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Please, add your first item to the wishlist

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Oxygen Sensor 21049 – NTK

PART#: 21049
NTK

$35.79

In stock

Interchanges
BrandPart #
Standard Motor ProductsSG1629
CARQUEST75-2540 / 752540
Bosch16861
ACDelco213-3538 / 2133538
Bosch13000
DelphiES20117
Bosch15140
Standard Motor ProductsSG707
ACDelco213-3850 / 2133850
DENSO Auto Parts234-4112 / 2344112
Isuzu8125775880
Bosch15285
BWDOS1461
ACDelco213-2831 / 2132831
DelphiES10734
Bosch15435
CARQUEST75-3343 / 753343
ACDelco213-1532 / 2131532
General Motors12577588
ACDelco213-962 / 213962
DENSO Auto Parts234-4345 / 2344345
ACDelco213-1551 / 2131551
General Motors12589549
Standard Motor ProductsSG708
Bosch13648
General Motors19209815
Bosch15898
Spectra PremiumOS5058
Fitments
YearMakeModelSubmodelEngineFuel TypePositionNote
2007CadillacEscaladeBase6.2V8GASDownstream Left
2007CadillacEscaladeBase6.2V8GASDownstream RightB2S2; OE Equivalent Design
2007CadillacEscalade ESVBase6.2V8GASDownstream RightB2S2; OE Equivalent Design
2007CadillacEscalade ESVBase6.2V8GASDownstream Left
2007CadillacEscalade EXTBase6.2V8GASDownstream RightB2S2; OE Equivalent Design
2007CadillacEscalade EXTBase6.2V8GASDownstream Left
2007ChevroletTahoeLT5.3V8FLEXDownstream RightB2S2; OE Equivalent Design
2007ChevroletTahoeLTZ5.3V8GASDownstream RightB2S2; OE Equivalent Design
2007ChevroletTahoePPV5.3V8FLEXDownstream Left
2007ChevroletTahoeLS4.8V8GASDownstream Left
2007ChevroletTahoeLS5.3V8GASDownstream RightB2S2; OE Equivalent Design
2007ChevroletTahoeLS5.3V8FLEXDownstream Left
2007ChevroletTahoeLS5.3V8GASDownstream Left
2007ChevroletTahoePPV5.3V8FLEXDownstream RightB2S2; OE Equivalent Design
2007ChevroletTahoeLT5.3V8GASDownstream RightB2S2; OE Equivalent Design
2007ChevroletTahoeLTZ5.3V8FLEXDownstream RightB2S2; OE Equivalent Design
2007ChevroletTahoeLS4.8V8GASDownstream RightB2S2; OE Equivalent Design
2007ChevroletTahoeLT5.3V8GASDownstream Left
2007ChevroletTahoeLT5.3V8FLEXDownstream Left
2007ChevroletTahoeLTZ5.3V8GASDownstream Left
2007ChevroletTahoeLTZ5.3V8FLEXDownstream Left
2007ChevroletTahoeLS5.3V8FLEXDownstream RightB2S2; OE Equivalent Design
2007ChevroletAvalancheLTZ5.3V8FLEXDownstream Left
2007ChevroletAvalancheLT5.3V8GASDownstream Left
2007ChevroletAvalancheLTZ5.3V8FLEXDownstream RightB2S2; OE Equivalent Design
2007ChevroletAvalancheLS5.3V8GASDownstream RightB2S2; OE Equivalent Design
2007ChevroletAvalancheLT5.3V8FLEXDownstream RightB2S2; OE Equivalent Design
2007ChevroletAvalancheLTZ6.0V8GASDownstream RightB2S2; OE Equivalent Design
2007ChevroletAvalancheLS5.3V8FLEXDownstream Left
2007ChevroletAvalancheLTZ5.3V8GASDownstream Left
2007ChevroletAvalancheLT6.0V8GASDownstream RightB2S2; OE Equivalent Design
2007ChevroletAvalancheLTZ5.3V8GASDownstream RightB2S2; OE Equivalent Design
2007ChevroletAvalancheLS5.3V8GASDownstream Left
2007ChevroletAvalancheLT6.0V8GASDownstream Left
2007ChevroletAvalancheLT5.3V8FLEXDownstream Left
2007ChevroletAvalancheLTZ6.0V8GASDownstream Left
2007ChevroletAvalancheLS5.3V8FLEXDownstream RightB2S2; OE Equivalent Design
2007ChevroletAvalancheLT5.3V8GASDownstream RightB2S2; OE Equivalent Design
2007ChevroletSuburban 1500LT5.3V8GASDownstream RightB2S2; OE Equivalent Design
