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Oxygen Sensor 21545 – NTK

PART#: 21545

NTK

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$51.19

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Interchanges

Brand	Part #

CARQUEST	75-2651 / 752651
Bosch	15434
BWD	OS2418
General Motors	12589550
Standard Motor Products	SG1300
Standard Motor Products	SG1826
BWD	OS2133
General Motors	19209805
Bosch	15543
DENSO Auto Parts	234-4406 / 2344406
BWD	OS1691
ACDelco	213-3537 / 2133537
CARQUEST	75-3034 / 753034
CARQUEST	75-3682 / 753682
ACDelco	213-1531 / 2131531
Bosch	15550
Standard Motor Products	SG1585
Bosch	15129
ACDelco	213-1633 / 2131633
Delphi	ES20113
DENSO Auto Parts	234-4294 / 2344294
DENSO Auto Parts	234-4285 / 2344285
DENSO Auto Parts	234-4344 / 2344344
Standard Motor Products	SG937
ACDelco	213-2830 / 2132830
Bosch	15894

Fitments

Year	Make	Model	Submodel	Engine	Fuel Type	Position	Note
2007	Chevrolet	Express 1500	LS	5.3V8	GAS	Downstream Right
2007	Chevrolet	Express 1500	LT	5.3V8	GAS	Downstream Right
2007	Chevrolet	Express 1500	LT	5.3V8	FLEX	Upstream Right	B2S2; Federal Emissions; OE Equivalent Design
2007	Chevrolet	Express 1500	LS	5.3V8	FLEX	Upstream Right	B2S2; Federal Emissions; OE Equivalent Design
2007	Chevrolet	Express 1500	Base	5.3V8	FLEX	Downstream Right
2007	Chevrolet	Express 1500	Base	5.3V8	GAS	Upstream Right	B2S2; Federal Emissions; OE Equivalent Design
2007	Chevrolet	Express 1500	Base	5.3V8	FLEX	Upstream Right	B2S2; Federal Emissions; OE Equivalent Design
2007	Chevrolet	Express 1500	LT	5.3V8	GAS	Upstream Right	B2S2; Federal Emissions; OE Equivalent Design
2007	Chevrolet	Express 1500	LT	5.3V8	FLEX	Downstream Right
2007	Chevrolet	Express 1500	LS	5.3V8	GAS	Upstream Right	B2S2; Federal Emissions; OE Equivalent Design
2007	Chevrolet	Express 1500	Base	5.3V8	GAS	Downstream Right
2007	Chevrolet	Express 1500	LS	5.3V8	FLEX	Downstream Right
2007	Chevrolet	Express 2500	Base	6.0V8	GAS	Upstream Right	B2S1; OE Equivalent Design
2007	Chevrolet	Express 2500	LS	6.0V8	GAS	Upstream Right	B2S1; OE Equivalent Design
2007	Chevrolet	Express 2500	LT	6.0V8	GAS	Downstream Right
2007	Chevrolet	Express 2500	LS	6.0V8	GAS	Downstream Right
2007	Chevrolet	Express 2500	Base	6.0V8	GAS	Downstream Right
2007	Chevrolet	Express 2500	LT	6.0V8	GAS	Upstream Right	B2S1; OE Equivalent Design
2007	Chevrolet	Express 2500	Base	4.8V8	GAS	Downstream Right
2007	Chevrolet	Express 2500	Base	4.8V8	GAS	Upstream Right	B2S1; OE Equivalent Design
2007	Chevrolet	Express 3500	Base	6.0V8	GAS	Upstream Right	B2S1; OE Equivalent Design
2007	Chevrolet	Express 3500	Base	4.8V8	GAS	Upstream Right	B2S1; OE Equivalent Design
2007	Chevrolet	Express 3500	LS	6.0V8	GAS	Upstream Right	B2S1; OE Equivalent Design
