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Isuzu Trooper Oxygen Sensors
33 itemsShop 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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A-Premium®Part # APOS0335
Upstream O2 Oxygen Sensor | 1-Pc Direct-Fit | A-Premium APOS0335
4.5669 Reviews
$32.99
Low stock: Only 1 left
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 1994 - 1995 Honda Passport, 1993 - 1995 Isuzu Rodeo, 1992 - 1995 Isuzu Trooper, 1992 - 1993 GEO Storm, 1992 - 1992 Isuzu Impulse, 1992 - 1992 Isuzu Stylus
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Vehicle: Isuzu Trooper
Quantity1
Installation PositionUpstream
Item LocatedUnited States
ConditionNew
item #1003117G
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A-Premium®Part # OS123
Upstream & Downstream O2 Oxygen Sensor | 2-Pc Direct-Fit | A-Premium OS123
4.5669 Reviews
$44.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2002 - 2002 Cadillac Escalade, 2002 - 2002 Chevrolet Avalanche 1500, 2002 - 2002 Chevrolet Silverado 1500, 2001 - 2003 Isuzu Rodeo Sport, 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 - 2001 Chevrolet Silverado 1500, 2000 - 2000 Chevrolet Silverado 2500, 2000 - 2000 GMC Sierra 2500, 1999 - 2002 GMC Sierra 1500, 1999 - 2001 Chevrolet Silverado 1500, 1999 - 2001 Isuzu VehiCROSS, 1999 - 2000 Cadillac Escalade
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Isuzu Trooper
Quantity2
Installation PositionUpstream & Downstream
Item LocatedUnited States
ConditionNew
item #1004A06S
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A-Premium®Part # APOS1986
Upstream & Downstream O2 Oxygen Sensor | 4-Pc Direct-Fit | Heated | A-Premium APOS1986
4.5669 Reviews
$104.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2002 - 2003 Isuzu Axiom, 2001 - 2001 Honda Passport, 2001 - 2001 Isuzu Rodeo, 2001 - 2001 Isuzu Rodeo Sport, 2000 - 2002 Isuzu Trooper
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Isuzu Trooper
Quantity4
Installation PositionUpstream & Downstream
Item LocatedUnited States
ConditionNew
item #1004A4QS
Show less
A-Premium®Part # APOS1906
Upstream & Downstream O2 Oxygen Sensor | 4-Pc Direct-Fit | Heated | A-Premium APOS1906
4.5669 Reviews
$89.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 1999 - 2001 Chevrolet S10, 1999 - 2001 Isuzu Vehicross, 1998 - 2001 GMC Sonoma, 1998 - 2000 Isuzu Amigo, 1998 - 1999 Acura SLX, 1998 - 1999 Isuzu Trooper, 1997 - 2000 Isuzu Hombre, 1996 - 2001 Chevrolet Blazer, 1996 - 2000 Honda Passport, 1996 - 2000 Isuzu Rodeo, 1996 - 1997 Acura SLX, 1996 - 1997 Isuzu Trooper, 1996 - 1996 Buick Commercial Chassis, 1996 - 1996 Buick Roadmaster, 1996 - 1996 Cadillac Commercial Chassis, 1996 - 1996 Cadillac Fleetwood, 1996 - 1996 Chevrolet Caprice, 1996 - 1996 Chevrolet Caprice, 1996 - 1996 Chevrolet Corvette, 1996 - 1996 Chevrolet Impala
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Isuzu Trooper
Quantity4
Installation PositionUpstream & Downstream
Item LocatedUnited States
ConditionNew
item #1004AA0U
Show less
A-Premium®Part # OS032
O2 Oxygen Sensor | 1-Pc Direct-Fit | Heated | A-Premium OS032
4.5669 Reviews
$26.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2007 - 2007 Chevrolet Aveo5, 2006 - 2007 Chevrolet Aveo, 2005 - 2006 Pontiac GTO, 2004 - 2005 Chevrolet Aveo, 2004 - 2004 Pontiac GTO, 2002 - 2003 Isuzu Axiom, 2001 - 2001 Honda Passport, 2001 - 2001 Isuzu Rodeo, 2001 - 2001 Isuzu Rodeo Sport, 2000 - 2002 Isuzu Trooper
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Isuzu Trooper
Installation PositionCheck the fitment chart
Item LocatedUnited States
ConditionNew
item #10031D3C
Note
Oxygen Senor - B1S1 Indicates Bank 1 Sensor 1, B1S2 Indicates Bank 1 Sensor 2, B2S2 Indicates Bank 2 Sensor 2.