2007ChevroletSuburban 1500LT6.0V8GASDownstream RightB2S2; OE Equivalent Design
2007ChevroletSuburban 1500LT5.3V8FLEXDownstream Left
2007ChevroletSuburban 1500LTZ5.3V8FLEXDownstream Left
2007ChevroletSuburban 1500LT5.3V8FLEXDownstream RightB2S2; OE Equivalent Design
2007ChevroletSuburban 1500LTZ5.3V8GASDownstream Left
2007ChevroletSuburban 1500LS5.3V8FLEXDownstream Left
2007ChevroletSuburban 1500LTZ5.3V8GASDownstream RightB2S2; OE Equivalent Design
2007ChevroletSuburban 1500LT5.3V8GASDownstream Left
2007ChevroletSuburban 1500LTZ5.3V8FLEXDownstream RightB2S2; OE Equivalent Design
2007ChevroletSuburban 1500LS5.3V8GASDownstream RightB2S2; OE Equivalent Design
2007ChevroletSuburban 1500LTZ6.0V8GASDownstream Left
2007ChevroletSuburban 1500LTZ6.0V8GASDownstream RightB2S2; OE Equivalent Design
2007ChevroletSuburban 1500LS5.3V8FLEXDownstream RightB2S2; OE Equivalent Design
2007ChevroletSuburban 1500LS5.3V8GASDownstream Left
2007ChevroletSuburban 1500LT6.0V8GASDownstream Left
2007ChevroletSuburban 2500LS6.0V8GASDownstream Left
2007ChevroletSuburban 2500LTZ6.0V8GASDownstream Left
2007ChevroletSuburban 2500LT6.0V8GASDownstream RightB2S2; OE Equivalent Design
2007ChevroletSuburban 2500LT6.0V8GASDownstream Left
2007ChevroletSuburban 2500LS6.0V8GASDownstream RightB2S2; OE Equivalent Design
2007ChevroletSuburban 2500LTZ6.0V8GASDownstream RightB2S2; OE Equivalent Design
2007ChevroletSilverado 1500WT4.3V6GASDownstream RightB2S2; OE Equivalent Design
2007ChevroletSilverado 1500WT4.3V6GASDownstream Left
2007ChevroletSilverado 1500 ClassicLS4.8V8GASDownstream RightClassic Models; B2S2; GMT800 Platform; OE Equivalent Design
2007ChevroletSilverado 1500 ClassicWT4.3V6GASDownstream Left
2007ChevroletSilverado 1500 ClassicWT4.8V8GASDownstream Left
2007ChevroletSilverado 1500 ClassicWT4.8V8GASDownstream RightClassic Models; B2S2; GMT800 Platform; OE Equivalent Design
2007ChevroletSilverado 1500 ClassicLS4.3V6GASDownstream Left
2007ChevroletSilverado 1500 ClassicLT4.8V8GASDownstream RightClassic Models; B2S2; GMT800 Platform; OE Equivalent Design
2007ChevroletSilverado 1500 ClassicWT4.3V6GASDownstream RightB2S2; OE Equivalent Design
2007ChevroletSilverado 1500 ClassicLT4.8V8GASDownstream Left
2007ChevroletSilverado 1500 ClassicLS4.8V8GASDownstream Left
2007ChevroletSilverado 1500 ClassicLS4.3V6GASDownstream RightB2S2; OE Equivalent Design
2007GMCYukonSLE5.3V8GASDownstream Left
2007GMCYukonSLT5.3V8GASDownstream RightB2S2; OE Equivalent Design
2007GMCYukonSLE4.8V8GASDownstream RightB2S2; OE Equivalent Design
2007GMCYukonSLT5.3V8FLEXDownstream Left
2007GMCYukonSLT5.3V8GASDownstream Left
2007GMCYukonSLE5.3V8FLEXDownstream RightB2S2; OE Equivalent Design
2007GMCYukonDenali6.2V8GASDownstream Left
2007GMCYukonDenali6.2V8GASDownstream RightB2S2; OE Equivalent Design
2007GMCYukonSLE5.3V8FLEXDownstream Left
2007GMCYukonSLE4.8V8GASDownstream Left
2007GMCYukonSLE5.3V8GASDownstream RightB2S2; OE Equivalent Design
2007GMCYukonSLT5.3V8FLEXDownstream RightB2S2; OE Equivalent Design
2007GMCYukon XL 1500SLT6.0V8GASDownstream RightB2S2; OE Equivalent Design
2007GMCYukon XL 1500SLT6.0V8GASDownstream Left
2007GMCYukon XL 1500SLT5.3V8GASDownstream Left
2007GMCYukon XL 1500SLE5.3V8GASDownstream Left
2007GMCYukon XL 1500SLE5.3V8GASDownstream RightB2S2; OE Equivalent Design