2007	Chevrolet	Express 3500	LS	6.0V8	GAS	Downstream Right
2007	Chevrolet	Express 3500	LT	6.0V8	GAS	Downstream Right
2007	Chevrolet	Express 3500	Base	4.8V8	GAS	Downstream Right
2007	Chevrolet	Express 3500	LT	6.0V8	GAS	Upstream Right	B2S1; OE Equivalent Design
2007	Chevrolet	Express 3500	Base	6.0V8	GAS	Downstream Right
2007	GMC	Savana 1500	LT	5.3V8	GAS	Upstream Right	B2S1; Federal Emissions; OE Equivalent Design
2007	GMC	Savana 1500	LS	5.3V8	FLEX	Downstream Right
2007	GMC	Savana 1500	LT	5.3V8	GAS	Downstream Right
2007	GMC	Savana 1500	LS	5.3V8	GAS	Downstream Right
2007	GMC	Savana 1500	LS	5.3V8	FLEX	Upstream Right	B2S1; Federal Emissions; OE Equivalent Design
2007	GMC	Savana 1500	Base	5.3V8	FLEX	Upstream Right	B2S1; Federal Emissions; OE Equivalent Design
2007	GMC	Savana 1500	Base	5.3V8	GAS	Upstream Right	B2S1; Federal Emissions; OE Equivalent Design
2007	GMC	Savana 1500	LT	5.3V8	FLEX	Upstream Right	B2S1; Federal Emissions; OE Equivalent Design
2007	GMC	Savana 1500	Base	5.3V8	FLEX	Downstream Right
2007	GMC	Savana 1500	LT	5.3V8	FLEX	Downstream Right
2007	GMC	Savana 1500	Base	5.3V8	GAS	Downstream Right
2007	GMC	Savana 1500	LS	5.3V8	GAS	Upstream Right	B2S1; Federal Emissions; OE Equivalent Design
2007	GMC	Savana 2500	Base	6.0V8	GAS	Upstream Right	B2S1; OE Equivalent Design
2007	GMC	Savana 2500	Base	6.0V8	GAS	Downstream Right
2007	GMC	Savana 2500	LT	6.0V8	GAS	Downstream Right
2007	GMC	Savana 2500	Base	4.8V8	GAS	Downstream Right
2007	GMC	Savana 2500	Base	4.8V8	GAS	Upstream Right	B2S1; OE Equivalent Design
2007	GMC	Savana 2500	LS	6.0V8	GAS	Downstream Right
2007	GMC	Savana 2500	LS	6.0V8	GAS	Upstream Right	B2S1; OE Equivalent Design
2007	GMC	Savana 2500	LT	6.0V8	GAS	Upstream Right	B2S1; OE Equivalent Design
2007	GMC	Savana 3500	LS	6.0V8	GAS	Upstream Right	B2S1; OE Equivalent Design
2007	GMC	Savana 3500	Base	6.0V8	GAS	Upstream Right	B2S1; OE Equivalent Design
2007	GMC	Savana 3500	Base	4.8V8	GAS	Upstream Right	B2S1; OE Equivalent Design
2007	GMC	Savana 3500	LT	6.0V8	GAS	Downstream Right
2007	GMC	Savana 3500	LS	6.0V8	GAS	Downstream Right
2007	GMC	Savana 3500	Base	6.0V8	GAS	Downstream Right
2007	GMC	Savana 3500	LT	6.0V8	GAS	Upstream Right	B2S1; OE Equivalent Design
2007	GMC	Savana 3500	Base	4.8V8	GAS	Downstream Right
2006	Isuzu	Ascender	LS	5.3V8	GAS	Downstream Left
2006	Isuzu	Ascender	LS	5.3V8	GAS	Downstream Right	Square Connector; 1st Design; B1S2; OE Equivalent Design
2006	Buick	Rainier	CXL	5.3V8	GAS	Downstream Right	Square Connector; 1st Design; B1S2; OE Equivalent Design
2006	Buick	Rainier	CXL	5.3V8	GAS	Downstream Left
2006	Chevrolet	SSR	Base	6.0V8	GAS	Downstream Right	Square Connector; 1st Design; B1S2; OE Equivalent Design
