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Buick Century Oxygen Sensors

70 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 | Aisin OXSAZ-00228Upstream or Downstream O2 Oxygen Sensor | 1-Pc Direct-Fit | Aisin OXSAZ-00228
AisinPart # OXSAZ-00228
Upstream or Downstream O2 Oxygen Sensor | 1-Pc Direct-Fit | Aisin OXSAZ-00228
4.5650 Reviews
$43.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2004 - 2004 Buick Rainier, 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 GMC Sonoma, 2003 - 2004 Isuzu Ascender, 2002 - 2005 Buick Rendezvous, 2002 - 2005 Chevrolet Blazer, 2002 - 2004 Chevrolet S10, 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, 2001 - 2005 Buick Century, 2001 - 2005 Chevrolet Impala
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Vehicle: Buick Century
Quantity1
Installation PositionUpstream or Downstream
Item LocatedUnited States
ConditionNew
item #1018EGYG
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Downstream O2 Oxygen Sensor | 1-Pc Direct-Fit | Aisin OXSAZ-00183
AisinPart # OXSAZ-00183
Downstream O2 Oxygen Sensor | 1-Pc Direct-Fit | Aisin OXSAZ-00183
4.5650 Reviews
$43.99
Low stock: Only 4 left
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2002 - 2004 Buick Rendezvous, 2001 - 2004 Pontiac Aztek, 2000 - 2004 Chevrolet Impala, 2000 - 2004 Chevrolet Monte Carlo, 2000 - 2003 Chevrolet Impala, 2000 - 2002 Chevrolet Camaro, 2000 - 2002 Pontiac Firebird, 1999 - 2004 Pontiac Montana, 1999 - 1999 Oldsmobile Intrigue, 1998 - 2003 Chevrolet Monte Carlo, 1998 - 2002 Chevrolet Camaro, 1998 - 2002 Pontiac Firebird, 1998 - 1999 Chevrolet Camaro, 1998 - 1999 Chevrolet Lumina, 1998 - 1999 Oldsmobile Aurora, 1998 - 1999 Oldsmobile Intrigue, 1998 - 1999 Pontiac Firebird, 1997 - 2004 Chevrolet Venture, 1997 - 2003 Chevrolet S10, 1997 - 2003 Pontiac Grand Prix
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Buick Century
Quantity1
Installation PositionDownstream
Item LocatedUnited States
ConditionNew
item #1018EH1H
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Oxygen Sensor - Bosch 11027
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: Buick Century
Quantity1
Item LocatedUnited States
Part interchange
11027, J3240083, 3238765, 91160612300, 94460613300, 0025421218
item #1002AYHA
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Spectra Premium OS5047 Oxygen Sensor
Spectra PremiumPart # OS5047
Spectra Premium OS5047 Oxygen Sensor
4.45 Reviews
$30.99
Low stock: Only 4 left
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2005-2005 GMC Jimmy, 2005-2005 Pontiac Montana, 2004-2005 Buick Rendezvous, 2004-2005 Chevrolet Blazer, 2004-2004 Chevrolet S10, 2004-2004 GMC Jimmy, 2004-2004 GMC Sonoma, 2004-2004 Isuzu Axiom, 2004-2004 Isuzu Rodeo, 2003-2003 Cadillac DeVille, 2003-2003 Cadillac Seville, 2003-2003 Chevrolet Blazer, 2003-2003 Chevrolet S10, 2003-2003 GMC Jimmy, 2003-2003 GMC Sonoma, 2003-2003 Isuzu Rodeo, 2003-2003 Oldsmobile Aurora, 2002-2003 Buick Rendezvous, 2002-2003 Isuzu Rodeo Sport, 2002-2002 Cadillac DeVille
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Buick Century
Quantity1
Item LocatedUnited States
Part interchange
OS5047, 751900, 753269, 753030, 754057, SG1614T, SG1415, SG1366, 
...View more
item #1000YEDE
Show less
Oxygen Sensor - Bosch 13444
BoschPart # 13444
Oxygen Sensor - Bosch 13444
46 Reviews
$49.99
