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Porsche Oxygen Sensors

341 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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Oxygen Sensor - Denso 234-4474Oxygen Sensor - Denso 234-4474
DensoPart # 234-4474
Oxygen Sensor - Denso 234-4474
4.29 Reviews
$144.99
Low stock: Only 1 left
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3-year warranty
90 days free return
Fits 2016-2016 Porsche Panamera, 2016-2016 Porsche Panamera, 2016-2016 Porsche Panamera, 2016-2016 Porsche Panamera, 2015-2016 Porsche Panamera, 2014-2016 Porsche Cayman, 2014-2016 Porsche Panamera, 2014-2016 Porsche Panamera, 2014-2014 Porsche Panamera, 2013-2016 Porsche Boxster, 2013-2015 Porsche Panamera, 2012-2016 Porsche Panamera, 2012-2013 Porsche Panamera, 2011-2013 Porsche Panamera, 2010-2012 Porsche Panamera
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Vehicle: Porsche
Quantity1
Item LocatedUnited States
Part interchange
234-4474, 25714, 16301, 16140, 350-34108, 250-24934, 9A160619301, 97060617600, 
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item #1005HLA7
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Oxygen Sensor - Denso 234-3000
DensoPart # 234-3000
Oxygen Sensor - Denso 234-3000
4.29 Reviews
$53.99
Low stock: Only 2 left
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3-year warranty
90 days free return
Fits 2001-2002 Mazda Millenia, 2000-2000 Mazda Millenia, 1999-1999 Mazda Millenia, 1998-1999 Mazda 626, 1998-1998 Mazda Millenia, 1997-1997 Ford Probe, 1997-1997 Mazda 626, 1997-1997 Mazda Millenia, 1997-1997 Mazda MX-6, 1996-1998 Volkswagen Golf, 1996-1997 Kia Sephia, 1996-1996 Ford Probe, 1996-1996 Mazda 626, 1996-1996 Mazda Millenia, 1996-1996 Mazda Millenia, 1996-1996 Mazda MX-3, 1996-1996 Mazda MX-6, 1995-1998 Mazda Protege, 1995-1996 Mazda Millenia, 1995-1995 Chevrolet Blazer
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Porsche
Quantity1
Item LocatedUnited States
Part interchange
234-3000, 213-1241, 213-1242, OS516, OS521, 13589, 13936, 13508, 
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item #1002HP48
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Oxygen Sensor - Downstream - Denso 234-4496
DensoPart # 234-4496
Oxygen Sensor - Downstream - Denso 234-4496
4.29 Reviews
$122.99
Low stock: Only 3 left
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3-year warranty
90 days free return
Fits 2017-2018 Porsche Cayenne, 2016-2018 Porsche Cayenne, 2016-2018 Porsche Cayenne, 2016-2017 Porsche Cayenne, 2015-2015 Porsche Cayenne, 2015-2015 Porsche Cayenne, 2011-2014 Porsche Cayenne, 2011-2012 Porsche Cayman, 2011-2011 Porsche 911, 2011-2011 Porsche 911, 2010-2011 Porsche 911, 2007-2008 Porsche 911, 2007-2008 Porsche 911, 2006-2010 Porsche Cayman, 2005-2012 Porsche Boxster
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Porsche
Quantity1
Installation PositionDownstream
Item LocatedUnited States
Part interchange
234-4496, 25659, 25738, 16207, 16147, 16810, 16443, 250-24682, 
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item #1005HKRY
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Air / Fuel Ratio Sensor - Denso 234-5119
DensoPart # 234-5119
Air / Fuel Ratio Sensor - Denso 234-5119
4.29 Reviews
$175.99
Low stock: Only 5 left
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2017-2018 Porsche Cayenne, 2016-2018 Porsche Cayenne, 2016-2016 Porsche Cayenne, 2016-2016 Porsche Panamera, 2015-2015 Bentley Continental, 2014-2014 Porsche Panamera, 2012-2016 Porsche Panamera, 2012-2016 Porsche Panamera, 2012-2013 Porsche Panamera, 2011-2014 Porsche Cayenne, 2011-2014 Porsche Cayenne, 2010-2011 Porsche Panamera, 2009-2010 Volkswagen Beetle, 2008-2009 Audi A8 Quattro, 2008-2009 Audi S8, 2008-2008 Volkswagen Beetle, 2008-2008 Volkswagen Beetle, 2008-2008 Volkswagen Beetle, 2008-2008 Volkswagen Beetle, 2008-2008 Volkswagen Beetle
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Porsche
Quantity1
Item LocatedUnited States
Part interchange
234-5119, 24347, 24342, 24349, 24361, 1K0998262P, 06A906262EE, 07C906262CJ, 
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item #1002H81N
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Denso 234-5102 Oxygen Sensor
DensoPart # 234-5102