2006	Chevrolet	SSR	Base	6.0V8	GAS	Downstream Left
2006	Chevrolet	Trailblazer	SS	6.0V8	GAS	Downstream Left
2006	Chevrolet	Trailblazer	SS	6.0V8	GAS	Downstream Right	Square Connector; 1st Design; B2S2; OE Equivalent Design
2006	Chevrolet	Trailblazer	LS	5.3V8	GAS	Downstream Left
2006	Chevrolet	Trailblazer	LS	5.3V8	GAS	Downstream Right	Square Connector; 1st Design; B1S2; OE Equivalent Design
2006	Chevrolet	Trailblazer	LT	5.3V8	GAS	Downstream Left
2006	Chevrolet	Trailblazer	LT	5.3V8	GAS	Downstream Right	Square Connector; 1st Design; B1S2; OE Equivalent Design
2006	Chevrolet	Express 1500	Base	4.3V6	GAS	Downstream Right
2006	Chevrolet	Express 1500	LS	5.3V8	GAS	Downstream Right
2006	Chevrolet	Express 1500	LS	4.3V6	GAS	Downstream Right
2006	Chevrolet	Express 1500	LT	4.3V6	GAS	Upstream Right	B2S1; OE Equivalent Design
2006	Chevrolet	Express 1500	LT	4.3V6	GAS	Downstream Right
2006	Chevrolet	Express 1500	LT	5.3V8	GAS	Downstream Right
2006	Chevrolet	Express 1500	LT	5.3V8	GAS	Upstream Right	B2S1; OE Equivalent Design
2006	Chevrolet	Express 1500	Base	4.3V6	GAS	Upstream Right	B2S1; OE Equivalent Design
2006	Chevrolet	Express 1500	LS	4.3V6	GAS	Upstream Right	B2S1; OE Equivalent Design
2006	Chevrolet	Express 1500	LS	5.3V8	GAS	Upstream Right	B2S1; OE Equivalent Design
2006	Chevrolet	Express 1500	Base	5.3V8	GAS	Upstream Right	B2S1; OE Equivalent Design
2006	Chevrolet	Express 1500	Base	5.3V8	GAS	Downstream Right
2006	Chevrolet	Express 2500	Base	4.8V8	GAS	Upstream Right	B2S1; OE Equivalent Design
2006	Chevrolet	Express 2500	Base	4.8V8	GAS	Downstream Right
2006	Chevrolet	Express 2500	LS	6.0V8	GAS	Downstream Right
2006	Chevrolet	Express 2500	LS	4.8V8	GAS	Upstream Right	B2S1; OE Equivalent Design
2006	Chevrolet	Express 2500	LT	4.8V8	GAS	Downstream Right
2006	Chevrolet	Express 2500	LT	6.0V8	GAS	Downstream Right
2006	Chevrolet	Express 2500	LT	4.8V8	GAS	Upstream Right	B2S1; OE Equivalent Design
2006	Chevrolet	Express 2500	Base	6.0V8	GAS	Downstream Right
2006	Chevrolet	Express 2500	LS	6.0V8	GAS	Upstream Right	B2S1; OE Equivalent Design
2006	Chevrolet	Express 2500	Base	4.3V6	GAS	Upstream Right	B2S1; OE Equivalent Design
2006	Chevrolet	Express 2500	Base	4.3V6	GAS	Downstream Right
2006	Chevrolet	Express 2500	LT	6.0V8	GAS	Upstream Right	B2S1; OE Equivalent Design
2006	Chevrolet	Express 2500	Base	6.0V8	GAS	Upstream Right	B2S1; OE Equivalent Design
2006	Chevrolet	Express 2500	LS	4.8V8	GAS	Downstream Right
2006	Chevrolet	Express 3500	LS	6.0V8	GAS	Downstream Right
2006	Chevrolet	Express 3500	Base	4.8V8	GAS	Upstream Right	B2S1; OE Equivalent Design
2006	Chevrolet	Express 3500	LT	6.0V8	GAS	Downstream Right
2006	Chevrolet	Express 3500	Base	4.8V8	GAS	Downstream Right