2007GMCYukon XL 1500SLE5.3V8FLEXDownstream Left
2007GMCYukon XL 1500SLE6.0V8GASDownstream RightB2S2; OE Equivalent Design
2007GMCYukon XL 1500SLT5.3V8FLEXDownstream RightB2S2; OE Equivalent Design
2007GMCYukon XL 1500Denali6.2V8GASDownstream RightB2S2; OE Equivalent Design
2007GMCYukon XL 1500SLE5.3V8FLEXDownstream RightB2S2; OE Equivalent Design
2007GMCYukon XL 1500SLT5.3V8FLEXDownstream Left
2007GMCYukon XL 1500SLT5.3V8GASDownstream RightB2S2; OE Equivalent Design
2007GMCYukon XL 1500SLE6.0V8GASDownstream Left
2007GMCYukon XL 1500Denali6.2V8GASDownstream Left
2007GMCYukon XL 2500SLT6.0V8GASDownstream Left
2007GMCYukon XL 2500SLT6.0V8GASDownstream RightB2S2; OE Equivalent Design
2007GMCYukon XL 2500SLE6.0V8GASDownstream Left
2007GMCYukon XL 2500SLE6.0V8GASDownstream RightB2S2; OE Equivalent Design
2007GMCSierra 1500WT4.3V6GASDownstream Left
2007GMCSierra 1500WT4.3V6GASDownstream RightB2S2; OE Equivalent Design
2007GMCSierra 1500 ClassicSL4.3V6GASDownstream Left
2007GMCSierra 1500 ClassicWT4.3V6GASDownstream RightB2S2; OE Equivalent Design
2007GMCSierra 1500 ClassicWT4.8V8GASDownstream Left
2007GMCSierra 1500 ClassicSLE4.8V8GASDownstream Left
2007GMCSierra 1500 ClassicWT4.8V8GASDownstream RightClassic Models; B2S2; GMT800 Platform; OE Equivalent Design
2007GMCSierra 1500 ClassicSL4.3V6GASDownstream RightB2S2; OE Equivalent Design
2007GMCSierra 1500 ClassicWT4.3V6GASDownstream Left
2007GMCSierra 1500 ClassicSLE4.8V8GASDownstream RightClassic Models; B2S2; GMT800 Platform; OE Equivalent Design
2007GMCSierra 1500 ClassicSL4.8V8GASDownstream RightClassic Models; B2S2; GMT800 Platform; OE Equivalent Design
2007GMCSierra 1500 ClassicSL4.8V8GASDownstream Left
2007HummerH2Base6.0V8GASDownstream RightB2S2; OE Equivalent Design
2007HummerH2Base6.0V8GASDownstream Left
2006CadillacCTSV6.0V8GASDownstream Left
2006CadillacCTSV6.0V8GASDownstream RightB2S2; OE Equivalent Design
2006ChevroletTahoeBase4.8V8GASDownstream Left
2006ChevroletTahoeLS4.8V8GASDownstream RightB2S2; OE Equivalent Design
2006ChevroletTahoeBase4.8V8GASDownstream RightB2S2; OE Equivalent Design
2006ChevroletTahoeLS4.8V8GASDownstream Left
2006ChevroletSilverado 1500WT4.8V8GASDownstream Left
2006ChevroletSilverado 1500WT4.8V8GASDownstream RightB2S2; OE Equivalent Design
2006ChevroletSilverado 1500LT4.8V8GASDownstream Left
2006ChevroletSilverado 1500LT4.8V8GASDownstream RightB2S2; OE Equivalent Design
2006ChevroletSilverado 1500LS4.8V8GASDownstream RightB2S2; OE Equivalent Design
2006ChevroletSilverado 1500LS4.8V8GASDownstream Left
2006GMCYukonSL4.8V8GASDownstream Left
2006GMCYukonSL4.8V8GASDownstream RightB2S2; OE Equivalent Design
2006GMCYukonSLE4.8V8GASDownstream RightB2S2; OE Equivalent Design
2006GMCYukonSLE4.8V8GASDownstream Left
2006GMCSierra 1500WT4.8V8GASDownstream Left
2006GMCSierra 1500SL4.8V8GASDownstream RightB2S2; OE Equivalent Design
2006GMCSierra 1500SLE4.8V8GASDownstream RightB2S2; OE Equivalent Design
2006GMCSierra 1500SL4.8V8GASDownstream Left
2006GMCSierra 1500WT4.8V8GASDownstream RightB2S2; OE Equivalent Design
2006GMCSierra 1500SLE4.8V8GASDownstream Left
2005ChevroletAstroBase4.3V6GASUpstream RightB2S1; OE Equivalent Design
2005ChevroletAstroBase4.3V6GASDownstream
2005ChevroletAstroLS4.3V6GASDownstream