Denso 234-5102 Oxygen Sensor
4.29 Reviews
$152.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2018-2018 Porsche Macan, 2018-2018 Porsche Macan, 2018-2018 Porsche Macan, 2017-2018 Porsche Cayenne, 2017-2017 Porsche Macan, 2017-2017 Porsche Macan, 2016-2018 Porsche Cayenne, 2016-2018 Porsche Cayenne, 2016-2018 Volkswagen Passat, 2016-2016 Porsche Cayman, 2016-2016 Porsche Cayman, 2015-2016 Audi A8 Quattro, 2015-2016 Porsche Macan, 2015-2015 Bentley Continental, 2015-2015 Porsche 918 Spyder, 2015-2015 Porsche Cayenne, 2015-2015 Volkswagen Passat, 2015-2015 Volkswagen Passat, 2015-2015 Volkswagen Passat, 2014-2015 Porsche Cayman
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Porsche
Quantity1
Item LocatedUnited States
Part interchange
234-5102, 24350, 24361, 24341, 24342, 24324, 27058, 07C906262CF, 
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item #1002HAX4
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Air / Fuel Ratio Sensor - Denso 234-5023
DensoPart # 234-5023
Air / Fuel Ratio Sensor - Denso 234-5023
4.29 Reviews
$163.99
Low stock: Only 1 left
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3-year warranty
90 days free return
Fits 2016-2016 Porsche Panamera, 2015-2016 Porsche Panamera, 2015-2016 Porsche Panamera, 2015-2016 Porsche Panamera, 2013-2014 Porsche Cayenne, 2012-2012 Porsche 911, 2011-2012 Porsche Cayman, 2011-2011 Porsche 911, 2011-2011 Porsche 911, 2011-2011 Porsche 911, 2011-2011 Porsche 911, 2011-2011 Porsche 911, 2011-2011 Porsche 911, 2011-2011 Porsche 911, 2011-2011 Porsche 911, 2011-2011 Porsche 911, 2011-2011 Porsche 911, 2010-2010 Porsche 911, 2010-2010 Porsche Cayenne, 2009-2012 Porsche Boxster
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Porsche
Quantity1
Item LocatedUnited States
Part interchange
234-5023, 24339, 17156, 17154, 17224, 17222, 17228, 250-25031, 
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item #1002HA23
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Air / Fuel Ratio Sensor - Denso 234-5125
DensoPart # 234-5125
Air / Fuel Ratio Sensor - Denso 234-5125
4.29 Reviews
$121.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2009-2009 Audi TT Quattro, 2008-2010 Porsche Cayenne, 2008-2008 Audi TT Quattro, 2008-2008 Volkswagen R32, 2007-2010 Audi Q7, 2007-2010 Volkswagen Touareg, 2007-2008 Volkswagen Eos, 2006-2009 Audi A3 Quattro
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Porsche
Quantity1
Item LocatedUnited States
Part interchange
234-5125, 24325, 24328, 022906262CA, 1K0998262K, 213-3933, 17178, 250-25034, 
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item #1002H8XW
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Oxygen Sensor - Denso 234-4808
DensoPart # 234-4808
Oxygen Sensor - Denso 234-4808
4.29 Reviews
$122.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2007-2010 Volkswagen Golf City, 2007-2009 Audi A8 Quattro, 2007-2009 Audi A8 Quattro, 2007-2009 Volkswagen Jetta City, 2005-2006 Audi A4 Quattro, 2005-2005 Audi A4, 2004-2006 Audi TT Quattro, 2004-2006 Porsche Cayenne, 2004-2004 Volkswagen R32, 2002-2006 Volkswagen Golf, 2001-2005 Volkswagen Beetle, 2001-2005 Volkswagen Jetta
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Porsche
Quantity1
Item LocatedUnited States
Part interchange
234-4808, 25656, 25605, 25604, OS1924, OS1655, 06A906262BG, 1K0998262R, 
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item #1005HP51
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Oxygen Sensor - Denso 234-4231
DensoPart # 234-4231
Oxygen Sensor - Denso 234-4231
4.29 Reviews
$107.99
Low stock: Only 1 left
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2018-2018 Porsche Cayenne, 2018-2018 Porsche Cayenne, 2017-2017 Porsche Cayenne, 2016-2017 Porsche Cayenne, 2011-2014 Porsche Cayenne, 2010-2010 Audi A5, 2010-2010 Audi A5 Quattro, 2009-2010 Audi A4, 2009-2010 Audi A4 Quattro
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Porsche
Quantity1
Item LocatedUnited States
Part interchange
234-4231, 25729, 030906262R, 06H906262A, 16002, ES20365, 250-24955, 350-34227, 
...View more
item #1004YX9Z
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Oxygen Sensor - Downstream - Denso 234-4269
DensoPart # 234-4269
Oxygen Sensor - Downstream - Denso 234-4269
4.29 Reviews
