Oxygen Sensor 21049
Oxygen Sensor 21049

NTK Oxygen Sensor 21049

Price
$123.76
Buying Options: OEM Genuine

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AUTO PART

NTK Oxygen Sensor 21049

Oxygen Sensor, OE Type

Manufacturer Part Number21049
Part TypeOxygen Sensor
BrandNTK
Verified vehicle applications are listed below. Match your exact vehicle configuration before ordering. Confirm by manufacturer part number and application before ordering.
Confirm year, make, model, engine and drivetrain before ordering.

Verified Vehicle Fitment

Make: Cadillac, Chevrolet, GMC, Hummer, Isuzu, Oldsmobile
Model: 24 verified models — see exact combinations below.
Years: 2002–2007 — varies by model and configuration.

Check before ordering: Match the year, make, model, position, and every engine, transmission or other restriction in the same row. Listed years do not apply to every model.

View vehicle applications (56 configuration groups)
Years Make Model Position Engine / transmission / notes
2006 Cadillac CTS Downstream Left Engine: 6.0 V8; B1S2, OE Equivalent Design
2006 Cadillac CTS Downstream Right Engine: 6.0 V8; B2S2, OE Equivalent Design
2007 Cadillac Escalade Downstream Left B1S2, OE Equivalent Design
2007 Cadillac Escalade Downstream Right B2S2, OE Equivalent Design
2007 Cadillac Escalade ESV Downstream Left B1S2, OE Equivalent Design
2007 Cadillac Escalade ESV Downstream Right B2S2, OE Equivalent Design
2007 Cadillac Escalade EXT Downstream Left B1S2, OE Equivalent Design
2007 Cadillac Escalade EXT Downstream Right B2S2, OE Equivalent Design
2003–2005 Chevrolet Astro Downstream B1S3, OE Equivalent Design
2003–2005 Chevrolet Astro Upstream Right B2S1, OE Equivalent Design
2007 Chevrolet Avalanche Downstream Left B1S2, OE Equivalent Design
2007 Chevrolet Avalanche Downstream Right B2S2, OE Equivalent Design
2007 Chevrolet Silverado 1500 Downstream Left Engine: 4.3 V6; B1S2, OE Equivalent Design
2006 Chevrolet Silverado 1500 Downstream Left Engine: 4.8 V8; B1S2, OE Equivalent Design
2007 Chevrolet Silverado 1500 Downstream Right Engine: 4.3 V6; B2S2, OE Equivalent Design
2006 Chevrolet Silverado 1500 Downstream Right Engine: 4.8 V8; B2S2, OE Equivalent Design
2007 Chevrolet Silverado 1500 Classic Downstream Left Engine: 4.8 V8; B1S2, GMT800 Platform; Classic Models, OE Equivalent Design
2007 Chevrolet Silverado 1500 Classic Downstream Left Engine: 4.3 V6; B1S2, OE Equivalent Design
2007 Chevrolet Silverado 1500 Classic Downstream Right Engine: 4.8 V8; B2S2, GMT800 Platform; Classic Models, OE Equivalent Design
2007 Chevrolet Silverado 1500 Classic Downstream Right Engine: 4.3 V6; B2S2, OE Equivalent Design
2007 Chevrolet Suburban 1500 Downstream Left B1S2, OE Equivalent Design
2007 Chevrolet Suburban 1500 Downstream Right B2S2, OE Equivalent Design
2007 Chevrolet Suburban 2500 Downstream Left B1S2, OE Equivalent Design
2007 Chevrolet Suburban 2500 Downstream Right B2S2, OE Equivalent Design
2007 Chevrolet Tahoe Downstream Left B1S2, OE Equivalent Design
2006 Chevrolet Tahoe Downstream Left Engine: 4.8 V8; B1S2, OE Equivalent Design
2007 Chevrolet Tahoe Downstream Right B2S2, OE Equivalent Design
2006 Chevrolet Tahoe Downstream Right Engine: 4.8 V8; B2S2, OE Equivalent Design
2002–2003 Chevrolet Trailblazer Upstream B1S1, OE MFR: NTK
2002 Chevrolet Trailblazer EXT Upstream B1S1, OE MFR: NTK
2003 Chevrolet Trailblazer EXT Upstream Engine: 4.2 L6; B1S1, OE MFR: NTK
2002–2003 GMC Envoy Upstream B1S1, OE MFR: NTK
2002 GMC Envoy XL Upstream B1S1, OE MFR: NTK
2003 GMC Envoy XL Upstream Engine: 4.2 L6; B1S1, OE MFR: NTK
2003–2005 GMC Safari Downstream B1S3, OE Equivalent Design
2003–2005 GMC Safari Upstream Right B2S1, OE Equivalent Design
2007 GMC Sierra 1500 Downstream Left Engine: 4.3 V6; B1S2, OE Equivalent Design
2006 GMC Sierra 1500 Downstream Left Engine: 4.8 V8; B1S2, OE Equivalent Design
2007 GMC Sierra 1500 Downstream Right Engine: 4.3 V6; B2S2, OE Equivalent Design
2006 GMC Sierra 1500 Downstream Right Engine: 4.8 V8; B2S2, OE Equivalent Design
2007 GMC Sierra 1500 Classic Downstream Left Engine: 4.8 V8; B1S2, GMT800 Platform; Classic Models, OE Equivalent Design
2007 GMC Sierra 1500 Classic Downstream Left Engine: 4.3 V6; B1S2, OE Equivalent Design
2007 GMC Sierra 1500 Classic Downstream Right Engine: 4.8 V8; B2S2, GMT800 Platform; Classic Models, OE Equivalent Design
2007 GMC Sierra 1500 Classic Downstream Right Engine: 4.3 V6; B2S2, OE Equivalent Design
2007 GMC Yukon Downstream Left B1S2, OE Equivalent Design
2006 GMC Yukon Downstream Left Engine: 4.8 V8; B1S2, OE Equivalent Design
2007 GMC Yukon Downstream Right B2S2, OE Equivalent Design
2006 GMC Yukon Downstream Right Engine: 4.8 V8; B2S2, OE Equivalent Design
2007 GMC Yukon XL 1500 Downstream Left B1S2, OE Equivalent Design
2007 GMC Yukon XL 1500 Downstream Right B2S2, OE Equivalent Design
2007 GMC Yukon XL 2500 Downstream Left B1S2, OE Equivalent Design
2007 GMC Yukon XL 2500 Downstream Right B2S2, OE Equivalent Design
2007 Hummer H2 Downstream Left B1S2, OE Equivalent Design
2007 Hummer H2 Downstream Right B2S2, OE Equivalent Design
2003 Isuzu Ascender Upstream Engine: 4.2 L6; B1S1, OE MFR: NTK
2002–2003 Oldsmobile Bravada Upstream B1S1, OE MFR: NTK