2005ChevroletAstroLS4.3V6GASUpstream RightB2S1; OE Equivalent Design
2005ChevroletAstroLT4.3V6GASUpstream RightB2S1; OE Equivalent Design
2005ChevroletAstroLT4.3V6GASDownstream
2005GMCSafariSLE4.3V6GASDownstream
2005GMCSafariBase4.3V6GASUpstream RightB2S1; OE Equivalent Design
2005GMCSafariSLT4.3V6GASUpstream RightB2S1; OE Equivalent Design
2005GMCSafariSLT4.3V6GASDownstream
2005GMCSafariSLE4.3V6GASUpstream RightB2S1; OE Equivalent Design
2005GMCSafariBase4.3V6GASDownstream
2004ChevroletAstroBase4.3V6GASDownstream
2004ChevroletAstroLT4.3V6GASUpstream RightB2S1; OE Equivalent Design
2004ChevroletAstroLS4.3V6GASUpstream RightB2S1; OE Equivalent Design
2004ChevroletAstroLT4.3V6GASDownstream
2004ChevroletAstroLS4.3V6GASDownstream
2004ChevroletAstroBase4.3V6GASUpstream RightB2S1; OE Equivalent Design
2004GMCSafariBase4.3V6GASUpstream RightB2S1; OE Equivalent Design
2004GMCSafariBase4.3V6GASDownstream
2004GMCSafariSLE4.3V6GASUpstream RightB2S1; OE Equivalent Design
2004GMCSafariSLT4.3V6GASDownstream
2004GMCSafariSLE4.3V6GASDownstream
2004GMCSafariSLT4.3V6GASUpstream RightB2S1; OE Equivalent Design
2003IsuzuAscenderLS4.2L6GASUpstreamB1S1; OE MFR: NTK
2003IsuzuAscenderLimited4.2L6GASUpstreamB1S1; OE MFR: NTK
2003IsuzuAscenderBase4.2L6GASUpstreamB1S1; OE MFR: NTK
2003ChevroletAstroLS4.3V6GASDownstream
2003ChevroletAstroBase4.3V6GASUpstream RightB1S3; OE Equivalent Design
2003ChevroletAstroLS4.3V6GASUpstream RightB1S3; OE Equivalent Design
2003ChevroletAstroLT4.3V6GASUpstream RightB1S3; OE Equivalent Design
2003ChevroletAstroBase4.3V6GASDownstream
2003ChevroletAstroLT4.3V6GASDownstream
2003ChevroletTrailblazerLT4.2L6GASUpstreamB1S1; OE MFR: NTK
2003ChevroletTrailblazerNorth Face4.2L6GASUpstreamB1S1; OE MFR: NTK
2003ChevroletTrailblazerLS4.2L6GASUpstreamB1S1; OE MFR: NTK
2003ChevroletTrailblazerLTZ4.2L6GASUpstreamB1S1; OE MFR: NTK
2003ChevroletTrailblazer EXTLS4.2L6GASUpstreamB1S1; OE MFR: NTK
2003ChevroletTrailblazer EXTLT4.2L6GASUpstreamB1S1; OE MFR: NTK
2003ChevroletTrailblazer EXTNorth Face4.2L6GASUpstreamB1S1; OE MFR: NTK
2003GMCEnvoySLT4.2L6GASUpstreamB1S1; OE MFR: NTK
2003GMCEnvoySLE4.2L6GASUpstreamB1S1; OE MFR: NTK
2003GMCSafariBase4.3V6GASUpstream RightB2S1; OE Equivalent Design
2003GMCSafariBase4.3V6GASDownstream
2003GMCSafariSLT4.3V6GASUpstream RightB2S1; OE Equivalent Design
2003GMCSafariSLE4.3V6GASDownstream
2003GMCSafariSLE4.3V6GASUpstream RightB2S1; OE Equivalent Design
2003GMCSafariSLT4.3V6GASDownstream
2003GMCEnvoy XLSLT4.2L6GASUpstreamB1S1; OE MFR: NTK
2003GMCEnvoy XLSLE4.2L6GASUpstreamB1S1; OE MFR: NTK
2003OldsmobileBravadaBase4.2L6GASUpstreamB1S1; OE MFR: NTK
2002ChevroletTrailblazerNorth Face4.2L6GASUpstreamB1S1; OE MFR: NTK
2002ChevroletTrailblazerLT4.2L6GASUpstreamB1S1; OE MFR: NTK
2002ChevroletTrailblazerLS4.2L6GASUpstreamB1S1; OE MFR: NTK
2002ChevroletTrailblazerLTZ4.2L6GASUpstreamB1S1; OE MFR: NTK
2002ChevroletTrailblazer EXTNorth Face4.2L6GASUpstreamB1S1; OE MFR: NTK
2002ChevroletTrailblazer EXTLT4.2L6GASUpstreamB1S1; OE MFR: NTK
2002GMCEnvoySLT4.2L6GASUpstreamB1S1; OE MFR: NTK
2002GMCEnvoySLE4.2L6GASUpstreamB1S1; OE MFR: NTK
2002GMCEnvoy XLSLE4.2L6GASUpstreamB1S1; OE MFR: NTK
2002GMCEnvoy XLSLT4.2L6GASUpstreamB1S1; OE MFR: NTK
2002OldsmobileBravadaBase4.2L6GASUpstreamB1S1; OE MFR: NTK
Product info