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, 2002-2003 Buick Rendezvous, 2002-2002 Chevrolet Camaro, 2002-2002 Chevrolet Camaro, 2002-2002 Chevrolet Camaro, 2002-2002 Pontiac Firebird, 2002-2002 Pontiac Firebird, 2002-2002 Pontiac Firebird, 2001-2004 Pontiac Aztek, 2001-2001 Chevrolet Camaro, 2000-2003 Chevrolet Impala, 2000-2001 Pontiac Firebird, 2000-2000 Chevrolet Camaro, 2000-2000 Chevrolet Camaro, 1999-2004 Pontiac Montana, 1999-1999 Chevrolet Camaro, 1999-1999 Chevrolet Camaro, 1998-2000 Chevrolet Camaro
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Buick Century
Quantity1
Item LocatedUnited States
Part interchange
13444, 19178747, 19178922, 19178924, 19355308, 19178928, 8191789240
item #1002CQUG
Show less
Denso 234-4012 Oxygen Sensor
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: Buick Century
Quantity1
Item LocatedUnited States
Part interchange
234-4012, 19178918, 19178930, 24626, 21006, 8253252660, 19178937, 96335927, 
...View more
item #1003S56U
Show less
Denso 234-4018 Oxygen Sensor
DensoPart # 234-4018
Denso 234-4018 Oxygen Sensor
4.29 Reviews
$42.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2002-2002 Cadillac Escalade, 2002-2002 Cadillac Escalade, 2002-2002 Cadillac Escalade EXT, 2002-2002 Chevrolet Avalanche 1500, 2002-2002 Chevrolet Silverado 1500, 2001-2003 Chevrolet Impala, 2001-2003 Chevrolet Monte Carlo, 2001-2003 Pontiac Grand Prix, 2001-2002 Chevrolet Camaro, 2001-2002 GMC Sierra 1500, 2001-2002 GMC Yukon, 2001-2002 GMC Yukon XL 1500, 2001-2002 Pontiac Firebird, 2001-2001 Chevrolet Silverado 1500 HD, 2001-2001 Chevrolet Silverado 2500 HD, 2001-2001 Chevrolet Silverado 3500, 2001-2001 Chevrolet Suburban 2500, 2001-2001 GMC Sierra 1500, 2001-2001 GMC Sierra 1500 HD, 2001-2001 GMC Sierra 2500
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Buick Century
Quantity1
Item LocatedUnited States
Part interchange
234-4018, 21539, AFS106, AFS109, AFS135, AFS95, AFS125, OS839, 
...View more
item #1003S2DE
Show less
Spectra Premium OS5046 Oxygen Sensor
Spectra PremiumPart # OS5046
Spectra Premium OS5046 Oxygen Sensor
4.45 Reviews
$33.99
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, 2002-2003 Buick Rendezvous, 2001-2005 Chevrolet LUV, 2001-2004 Pontiac Aztek, 2000-2003 Chevrolet Impala, 2000-2002 Chevrolet Camaro, 1999-2004 Pontiac Montana, 1999-1999 Chevrolet Camaro, 1998-2002 Chevrolet Camaro, 1998-2002 Chevrolet Camaro, 1998-2002 Pontiac Firebird, 1998-2002 Pontiac Firebird, 1998-2002 Pontiac Firebird, 1998-1999 Oldsmobile Aurora, 1998-1999 Oldsmobile Intrigue, 1998-1998 Chevrolet Camaro, 1997-2004 Chevrolet Venture, 1997-2003 Chevrolet S10
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Buick Century
Quantity1
Item LocatedUnited States
Part interchange
OS5046, 751909, SG277T, SG277, 2131681, 213938, AFS97, AFS141, 
...View more
item #1000YANU
Show less
Spectra Premium OS5210 Oxygen Sensor
Spectra PremiumPart # OS5210
Spectra Premium OS5210 Oxygen Sensor
4.45 Reviews
$32.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2007-2007 Buick Rendezvous, 2007-2007 Pontiac G6, 2007-2007 Saturn Aura, 2006-2007 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 Rainier
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Buick Century
Quantity1
Item LocatedUnited States
Part interchange
OS5210, 213818, 213816, 213800, 2131552, 21573, 8192098080, 8125731680, 
...View more
item #1000YKKC
Show less
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: Buick Century
Quantity1
Item LocatedUnited States
Part interchange
234-4000, 13470, 15503, 15702, 15058, 13111, 13027, 13326, 
...View more
item #1003S484