Source: supplier-verified applications for NTK 21049. A vehicle not listed is not confirmed compatible.

Shop more parts for your vehicle

Browse these vehicle parts pages, then check the restrictions on each product. Not every part on a vehicle page fits every engine or configuration.

Cadillac CTS

2006

Chevrolet Astro

2005 2004

Hummer H2

2007

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Verified

All brand names are the property of their respective owners and are used for compatibility reference only.

Verified vehicle applications

Match every engine, transmission, position and other restriction before ordering. See the Verified Vehicle Fitment table for full application details.

  • 2006 Cadillac CTS — Position: Downstream Left; Engine: 6.0 V8; B1S2, OE Equivalent Design
  • 2006 Cadillac CTS — Position: Downstream Right; Engine: 6.0 V8; B2S2, OE Equivalent Design
  • 2007 Cadillac Escalade — Position: Downstream Left; B1S2, OE Equivalent Design
  • 2007 Cadillac Escalade — Position: Downstream Right; B2S2, OE Equivalent Design
  • 2007 Cadillac Escalade ESV — Position: Downstream Left; B1S2, OE Equivalent Design
  • 2007 Cadillac Escalade ESV — Position: Downstream Right; B2S2, OE Equivalent Design
  • 2007 Cadillac Escalade EXT — Position: Downstream Left; B1S2, OE Equivalent Design
  • 2007 Cadillac Escalade EXT — Position: Downstream Right; B2S2, OE Equivalent Design
  • 2003–2005 Chevrolet Astro — Position: Downstream; B1S3, OE Equivalent Design
  • 2003–2005 Chevrolet Astro — Position: Upstream Right; B2S1, OE Equivalent Design
  • 2007 Chevrolet Avalanche — Position: Downstream Left; B1S2, OE Equivalent Design
  • 2007 Chevrolet Avalanche — Position: Downstream Right; B2S2, OE Equivalent Design
  • 2007 Chevrolet Silverado 1500 — Position: Downstream Left; Engine: 4.3 V6; B1S2, OE Equivalent Design
  • 2006 Chevrolet Silverado 1500 — Position: Downstream Left; Engine: 4.8 V8; B1S2, OE Equivalent Design
  • 2007 Chevrolet Silverado 1500 — Position: Downstream Right; Engine: 4.3 V6; B2S2, OE Equivalent Design
  • 2006 Chevrolet Silverado 1500 — Position: Downstream Right; Engine: 4.8 V8; B2S2, OE Equivalent Design
  • 2007 Chevrolet Silverado 1500 Classic — Position: Downstream Left; Engine: 4.8 V8; B1S2, GMT800 Platform; Classic Models, OE Equivalent Design
  • 2007 Chevrolet Silverado 1500 Classic — Position: Downstream Left; Engine: 4.3 V6; B1S2, OE Equivalent Design
  • 2007 Chevrolet Silverado 1500 Classic — Position: Downstream Right; Engine: 4.8 V8; B2S2, GMT800 Platform; Classic Models, OE Equivalent Design
  • 2007 Chevrolet Silverado 1500 Classic — Position: Downstream Right; Engine: 4.3 V6; B2S2, OE Equivalent Design
  • 2007 Chevrolet Suburban 1500 — Position: Downstream Left; B1S2, OE Equivalent Design
  • 2007 Chevrolet Suburban 1500 — Position: Downstream Right; B2S2, OE Equivalent Design
  • 2007 Chevrolet Suburban 2500 — Position: Downstream Left; B1S2, OE Equivalent Design