For Chevrolet Aveo5 & 2006-2007 Aveo Model with LEV Specification, Not ULEV Specification.
For Chevrolet Aveo5 & 2006-2007 Aveo Model with LEV Specification, Not ULEV Specification.
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A-Premium®Part # OS168
O2 Oxygen Sensor | 1-Pc Direct-Fit | Heated | A-Premium OS168
4.5669 Reviews
$22.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2002 - 2002 Cadillac Escalade, 2002 - 2002 Chevrolet Avalanche 1500, 2001 - 2003 Isuzu Rodeo Sport, 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, 2000 - 2000 GMC Sierra 2500, 1999 - 2002 Daewoo Lanos, 1999 - 2002 Daewoo Leganza, 1999 - 2002 GMC Sierra 1500, 1999 - 2001 Chevrolet S10, 1999 - 2001 Chevrolet Silverado 1500
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Isuzu Trooper
Installation PositionCheck the fitment chart
Item LocatedUnited States
ConditionNew
item #1003094Q
Note
Oxygen Senor - B1S1 Indicates Bank 1 Sensor 1, B1S2 Indicates Bank 1 Sensor 2, B2S1 Indicates Bank 2 Sensor 1, B2S1 Indicates Bank 1 Sensor 2.
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AisinPart # OXSAZ-00288
Upstream or Downstream or Center O2 Oxygen Sensor | 1-Pc Direct-Fit | Aisin OXSAZ-00288
4.5669 Reviews
$43.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2002 - 2002 Cadillac Escalade, 2002 - 2002 Chevrolet Avalanche 1500, 2001 - 2003 Isuzu Rodeo Sport, 2000 - 2002 Chevrolet Silverado 1500, 2000 - 2002 Chevrolet Suburban 1500, 2000 - 2002 Chevrolet Tahoe, 2000 - 2002 GMC Sierra 1500, 2000 - 2002 GMC Yukon, 2000 - 2002 GMC Yukon XL 1500, 2000 - 2000 Chevrolet Silverado 2500, 2000 - 2000 GMC Sierra 2500, 1999 - 2002 Daewoo Lanos, 1999 - 2002 Daewoo Leganza, 1999 - 2002 GMC Sierra 1500, 1999 - 2001 Chevrolet S10, 1999 - 2001 Chevrolet Silverado 1500, 1999 - 2001 Isuzu VehiCROSS, 1999 - 2000 Cadillac Escalade, 1999 - 1999 Chevrolet Silverado 1500, 1999 - 1999 Chevrolet Silverado 2500
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Vehicle: Isuzu Trooper
Quantity1
Installation PositionUpstream or Downstream or Center
Item LocatedUnited States
ConditionNew
item #1018EP6G
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AisinPart # OXSGM-00290
Upstream & Downstream O2 Oxygen Sensor | 4-Pc Direct-Fit | Aisin OXSGM-00290
4.5669 Reviews
$129.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 1999 - 2001 Chevrolet S10, 1999 - 2001 Isuzu VehiCROSS, 1998 - 2001 GMC Sonoma, 1998 - 2000 Isuzu Amigo, 1998 - 1999 Acura SLX, 1998 - 1999 Isuzu Trooper, 1997 - 2000 Isuzu Hombre, 1996 - 2001 Chevrolet Blazer, 1996 - 2000 Honda Passport, 1996 - 2000 Isuzu Rodeo, 1996 - 1997 Acura SLX, 1996 - 1997 Isuzu Trooper, 1996 - 1996 Buick Commercial Chassis, 1996 - 1996 Buick Roadmaster, 1996 - 1996 Cadillac Commercial Chassis, 1996 - 1996 Cadillac Fleetwood, 1996 - 1996 Chevrolet Caprice, 1996 - 1996 Chevrolet Corvette, 1996 - 1996 Chevrolet Impala
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Isuzu Trooper
Quantity4
Installation PositionUpstream & Downstream
Item LocatedUnited States
ConditionNew
item #1018EGN9
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AisinPart # OXSAZ-00289
Upstream or Downstream O2 Oxygen Sensor | 2-Pc Direct-Fit | Aisin OXSAZ-00289
4.5669 Reviews