The NTK Oxygen Sensor, part number 21049, is a top-quality replacement part designed to provide accurate readings of oxygen levels in the exhaust system of your Cadillac, Chevrolet, GMC, or Hummer. This sensor is manufactured using high-quality materials to ensure a long-lasting and reliable performance.

One of the key benefits of the NTK Oxygen Sensor is its ability to accurately monitor the oxygen levels in your vehicle’s exhaust system. This information is then relayed to your vehicle’s engine control module, which adjusts the fuel-to-air ratio for optimal performance and fuel efficiency. This results in improved engine performance, reduced emissions, and better fuel economy.

The NTK Oxygen Sensor, part number 21049, is designed to meet or exceed OEM specifications, ensuring a seamless fit and easy installation. It is also compatible with part number 8125775880, making it a versatile replacement part for a wide range of compatible vehicles.

Whether you’re a professional mechanic or a DIY enthusiast, the NTK Oxygen Sensor is an excellent choice for your vehicle. Its high-quality construction, accurate readings, and easy installation make it a reliable and cost-effective option for maintaining the performance and efficiency of your vehicle’s engine. So if you’re in need of a new oxygen sensor, choose the NTK Oxygen Sensor, part number 21049, and enjoy enhanced engine performance and fuel efficiency.

Specifications
California Proposition 65WARNING/Precaución: Cancer and Reproductive Harm - Cáncer y daño al sistema reproductivo - www.P65Warnings.ca.gov
Mounting TypeThreaded
Sensor TypeHeated
Thread Diameter18.000
Universal Or Specific FitSpecific
Wire Quantity4
Wiring Harness Length16.7500
Warranty
We offer a 2-year warranty on all parts that we sell. If the part fails within 2 years of purchase, please contact us for instructions to replace it. The warranty does not cover normal wear and tear or improper installation. On many parts, we also offer Extend product protection, which is a way to add up to 3 additional years for 5 total years of worry free coverage. Select your preferred term length and you're covered!
Delivery & Returns

Delivery Info

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Returns Info

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