Show less
Bosch 13474 Oxygen Sensor
BoschPart # 13474
Bosch 13474 Oxygen Sensor
46 Reviews
$53.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2002-2002 Cadillac Escalade, 2002-2002 Cadillac Escalade, 2002-2002 Cadillac Escalade EXT, 2002-2002 Chevrolet Avalanche 1500, 2002-2002 Chevrolet Silverado 1500, 2002-2002 Chevrolet Silverado 1500, 2002-2002 Chevrolet Tahoe, 2002-2002 GMC Sierra 1500, 2002-2002 GMC Yukon, 2002-2002 GMC Yukon, 2002-2002 GMC Yukon XL 1500, 2002-2002 GMC Yukon XL 1500, 2002-2002 GMC Yukon XL 1500, 2001-2003 Chevrolet Impala, 2001-2003 Chevrolet Monte Carlo, 2001-2003 Pontiac Grand Prix, 2001-2002 Chevrolet Camaro, 2001-2002 Chevrolet Suburban 1500, 2001-2002 GMC Sierra 1500, 2001-2002 GMC Sierra 1500
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Buick Century
Quantity1
Item LocatedUnited States
Part interchange
13474, 19178116, 19178935, 19178958, 25163080, 19178945
item #1002CU5K
Show less
Walker Products 250-24836 Oxygen Sensor
Walker ProductsPart # 250-24836
Walker Products 250-24836 Oxygen Sensor
55 Reviews
$51.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2008-2009 Chevrolet Chevy, 2007-2007 Buick Rendezvous, 2007-2007 Chevrolet Corvette, 2007-2007 Chevrolet Monte Carlo, 2007-2007 Chevrolet Uplander, 2007-2007 Pontiac G6, 2007-2007 Pontiac Torrent, 2007-2007 Saturn Aura, 2007-2007 Saturn Relay, 2006-2008 Buick Lucerne, 2006-2007 Chevrolet Impala, 2006-2007 Chevrolet Impala, 2006-2007 Chevrolet Impala, 2006-2007 Chevrolet Monte Carlo, 2006-2007 Chevrolet Monte Carlo, 2006-2006 Buick Rendezvous, 2006-2006 Chevrolet Corvette, 2006-2006 Chevrolet Monte Carlo, 2006-2006 Pontiac G6, 2006-2006 Pontiac G6
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Buick Century
Quantity1
Item LocatedUnited States
Part interchange
250-24836
item #1001P8K3
Show less
Walker Products 250-24012 Oxygen Sensor
Walker ProductsPart # 250-24012
Walker Products 250-24012 Oxygen Sensor
55 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: Buick Century
Quantity1
Item LocatedUnited States
Part interchange
250-24012
item #1001PCCQ
Show less
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: Buick Century
Quantity1
Item LocatedUnited States
Part interchange
234-4650, 8972873520, 21047, 21516, 8125671270, 213-819, 213-817, 213-802, 
...View more
item #1005HQQS
Show less
Oxygen Sensor - Upstream - Denso 234-2001
DensoPart # 234-2001
Oxygen Sensor - Upstream - Denso 234-2001
4.29 Reviews
$48.99
Low stock: Only 1 left
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 1999-2002 Daewoo Lanos, 1999-2002 Daewoo Leganza, 1999-2002 Daewoo Nubira, 1994-1995 Cadillac DeVille, 1993-1993 Cadillac 60 Special, 1993-1993 Cadillac Eldorado, 1993-1993 Cadillac Seville, 1988-1993 Cadillac DeVille, 1988-1992 Cadillac Fleetwood, 1988-1992 Cadillac Seville, 1987-1992 Cadillac Allante, 1987-1992 Cadillac Eldorado, 1987-1987 Cadillac Fleetwood, 1986-1986 Cadillac Fleetwood, 1983-1984 Cadillac DeVille, 1983-1984 Cadillac Eldorado, 1983-1984 Cadillac Fleetwood, 1983-1984 Cadillac Fleetwood, 1983-1984 Cadillac Seville, 1982-1982 Buick Skyhawk
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Buick Century
Quantity1
Installation PositionUpstream
Item LocatedUnited States
Part interchange
234-2001, 21553, 96377500, 19211435, AFS23, 25165119, 213-2859, 213-322, 
...View more
item #1002HNYP
Show less
Oxygen Sensor - Bosch 13029
BoschPart # 13029
Oxygen Sensor - Bosch 13029
46 Reviews
$53.99
