, 2016-2016 Buick Encore, 2016-2016 Buick Encore, 2016-2016 Buick Encore, 2015-2020 Chevrolet Trax, 2013-2015 Buick Encore, 2011-2011 Saab 9-4X, 2011-2011 Saab 9-5, 2010-2011 Cadillac SRX, 2010-2010 Saab 9-5, 2008-2009 Pontiac G8, 2006-2009 Saab 9-3, 2004-2004 Buick Rendezvous, 2004-2004 Cadillac CTS, 2003-2003 Cadillac CTS, 2002-2003 Saturn Vue
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Chevrolet
Quantity1
Item LocatedUnited States
Part interchange
234-4821, 25727, 12619211, 93186115, OS1526, OS1525, 213-1516, 213-1582, 
...View more
item #1005HL0V
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Air / Fuel Ratio Sensor - Upstream - Denso 234-5007
DensoPart # 234-5007
Air / Fuel Ratio Sensor - Upstream - Denso 234-5007
4.29 Reviews
$105.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2022-2022 Kia Forte, 2021-2021 Kia Forte, 2016-2018 Kia Optima, 2016-2016 Hyundai Veloster, 2015-2017 Hyundai Sonata, 2015-2017 Hyundai Veloster, 2015-2017 Hyundai Veloster, 2014-2018 Kia Forte5, 2014-2017 Kia Forte Koup, 2008-2010 Chevrolet Cobalt, 2008-2010 Chevrolet HHR, 2007-2010 Saturn Sky, 2007-2009 Pontiac Solstice
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Chevrolet
Quantity1
Installation PositionUpstream
Item LocatedUnited States
Part interchange
234-5007, 24325, 213-3135, 213-3240, 213-3844, OS2369, 17319, 15388, 
...View more
item #1002H8Q8
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Denso 234-4599 Oxygen Sensor
DensoPart # 234-4599
Denso 234-4599 Oxygen Sensor
4.29 Reviews
$90.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2015-2018 Chevrolet City Express, 2014-2014 INFINITI QX60, 2014-2014 Nissan Pathfinder, 2013-2020 Nissan NV200, 2013-2014 Nissan Altima, 2013-2014 Nissan Murano, 2013-2013 INFINITI JX35, 2013-2013 Nissan Pathfinder, 2012-2014 Nissan Quest, 2012-2012 Nissan Murano
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Chevrolet
Quantity1
Item LocatedUnited States
Part interchange
234-4599, 226A03NT0A, 24465, 19316344, 350-34701, 250-241108
item #1005HPY2
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Oxygen Sensor - Denso 234-4673
DensoPart # 234-4673
Oxygen Sensor - Denso 234-4673
4.29 Reviews
$53.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2017-2017 Buick Verano, 2016-2017 GMC Terrain, 2016-2016 Buick Verano, 2015-2017 Chevrolet Equinox, 2014-2017 Buick Regal, 2014-2014 Chevrolet Impala, 2012-2015 Buick Verano, 2012-2013 Chevrolet Orlando, 2011-2013 Buick Regal, 2011-2011 Saab 9-5, 2010-2016 Buick LaCrosse, 2010-2014 Chevrolet Malibu, 2010-2010 Buick Allure, 2009-2009 Chevrolet Malibu, 2009-2009 Chevrolet Malibu, 2009-2009 Chevrolet Malibu, 2009-2009 Chevrolet Malibu, 2009-2009 Pontiac G6, 2009-2009 Saturn Aura, 2009-2009 Saturn Aura
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Chevrolet
Quantity1
Item LocatedUnited States
Part interchange
234-4673, 21555, 12616502, 213-4299, 213-1162, 213-4116, OS1689, 15114, 
...View more
item #1005HPZ5
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Oxygen Sensor - Upstream - Denso 234-3094
DensoPart # 234-3094
Oxygen Sensor - Upstream - Denso 234-3094
4.29 Reviews
$49.99
Low stock: Only 5 left
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 1993-1993 Buick Regal, 1993-1993 Chevrolet Lumina, 1993-1993 Oldsmobile Cutlass Supreme, 1993-1993 Pontiac Grand Prix, 1993-1993 Pontiac Grand Prix, 1993-1993 Pontiac Grand Prix, 1992-1994 Chevrolet P30, 1992-1994 GMC P3500, 1992-1993 Chevrolet Astro, 1992-1993 Chevrolet Blazer, 1992-1993 Chevrolet C1500, 1992-1993 Chevrolet C1500, 1992-1993 Chevrolet C1500, 1992-1993 Chevrolet C1500 Suburban, 1992-1993 Chevrolet C2500, 1992-1993 Chevrolet C2500, 1992-1993 Chevrolet C2500, 1992-1993 Chevrolet C2500 Suburban, 1992-1993 Chevrolet C3500, 1992-1993 Chevrolet Caprice