$123.99
Low stock: Only 2 left
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3-year warranty
90 days free return
Fits 2001-2002 Porsche Boxster, 2000-2000 Porsche Boxster, 2000-2000 Porsche Boxster
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Porsche
Quantity1
Installation PositionDownstream
Item LocatedUnited States
Part interchange
234-4269, 25652, 213-3878, 15183, SG185, 250-24647, 350-34555, 98660612801
item #1004YZ3S
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Oxygen Sensor - Denso 234-4475
DensoPart # 234-4475
Oxygen Sensor - Denso 234-4475
4.29 Reviews
$119.99
Low stock: Only 3 left
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2019-2019 Porsche 911, 2018-2018 Porsche 911, 2018-2018 Porsche 911, 2018-2018 Porsche 911, 2018-2018 Porsche 911, 2017-2017 Porsche 911, 2016-2016 Porsche 911, 2016-2016 Porsche Panamera, 2015-2016 Porsche 911, 2015-2016 Porsche 911, 2015-2016 Porsche Panamera, 2015-2016 Porsche Panamera, 2015-2016 Porsche Panamera, 2015-2016 Porsche Panamera, 2015-2016 Porsche Panamera, 2015-2015 Porsche 918 Spyder, 2014-2016 Porsche 911, 2014-2016 Porsche 911, 2014-2016 Porsche 911, 2014-2016 Porsche 911
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Porsche
Quantity1
Item LocatedUnited States
Part interchange
234-4475, 25722, 25719, 16177, 16285, 16145, 16201, 350-34558, 
...View more
item #1005HQCN
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Oxygen Sensor - Denso 234-4182
DensoPart # 234-4182
Oxygen Sensor - Denso 234-4182
4.29 Reviews
$94.99
Low stock: Only 1 left
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2001-2001 Porsche 911, 1999-2000 Porsche 911, 1996-1998 Saab 9000, 1996-1997 Porsche 911, 1996-1997 Saab 900, 1996-1997 Saab 9000, 1996-1997 Saab 9000, 1994-1995 Volvo 850, 1993-1993 Volvo 850
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Porsche
Quantity1
Item LocatedUnited States
Part interchange
234-4182, 25581, 25555, 25633, 30561510, 4301545, 9147224, 32000423, 
...View more
item #1004YXPK
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Air / Fuel Ratio Sensor - Upstream - Denso 234-5072
DensoPart # 234-5072
Air / Fuel Ratio Sensor - Upstream - Denso 234-5072
4.29 Reviews
$179.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2005-2005 Porsche 911, 2002-2005 Porsche 911, 2002-2005 Porsche 911, 2001-2001 Porsche 911
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Porsche
Quantity1
Installation PositionUpstream
Item LocatedUnited States
Part interchange
234-5072, 24312, 213-3086, 17044, ES10924, SG1097, 250-25079, 350-35077, 
...View more
item #1002H6ZH
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Oxygen Sensor - Upstream - Denso 234-3031
DensoPart # 234-3031
Oxygen Sensor - Upstream - Denso 234-3031
4.29 Reviews
$100.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 1994-1994 Porsche 911, 1994-1994 Porsche 911, 1994-1994 Porsche 911, 1994-1994 Porsche 911, 1994-1994 Porsche 911, 1993-1995 Porsche 928, 1989-1989 Porsche 944, 1988-1991 Porsche 928, 1988-1988 Porsche 944, 1987-1988 Porsche 944, 1986-1993 Porsche 911, 1986-1988 Porsche 944, 1984-1985 Porsche 911, 1984-1985 Porsche 911
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Porsche
Quantity1
Installation PositionUpstream
Item LocatedUnited States
Part interchange
234-3031, 25516, 213-1259, 213-1241, OS515, OS551, 13048, 13924, 
...View more
item #1003RZKZ
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Oxygen Sensor - Upstream - Denso 234-4271
DensoPart # 234-4271
Oxygen Sensor - Upstream - Denso 234-4271
4.29 Reviews
$99.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2001-2002 Porsche Boxster, 2000-2000 Porsche Boxster, 2000-2000 Porsche Boxster
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Porsche
Quantity1
Installation PositionUpstream
Item LocatedUnited States
Part interchange
234-4271, 25652, 213-3878, 15182, SG186, 350-34555, 250-24647, 98660612701
item #1004YWS8
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Air / Fuel Ratio Sensor - Upstream Left - Denso 234-5074
DensoPart # 234-5074
Air / Fuel Ratio Sensor - Upstream Left - Denso 234-5074
4.29 Reviews
$155.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2003-2006 Porsche Cayenne
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Porsche