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, 2002-2003 Buick Rendezvous, 2002-2002 Chevrolet Camaro, 2002-2002 Pontiac Firebird, 2001-2004 Pontiac Aztek, 2001-2001 Chevrolet Camaro, 2001-2001 Chevrolet Camaro, 2001-2001 Chevrolet Camaro, 2001-2001 Chevrolet Silverado 1500 HD, 2001-2001 Chevrolet Silverado 2500 HD, 2001-2001 Chevrolet Silverado 3500, 2001-2001 Chevrolet Suburban 2500, 2001-2001 GMC Sierra 1500 HD, 2001-2001 GMC Sierra 2500, 2001-2001 GMC Sierra 2500 HD, 2001-2001 GMC Sierra 3500, 2001-2001 GMC Yukon, 2001-2001 GMC Yukon XL 1500
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Buick Century
Quantity1
Item LocatedUnited States
Part interchange
13029, 19178923
item #1002C7YK
Show less
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: Buick Century
Quantity1
Item LocatedUnited States
Part interchange
234-4647, 21048, 8125671630, OS2132, OS2008, OS2012, OS1473, OS2011, 
...View more
item #1005HR4K
Show less
Bosch 15895 Oxygen Sensor
BoschPart # 15895
Bosch 15895 Oxygen Sensor
46 Reviews
$51.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2007-2007 Buick Rendezvous, 2007-2007 Cadillac CTS, 2007-2007 Chevrolet Express 1500, 2007-2007 Chevrolet Express 2500, 2007-2007 Chevrolet Express 3500, 2007-2007 Chevrolet Silverado 1500, 2007-2007 Chevrolet Silverado 1500, 2007-2007 Chevrolet Silverado 1500 Classic, 2007-2007 Chevrolet Silverado 1500 HD Classic, 2007-2007 Chevrolet Silverado 2500 HD, 2007-2007 Chevrolet Silverado 2500 HD Classic, 2007-2007 Chevrolet Silverado 3500 Classic, 2007-2007 Chevrolet Silverado 3500 HD, 2007-2007 Chevrolet Silverado 3500 HD, 2007-2007 Chevrolet Silverado 3500 HD, 2007-2007 Chevrolet Silverado 3500 HD, 2007-2007 GMC Savana 1500, 2007-2007 GMC Savana 2500, 2007-2007 GMC Sierra 1500, 2007-2007 GMC Sierra 1500
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Buick Century
Quantity1
Item LocatedUnited States
Part interchange
15895, 12561777, 12567163, 19209807, 19209808, 12559849, 12567497, 12559848, 
...View more
item #1002E8ET
Show less
Denso 234-4209 Oxygen Sensor
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: Buick Century
Quantity1
Item LocatedUnited States
Part interchange
234-4209, 13073, 13139, 15349, 13302, 15621, 15580, 13619, 
...View more
item #1004Z0RS
Show less
Walker Products 250-24340 Oxygen Sensor
Walker ProductsPart # 250-24340
Walker Products 250-24340 Oxygen Sensor
55 Reviews
$52.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2010-2012 Chevrolet Chevy, 2004-2004 Buick Rendezvous, 2004-2004 Chevrolet Impala, 2004-2004 Chevrolet Monte Carlo, 2002-2003 Buick Rendezvous, 2001-2004 Pontiac Aztek, 2001-2002 Pontiac Firebird, 2000-2003 Chevrolet Impala, 2000-2002 Chevrolet Camaro, 2000-2002 Pontiac Firebird, 2000-2002 Pontiac Firebird, 1999-2004 Pontiac Montana, 1999-2002 Chevrolet Camaro, 1999-2002 Chevrolet Camaro, 1998-2000 Pontiac Firebird, 1998-1999 Chevrolet Camaro, 1998-1999 Oldsmobile Aurora, 1998-1999 Oldsmobile Intrigue, 1998-1999 Pontiac Firebird, 1998-1999 Pontiac Firebird
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Buick Century
Quantity1
Item LocatedUnited States
Part interchange
250-24340
item #1001P8WS
Show less
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Page 2 of 4

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?

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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

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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