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Chevrolet
Quantity1
Installation PositionUpstream
Item LocatedUnited States
Part interchange
234-3094, 21003, 213-16, 213-632, OS120, 13077, ES10005, SG91, 
...View more
item #1003RXKG
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Denso 234-4000 Oxygen Sensor
DensoPart # 234-4000
Denso 234-4000 Oxygen Sensor
4.29 Reviews
$71.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2004-2004 Buick Rendezvous, 2004-2004 Chevrolet Impala, 2004-2004 Chevrolet Monte Carlo, 2003-2003 Buick LeSabre, 2003-2003 Chevrolet Corvette, 2003-2003 Isuzu Rodeo Sport, 2002-2004 Oldsmobile Alero, 2002-2004 Pontiac Grand Am, 2002-2003 Buick Regal, 2002-2003 Buick Rendezvous, 2002-2003 Chevrolet S10, 2002-2003 GMC Sonoma, 2002-2002 Cadillac Escalade, 2002-2002 Cadillac Escalade, 2002-2002 Cadillac Escalade EXT, 2002-2002 Chevrolet Avalanche 1500, 2002-2002 Chevrolet Camaro, 2002-2002 Chevrolet Camaro, 2002-2002 Chevrolet Camaro, 2002-2002 Chevrolet Cavalier
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Chevrolet
Quantity1
Item LocatedUnited States
Part interchange
234-4000, 13470, 15503, 15702, 15058, 13111, 13027, 13326, 
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item #1003S484
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Denso 234-4341 Oxygen Sensor
DensoPart # 234-4341
Denso 234-4341 Oxygen Sensor
4.29 Reviews
$75.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2008-2012 Chevrolet Malibu, 2008-2009 Pontiac G6, 2008-2009 Saturn Aura, 2007-2010 Cadillac STS, 2007-2009 Cadillac SRX, 2006-2009 Cadillac STS
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Chevrolet
Quantity1
Item LocatedUnited States
Part interchange
234-4341, 21566, 213-4227, 213-4156, 213-3629, 15165, ES20134, 12608663, 
...View more
item #1004Z2S3
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Denso 234-4528 Oxygen Sensor, Downstream
DensoPart # 234-4528
Denso 234-4528 Oxygen Sensor, Downstream
4.29 Reviews
$60.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2018-2020 Chevrolet Sonic, 2016-2016 Chevrolet Cruze Limited, 2014-2015 Chevrolet Cruze, 2014-2015 Chevrolet Cruze, 2013-2014 Chevrolet Trax, 2012-2017 Chevrolet Sonic, 2012-2017 Chevrolet Sonic, 2011-2013 Chevrolet Cruze
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Chevrolet
Quantity1
Installation PositionDownstream
Item LocatedUnited States
Part interchange
234-4528, 25727, 213-4698, 16736, 55572216, 55574136, ES20011, 350-34491, 
...View more
item #1005HRTT
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Oxygen Sensor - Denso 234-4254
DensoPart # 234-4254
Oxygen Sensor - Denso 234-4254
4.29 Reviews
$54.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2010-2011 Chevrolet Impala, 2008-2012 Chevrolet Malibu, 2008-2009 Chevrolet Impala, 2008-2009 Chevrolet Impala, 2008-2009 Pontiac G6, 2008-2009 Saturn Aura
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Chevrolet
Quantity1
Item LocatedUnited States
Part interchange
234-4254, 21568, 213-4226, 18079, 12608662, ES20320, 350-34494, 250-24736
item #1004YYZ0
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Denso 234-4815 Oxygen Sensor
DensoPart # 234-4815
Denso 234-4815 Oxygen Sensor
4.29 Reviews