$97.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2002 - 2002 Cadillac Escalade, 2002 - 2002 Chevrolet Avalanche 1500, 2001 - 2003 Isuzu Rodeo Sport, 2000 - 2002 Chevrolet Silverado 1500, 2000 - 2002 Chevrolet Suburban 1500, 2000 - 2002 Chevrolet Tahoe, 2000 - 2002 GMC Sierra 1500, 2000 - 2002 GMC Sierra 1500, 2000 - 2002 GMC Yukon, 2000 - 2002 GMC Yukon XL 1500, 2000 - 2000 Chevrolet Silverado 2500, 2000 - 2000 GMC Sierra 2500, 1999 - 2002 GMC Sierra 1500, 1999 - 2001 Chevrolet Silverado 1500, 1999 - 2001 Isuzu VehiCROSS, 1999 - 2000 Cadillac Escalade, 1999 - 1999 Chevrolet Silverado 1500, 1999 - 1999 Chevrolet Silverado 1500, 1999 - 1999 Chevrolet Silverado 2500, 1999 - 1999 GMC Sierra 1500
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Isuzu Trooper
Quantity2
Installation PositionUpstream or Downstream
Item LocatedUnited States
ConditionNew
item #1018EGTK
Show less
AisinPart # OXSAZ-00566
Upstream or Downstream O2 Oxygen Sensor | 1-Pc Direct-Fit | Aisin OXSAZ-00566
4.5669 Reviews
$41.99
Low stock: Only 3 left
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2007 - 2007 Chevrolet Aveo5, 2006 - 2007 Chevrolet Aveo, 2005 - 2006 Pontiac GTO, 2004 - 2005 Chevrolet Aveo, 2004 - 2004 Pontiac GTO, 2002 - 2003 Isuzu Axiom, 2001 - 2001 Honda Passport, 2001 - 2001 Isuzu Rodeo, 2001 - 2001 Isuzu Rodeo Sport, 2000 - 2002 Isuzu Trooper
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Isuzu Trooper
Quantity1
Installation PositionUpstream or Downstream
Item LocatedUnited States
ConditionNew
item #1018EE5T
Show less
BoschPart # 11027
Oxygen Sensor - Bosch 11027
46 Reviews
$49.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2001-2002 Saturn SC1, 2001-2002 Saturn SC2, 2001-2002 Saturn SL, 2001-2002 Saturn SL1, 2001-2002 Saturn SL2, 2001-2001 Saturn SW2, 2000-2000 Saturn SC1, 2000-2000 Saturn SL, 2000-2000 Saturn SL1, 1999-2000 Chevrolet S10, 1999-2000 GMC Sonoma, 1999-1999 Oldsmobile Alero, 1999-1999 Pontiac Grand Am, 1998-1998 Chevrolet S10, 1998-1998 GMC Sonoma, 1997-2000 Isuzu Hombre, 1997-1999 Chevrolet Malibu, 1996-2000 Saturn SC2, 1996-2000 Saturn SL2, 1996-2000 Saturn SW2
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Isuzu Trooper
Quantity1
Item LocatedUnited States
Part interchange
11027, J3240083, 3238765, 91160612300, 94460613300, 0025421218
item #1002AYHA
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DensoPart # 234-4012
Denso 234-4012 Oxygen Sensor
4.29 Reviews
$38.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2003-2003 Isuzu Rodeo, 2002-2002 Cadillac Escalade, 2002-2002 Chevrolet Avalanche 1500, 2002-2002 GMC Sierra 1500, 2002-2002 Isuzu Rodeo, 2001-2003 Isuzu Rodeo Sport, 2001-2002 GMC Sierra 1500, 2001-2002 GMC Yukon, 2001-2002 GMC Yukon, 2001-2002 GMC Yukon XL 1500, 2001-2001 Chevrolet Blazer, 2001-2001 GMC Sonoma, 2001-2001 Isuzu Rodeo, 2001-2001 Isuzu VehiCROSS, 2000-2002 Chevrolet Suburban 1500, 2000-2002 Chevrolet Tahoe, 2000-2002 GMC Sierra 1500, 2000-2001 Chevrolet S10, 2000-2001 GMC Sierra 1500, 2000-2000 Chevrolet Blazer
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Isuzu Trooper
Quantity1
Item LocatedUnited States
Part interchange
234-4012, 19178918, 19178930, 24626, 21006, 8253252660, 19178937, 96335927,
...View moreitem #1003S56U
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DensoPart # 234-4062
Oxygen Sensor - Upstream - Denso 234-4062
4.29 Reviews
$61.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 1994-1995 Honda Passport, 1993-1995 Isuzu Rodeo, 1993-1993 Asuna Sunfire, 1992-1995 Isuzu Trooper, 1992-1993 Geo Storm, 1992-1992 Isuzu Impulse, 1992-1992 Isuzu Stylus