  • 2007 Chevrolet Suburban 2500 — Position: Downstream Right; B2S2, OE Equivalent Design
  • 2007 Chevrolet Tahoe — Position: Downstream Left; B1S2, OE Equivalent Design
  • 2006 Chevrolet Tahoe — Position: Downstream Left; Engine: 4.8 V8; B1S2, OE Equivalent Design
  • 2007 Chevrolet Tahoe — Position: Downstream Right; B2S2, OE Equivalent Design
  • 2006 Chevrolet Tahoe — Position: Downstream Right; Engine: 4.8 V8; B2S2, OE Equivalent Design
  • 2002–2003 Chevrolet Trailblazer — Position: Upstream; B1S1, OE MFR: NTK
  • 2002 Chevrolet Trailblazer EXT — Position: Upstream; B1S1, OE MFR: NTK
  • 2003 Chevrolet Trailblazer EXT — Position: Upstream; Engine: 4.2 L6; B1S1, OE MFR: NTK
  • 2002–2003 GMC Envoy — Position: Upstream; B1S1, OE MFR: NTK
  • 2002 GMC Envoy XL — Position: Upstream; B1S1, OE MFR: NTK
  • 2003 GMC Envoy XL — Position: Upstream; Engine: 4.2 L6; B1S1, OE MFR: NTK
  • 2003–2005 GMC Safari — Position: Downstream; B1S3, OE Equivalent Design
  • 2003–2005 GMC Safari — Position: Upstream Right; B2S1, OE Equivalent Design
  • 2007 GMC Sierra 1500 — Position: Downstream Left; Engine: 4.3 V6; B1S2, OE Equivalent Design
  • 2006 GMC Sierra 1500 — Position: Downstream Left; Engine: 4.8 V8; B1S2, OE Equivalent Design
  • 2007 GMC Sierra 1500 — Position: Downstream Right; Engine: 4.3 V6; B2S2, OE Equivalent Design
  • 2006 GMC Sierra 1500 — Position: Downstream Right; Engine: 4.8 V8; B2S2, OE Equivalent Design
  • 2007 GMC Sierra 1500 Classic — Position: Downstream Left; Engine: 4.8 V8; B1S2, GMT800 Platform; Classic Models, OE Equivalent Design
  • 2007 GMC Sierra 1500 Classic — Position: Downstream Left; Engine: 4.3 V6; B1S2, OE Equivalent Design
  • 2007 GMC Sierra 1500 Classic — Position: Downstream Right; Engine: 4.8 V8; B2S2, GMT800 Platform; Classic Models, OE Equivalent Design
  • 2007 GMC Sierra 1500 Classic — Position: Downstream Right; Engine: 4.3 V6; B2S2, OE Equivalent Design
  • 2007 GMC Yukon — Position: Downstream Left; B1S2, OE Equivalent Design
  • 2006 GMC Yukon — Position: Downstream Left; Engine: 4.8 V8; B1S2, OE Equivalent Design
  • 2007 GMC Yukon — Position: Downstream Right; B2S2, OE Equivalent Design
  • 2006 GMC Yukon — Position: Downstream Right; Engine: 4.8 V8; B2S2, OE Equivalent Design
  • 2007 GMC Yukon XL 1500 — Position: Downstream Left; B1S2, OE Equivalent Design
  • 2007 GMC Yukon XL 1500 — Position: Downstream Right; B2S2, OE Equivalent Design
  • 2007 GMC Yukon XL 2500 — Position: Downstream Left; B1S2, OE Equivalent Design
  • 2007 GMC Yukon XL 2500 — Position: Downstream Right; B2S2, OE Equivalent Design
  • 2007 Hummer H2 — Position: Downstream Left; B1S2, OE Equivalent Design
  • 2007 Hummer H2 — Position: Downstream Right; B2S2, OE Equivalent Design
  • 2003 Isuzu Ascender — Position: Upstream; Engine: 4.2 L6; B1S1, OE MFR: NTK
  • 2002–2003 Oldsmobile Bravada — Position: Upstream; B1S1, OE MFR: NTK