$74.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2016-2017 Chevrolet Equinox, 2016-2016 Cadillac SRX, 2016-2016 Chevrolet Impala Limited, 2015-2017 GMC Terrain, 2015-2015 Cadillac SRX, 2015-2015 Chevrolet Equinox, 2015-2015 Chevrolet Impala Limited, 2014-2016 Buick LaCrosse, 2014-2016 Cadillac ELR, 2014-2014 Cadillac SRX, 2014-2014 Chevrolet Impala Limited, 2013-2014 Chevrolet Equinox, 2013-2014 GMC Terrain, 2013-2013 Buick LaCrosse, 2013-2013 Cadillac SRX, 2012-2013 Chevrolet Impala, 2012-2012 Cadillac SRX, 2012-2012 Chevrolet Captiva Sport, 2011-2015 Chevrolet Volt, 2011-2011 Saab 9-4X
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Chevrolet
Quantity1
Item LocatedUnited States
Part interchange
234-4815, 21556, 213-4553, 213-4406, 213-1695, 16089, 16454, 16070, 
...View more
item #1005HP0S
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Oxygen Sensor - Upstream - Denso 234-4342
DensoPart # 234-4342
Oxygen Sensor - Upstream - Denso 234-4342
4.29 Reviews
$55.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2007-2008 Chevrolet Malibu, 2007-2008 Pontiac G5, 2007-2007 Pontiac Solstice, 2007-2007 Saturn Sky, 2007-2007 Saturn Vue, 2006-2008 Chevrolet Cobalt, 2006-2007 Pontiac G6, 2006-2007 Saturn Ion, 2006-2007 Saturn Vue, 2006-2006 Chevrolet HHR, 2006-2006 Pontiac Solstice, 2005-2006 Chevrolet Cobalt, 2005-2006 Pontiac Pursuit, 2005-2006 Saturn Ion
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Chevrolet
Quantity1
Installation PositionUpstream
Item LocatedUnited States
Part interchange
234-4342, 21546, 213-3541, 213-1693, 15152, SG1855, ES20007, 12580827, 
...View more
item #1004Z4G0
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Oxygen Sensor - Upstream - Denso 234-4119
DensoPart # 234-4119
Oxygen Sensor - Upstream - Denso 234-4119
4.29 Reviews
$64.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2005-2005 GMC Envoy, 2005-2005 Saab 9-7x, 2004-2005 Buick Rainier, 2004-2005 Chevrolet Colorado, 2004-2005 Chevrolet Trailblazer, 2004-2005 Chevrolet Trailblazer EXT, 2004-2005 GMC Canyon, 2004-2005 GMC Envoy XL, 2004-2005 GMC Envoy XUV, 2004-2005 Isuzu Ascender, 2004-2004 GMC Envoy, 2004-2004 Oldsmobile Bravada
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Chevrolet
Quantity1
Installation PositionUpstream
Item LocatedUnited States
Part interchange
234-4119, 21054, 8125869960, 12586996, 213-1698, 213-1570, OS2242, OS2247, 
...View more
item #1004YZEE
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Denso 234-4285 Oxygen Sensor
DensoPart # 234-4285
Denso 234-4285 Oxygen Sensor
4.29 Reviews
$43.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2007-2007 Chevrolet Express 1500, 2007-2007 Chevrolet Express 2500, 2007-2007 Chevrolet Express 3500, 2007-2007 Chevrolet Express 3500, 2007-2007 GMC Savana 1500, 2007-2007 GMC Savana 2500, 2007-2007 GMC Savana 2500, 2007-2007 GMC Savana 3500, 2006-2008 Chevrolet Malibu, 2006-2007 Chevrolet Express 2500, 2006-2007 GMC Savana 3500, 2006-2007 Pontiac G6, 2006-2006 Buick Rainier, 2006-2006 Chevrolet Express 2500, 2006-2006 Chevrolet SSR, 2006-2006 Chevrolet Trailblazer, 2006-2006 Chevrolet Trailblazer, 2006-2006 Chevrolet Trailblazer EXT, 2006-2006 GMC Envoy, 2006-2006 GMC Envoy XL
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Chevrolet
Quantity1
Item LocatedUnited States
Part interchange
234-4285, 21044, 21545, 8192098050, 8125786240, 8245773030, 12578624, 19209805, 
...View more
item #1004Z6D7
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Denso 234-4527 Oxygen Sensor
DensoPart # 234-4527
Denso 234-4527 Oxygen Sensor
4.29 Reviews