Quantity1
Installation PositionUpstream Left
Item LocatedUnited States
Part interchange
234-5074, 24318, 213-3895, 17158, 250-25008, 350-35035, 94860612902
item #1002H5YP
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Air / Fuel Ratio Sensor - Denso 234-5028
DensoPart # 234-5028
Air / Fuel Ratio Sensor - Denso 234-5028
4.29 Reviews
$208.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2004-2009 Audi S4, 2004-2006 Audi TT Quattro, 2004-2006 Porsche Cayenne, 2003-2005 Audi Allroad Quattro, 2003-2003 Audi TT Quattro, 2002-2006 Audi A4 Quattro, 2002-2005 Audi A4, 2002-2004 Audi A6, 2002-2004 Audi A6 Quattro, 2002-2004 Audi A6 Quattro, 1999-2001 Volkswagen Beetle
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Porsche
Quantity1
Item LocatedUnited States
Part interchange
234-5028, 24321, 24316, 06A906262AE, 1K0998262F, OS2394, OS2409, OS2393, 
...View more
item #1002H96S
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Oxygen Sensor - Denso 234-8064
DensoPart # 234-8064
Oxygen Sensor - Denso 234-8064
4.29 Reviews
$181.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2022-2023 Audi A4 Quattro, 2022-2023 Audi Q5 Sportback, 2022-2023 Audi Q5 Sportback, 2022-2023 Audi Q5 Sportback, 2022-2023 Audi Q5 Sportback, 2022-2023 Audi Q5 Sportback, 2021-2023 Audi A5 Quattro, 2021-2023 Audi A5 Quattro, 2021-2023 Audi A5 Quattro, 2021-2023 Audi A5 Quattro, 2021-2023 Audi A5 Quattro, 2021-2023 Audi A5 Sportback, 2021-2023 Audi A5 Sportback, 2021-2023 Audi A5 Sportback, 2021-2023 Audi A5 Sportback, 2021-2023 Audi A5 Sportback, 2021-2023 Audi A5 Sportback, 2021-2023 Audi Q5, 2021-2023 Audi Q5, 2021-2023 Audi Q5
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Porsche
Quantity1
Item LocatedUnited States
Part interchange
234-8064, 8W0906265AQ, 06K906262CF
item #1005HN75
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Denso 234-4485 Oxygen Sensor
DensoPart # 234-4485
Denso 234-4485 Oxygen Sensor
4.29 Reviews
$132.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2017-2018 Porsche Cayenne, 2015-2018 Porsche Cayenne, 2015-2015 Volkswagen Jetta, 2015-2015 Volkswagen Jetta, 2015-2015 Volkswagen Jetta, 2015-2015 Volkswagen Jetta, 2015-2015 Volkswagen Jetta, 2015-2015 Volkswagen Jetta, 2015-2015 Volkswagen Jetta, 2013-2015 Audi RS5, 2013-2014 Volkswagen Jetta, 2012-2014 Volkswagen Jetta, 2012-2012 Audi A8 Quattro, 2011-2016 Porsche Cayenne, 2011-2014 Porsche Cayenne, 2011-2014 Volkswagen Jetta, 2011-2014 Volkswagen Jetta, 2011-2013 Volkswagen Jetta, 2011-2011 Audi A6 Quattro, 2011-2011 Audi A8 Quattro
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Porsche
Quantity1
Item LocatedUnited States
Part interchange
234-4485, 25657, 25656, 25675, 1K0998262S, 16136, 16839, 16002, 
...View more
item #1005HR23
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Spectra Premium OS5304 Oxygen Sensor
Spectra PremiumPart # OS5304
Spectra Premium OS5304 Oxygen Sensor
4.45 Reviews
$33.99
Low stock: Only 1 left
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, 2005-2005 Porsche 911, 2004-2005 Porsche 911, 2004-2005 Porsche 911, 2002-2003 Porsche 911, 2002-2003 Porsche 911, 2001-2001 Porsche 911
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Porsche
Quantity1
Item LocatedUnited States
Part interchange
OS5304, 752736, 752761, 752762, SG771, SG1098, SG771T, SG1098T, 
...View more
item #1000YP6R
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Page 11 of 18

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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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

How to Remove a Stuck O2 Sensor Without Damaging the Sensor Bung

Remove stuck O2 sensors safely without damaging the bung. Learn why they seize, proper tools, and step-by-step techniques using penetrating oil and controlled force. Avoid rounded hexes and costly exhaust repairs with these expert tips.

Sep 07, 2026

Are Upstream and Downstream O2 Sensors Interchangeable? How to Tell Them Apart

The short answer is no. This guide breaks down the exact mechanical and electrical differences between these two sensors. By reading on, you will gain master-tech diagnostic insights, learn a foolproof 4-step checklist to tell them apart instantly

Aug 28, 2026