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Isuzu Trooper
Quantity1
Installation PositionUpstream
Item LocatedUnited States
Part interchange
234-4062, 8970242560, 8970321021, 24601, 213-1321, 213-2883, 213-406, 213-4284,
...View moreitem #1003S619
Show less
Spectra PremiumPart # OS5044
Spectra Premium OS5044 Oxygen Sensor
4.45 Reviews
$29.99
Low stock: Only 1 left
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2003-2003 Chevrolet Corvette, 2002-2003 Isuzu Rodeo Sport, 2001-2003 Isuzu Rodeo, 2001-2002 Chevrolet G30, 2001-2001 Chevrolet Blazer, 2001-2001 Chevrolet C1500, 2001-2001 GMC Jimmy, 2001-2001 Isuzu Rodeo Sport, 2001-2001 Oldsmobile Bravada, 2000-2001 Chevrolet S10, 2000-2001 GMC Sonoma, 2000-2000 Chevrolet C1500, 2000-2000 GMC Jimmy, 2000-2000 GMC Yukon, 2000-2000 Oldsmobile Bravada, 1999-2002 Chevrolet Corvette, 1999-2002 Chevrolet Express 3500, 1999-2002 Daewoo Lanos, 1999-2002 Daewoo Leganza, 1999-2002 GMC Savana 1500
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Isuzu Trooper
Quantity1
Item LocatedUnited States
Part interchange
OS5044, 751701, 753251, SG278T, SG239T, SG236T, SG278, SG239,
...View moreitem #1000YDE5
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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: Isuzu Trooper
Quantity1
Item LocatedUnited States
Part interchange
234-4000, 13470, 15503, 15702, 15058, 13111, 13027, 13326,
...View moreitem #1003S484
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BoschPart # 13030
Oxygen Sensor - Upstream - Bosch 13030
46 Reviews
$66.99
Low stock: Only 5 left
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 1994-1995 Honda Passport, 1993-1995 Isuzu Rodeo, 1992-1995 Isuzu Trooper, 1992-1993 Geo Storm, 1992-1992 Isuzu Impulse, 1992-1992 Isuzu Stylus
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Isuzu Trooper
Quantity1
Installation PositionUpstream
Item LocatedUnited States
Part interchange
13030, 97024256, 8970242560
item #1002C48Z
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Walker ProductsPart # 250-24012
Walker Products 250-24012 Oxygen Sensor
56 Reviews
$65.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2006-2008 Chevrolet Corsa, 2003-2003 Isuzu Rodeo, 2002-2003 Isuzu Rodeo Sport, 2002-2002 Cadillac Escalade, 2002-2002 Chevrolet Avalanche 1500, 2002-2002 Chevrolet Express 2500, 2002-2002 Chevrolet Silverado 1500, 2002-2002 Chevrolet Silverado 1500, 2002-2002 Chevrolet Suburban 1500, 2002-2002 Isuzu Rodeo, 2001-2002 Chevrolet Express 1500, 2001-2002 Chevrolet Silverado 3500, 2001-2002 Chevrolet Tahoe, 2001-2002 GMC Sierra 1500, 2001-2002 GMC Sierra 1500, 2001-2002 GMC Yukon XL 1500, 2001-2001 Chevrolet Silverado 1500, 2001-2001 Chevrolet Suburban 1500, 2001-2001 GMC Jimmy, 2001-2001 Isuzu Rodeo
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Isuzu Trooper
Quantity1
Item LocatedUnited States
Part interchange
250-24012
item #1001PCCQ
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DensoPart # 234-4209
Denso 234-4209 Oxygen Sensor
4.29 Reviews