$92.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2016-2016 Chevrolet Cruze Limited, 2012-2018 Chevrolet Sonic, 2011-2015 Chevrolet Cruze, 2011-2011 Saab 9-5, 2010-2010 Saab 9-5
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Chevrolet
Quantity1
Item LocatedUnited States
Part interchange
234-4527, 25653, 55568696, 213-4699, 16349, 16735, 55572215, 250-24648, 
...View more
item #1005HP5Y
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Oxygen Sensor - Downstream - Denso 234-4648
DensoPart # 234-4648
Oxygen Sensor - Downstream - Denso 234-4648
4.29 Reviews
$83.99
Low stock: Only 2 left
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 1999-2000 Chevrolet Tracker, 1999-2000 Suzuki Vitara, 1998-2001 Chevrolet Metro, 1996-2001 Suzuki Swift, 1996-2000 Pontiac Firefly, 1996-1997 Geo Metro
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Chevrolet
Quantity1
Installation PositionDownstream
Item LocatedUnited States
Part interchange
234-4648, 1821350G11, 1821365D20, 1821350G10, 1821365D21, 21524, 213-4282, 213-1676, 
...View more
item #1005HLUP
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Denso 234-4650 Oxygen Sensor
DensoPart # 234-4650
Denso 234-4650 Oxygen Sensor
4.29 Reviews
$50.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2004-2004 Buick Rainier, 2004-2004 Buick Rendezvous, 2004-2004 GMC Envoy XUV, 2004-2004 Isuzu Axiom, 2004-2004 Isuzu Rodeo, 2003-2004 Chevrolet SSR, 2003-2004 Chevrolet Trailblazer EXT, 2003-2004 GMC Envoy XL, 2003-2004 Isuzu Ascender, 2003-2003 Isuzu Rodeo, 2003-2003 Isuzu Rodeo Sport, 2002-2003 Buick Rendezvous, 2002-2002 Cadillac Escalade, 2002-2002 Chevrolet Avalanche 1500, 2002-2002 Chevrolet Blazer, 2002-2002 Chevrolet S10, 2002-2002 Chevrolet Silverado 1500, 2002-2002 Chevrolet Silverado 1500, 2002-2002 Chevrolet Tahoe, 2002-2002 Chevrolet Tahoe
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Chevrolet
Quantity1
Item LocatedUnited States
Part interchange
234-4650, 8972873520, 21047, 21516, 8125671270, 213-819, 213-817, 213-802, 
...View more
item #1005HQQS
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Denso 234-4647 Oxygen Sensor
DensoPart # 234-4647
Denso 234-4647 Oxygen Sensor
4.29 Reviews
$45.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2007-2007 Buick Rendezvous, 2007-2007 Saturn Aura, 2006-2008 Buick Lucerne, 2006-2007 Chevrolet Malibu, 2006-2007 Pontiac G6, 2006-2007 Pontiac Torrent, 2006-2006 Buick Rendezvous, 2005-2007 Buick Allure, 2005-2007 Buick LaCrosse, 2005-2007 Buick Terraza, 2005-2007 Chevrolet Corvette, 2005-2007 Chevrolet Equinox, 2005-2007 Chevrolet Impala, 2005-2007 Chevrolet Monte Carlo, 2005-2007 Chevrolet Uplander, 2005-2007 Pontiac Montana, 2005-2007 Saturn Relay, 2005-2005 Buick Century, 2005-2005 Buick Rendezvous, 2005-2005 Chevrolet Venture
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Chevrolet
Quantity1
Item LocatedUnited States
Part interchange
234-4647, 21048, 8125671630, OS2132, OS2008, OS2012, OS1473, OS2011, 
...View more
item #1005HR4K
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Oxygen Sensor - Upstream - Denso 234-4290
DensoPart # 234-4290
Oxygen Sensor - Upstream - Denso 234-4290
4.29 Reviews
$141.99
Low stock: Only 1 left
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, 2009-2009 Pontiac G3 Wave
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Chevrolet
Quantity1
Installation PositionUpstream
Item LocatedUnited States
Part interchange
234-4290, 25712, 96951465, ES20144, 250-24851, 350-34262
item #1004Z6KN
Show less
Page 89 of 103

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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