$54.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2015-2016 Toyota Sequoia, 2015-2016 Toyota Sequoia, 2015-2016 Toyota Sequoia, 2013-2015 Toyota Tundra, 2013-2014 Toyota Avalon, 2013-2014 Toyota Sequoia, 2013-2013 Lexus LX570, 2013-2013 Toyota Highlander, 2013-2013 Toyota Land Cruiser, 2013-2013 Toyota Tundra, 2012-2014 Toyota Camry, 2012-2012 Mitsubishi Eclipse, 2012-2012 Toyota Tacoma, 2011-2015 Mitsubishi Outlander, 2011-2014 Toyota Venza, 2011-2013 Toyota Highlander, 2011-2013 Toyota Highlander, 2011-2013 Toyota Highlander, 2011-2013 Toyota Highlander, 2011-2013 Toyota Highlander
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Isuzu Trooper
Quantity1
Item LocatedUnited States
Part interchange
234-4209, 13073, 13139, 15349, 13302, 15621, 15580, 13619,
...View moreitem #1004Z0RS
Show less
Walker ProductsPart # 250-24490
Walker Products 250-24490 Oxygen Sensor
56 Reviews
$50.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2007-2007 Chevrolet Aveo5, 2006-2007 Chevrolet Aveo, 2005-2006 Pontiac GTO, 2005-2005 Chevrolet Aveo, 2004-2004 Chevrolet Aveo, 2004-2004 Pontiac GTO, 2003-2003 Isuzu Axiom, 2002-2002 Isuzu Axiom, 2001-2001 Honda Passport, 2001-2001 Isuzu Rodeo, 2001-2001 Isuzu Rodeo Sport, 2000-2002 Isuzu Trooper
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Isuzu Trooper
Quantity1
Item LocatedUnited States
Part interchange
250-24490
item #1001P92H
Show less
BoschPart # 15703
Bosch 15703 Oxygen Sensor
46 Reviews
$47.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2003-2003 Isuzu Axiom, 2002-2003 Isuzu Rodeo, 2002-2002 Isuzu Axiom, 2001-2003 Isuzu Rodeo Sport, 2001-2001 Chevrolet S10, 2001-2001 GMC Sonoma, 2001-2001 Isuzu Rodeo Sport, 2000-2002 Chevrolet Express 2500, 2000-2002 Daewoo Lanos, 2000-2002 GMC Savana 3500, 2000-2000 Chevrolet S10, 2000-2000 GMC Sonoma, 2000-2000 Isuzu Hombre, 1999-2002 Daewoo Leganza, 1999-2001 Isuzu VehiCROSS, 1999-2000 Cadillac Escalade, 1999-2000 Isuzu Amigo, 1999-2000 Isuzu Amigo, 1999-1999 Chevrolet C1500 Suburban, 1999-1999 Chevrolet Express 2500
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Isuzu Trooper
Quantity1
Item LocatedUnited States
Part interchange
15703, 29004H0030, 8191789180, 19178918, 19178930, 19178937, 96335927, 8972240110,
...View moreitem #1002DUC9
Show less
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:
- Catalytic Converter: Persistent issues after replacing a downstream oxygen sensor may indicate converter failure
- MAF Sensor: Works with your oxygen sensor to calculate air intake
- Ignition Coils & Spark Plugs: Misfires can damage O2 sensors quickly
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.
Frequently Asked Questions
Can I clean my oxygen sensor instead of replacing it?
Should I replace O2 sensors in pairs?
Do I need a special tool?
How long do oxygen sensors last?
What’s the difference between upstream and downstream sensors?
What happens if I ignore a bad oxygen sensor?
How do I know if it’s Bank 1 or Bank 2?
Will replacing an oxygen sensor improve MPG?
How do oxygen sensor voltages relate to fuel mixture?
How much does it cost to replace an oxygen sensor?
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Why Is My Car Running Worse After a New O2 Sensor?
Car running worse after O2 sensor replacement? Check part compatibility, wiring, and exhaust leaks before assuming a bad sensor. Learn to diagnose fuel trims, verify installation, and avoid costly mistakes with this step-by-step guide.
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Can You Clean an O2 Sensor to Make It Work Again?
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Sep 22, 2026