2006	Chevrolet	Express 3500	LT	6.0V8	GAS	Upstream Right	B2S1; OE Equivalent Design
2006	Chevrolet	Express 3500	Base	6.0V8	GAS	Upstream Right	B2S1; OE Equivalent Design
2006	Chevrolet	Express 3500	Base	6.0V8	GAS	Downstream Right
2006	Chevrolet	Express 3500	LS	6.0V8	GAS	Upstream Right	B2S1; OE Equivalent Design
2006	Chevrolet	Trailblazer EXT	LS	5.3V8	GAS	Downstream Left
2006	Chevrolet	Trailblazer EXT	LS	5.3V8	GAS	Downstream Right	Square Connector; 1st Design; B2S2; OE Equivalent Design
2006	Chevrolet	Trailblazer EXT	LT	5.3V8	GAS	Downstream Left
2006	Chevrolet	Trailblazer EXT	LT	5.3V8	GAS	Downstream Right	Square Connector; 1st Design; B2S2; OE Equivalent Design
2006	GMC	Envoy	Denali	5.3V8	GAS	Downstream Right	Square Connector; 1st Design; B1S2; OE Equivalent Design
2006	GMC	Envoy	Denali	5.3V8	GAS	Downstream Left
2006	GMC	Savana 1500	LT	5.3V8	GAS	Upstream Right	B2S1; OE Equivalent Design
2006	GMC	Savana 1500	Base	4.3V6	GAS	Upstream Right	B2S1; OE Equivalent Design
2006	GMC	Savana 1500	LS	4.3V6	GAS	Upstream Right	B2S1; OE Equivalent Design
2006	GMC	Savana 1500	LS	5.3V8	GAS	Upstream Right	B2S1; OE Equivalent Design
2006	GMC	Savana 1500	Base	5.3V8	GAS	Upstream Right	B2S1; OE Equivalent Design
2006	GMC	Savana 1500	LT	4.3V6	GAS	Downstream Right
2006	GMC	Savana 1500	Base	4.3V6	GAS	Downstream Right
2006	GMC	Savana 1500	Base	5.3V8	GAS	Downstream Right
2006	GMC	Savana 1500	LT	4.3V6	GAS	Upstream Right	B2S1; OE Equivalent Design
2006	GMC	Savana 1500	LS	5.3V8	GAS	Downstream Right
2006	GMC	Savana 1500	LT	5.3V8	GAS	Downstream Right
2006	GMC	Savana 1500	LS	4.3V6	GAS	Downstream Right
2006	GMC	Savana 2500	Base	4.3V6	GAS	Downstream Right
2006	GMC	Savana 2500	Base	4.8V8	GAS	Upstream Right	B2S1; OE Equivalent Design
2006	GMC	Savana 2500	Base	4.3V6	GAS	Upstream Right	B2S1; OE Equivalent Design
2006	GMC	Savana 2500	Base	6.0V8	GAS	Downstream Right
2006	GMC	Savana 2500	Base	4.8V8	GAS	Downstream Right
2006	GMC	Savana 2500	Base	6.0V8	GAS	Upstream Right	B2S1; OE Equivalent Design
2006	GMC	Savana 3500	Base	4.8V8	GAS	Downstream Right
2006	GMC	Savana 3500	LS	6.0V8	GAS	Upstream Right	B2S1; OE Equivalent Design
2006	GMC	Savana 3500	LT	6.0V8	GAS	Upstream Right	B2S1; OE Equivalent Design
2006	GMC	Savana 3500	Base	6.0V8	GAS	Downstream Right
2006	GMC	Savana 3500	Base	4.8V8	GAS	Upstream Right	B2S1; OE Equivalent Design
2006	GMC	Savana 3500	LT	6.0V8	GAS	Downstream Right
2006	GMC	Savana 3500	Base	6.0V8	GAS	Upstream Right	B2S1; OE Equivalent Design
2006	GMC	Savana 3500	LS	6.0V8	GAS	Downstream Right
2006	GMC	Envoy XL	Denali	5.3V8	GAS	Downstream Right	Square Connector; 1st Design; B1S2; OE Equivalent Design
2006	GMC	Envoy XL	Denali	5.3V8	GAS	Downstream Left
2006	Saab	9-7x	5.3i	5.3V8	GAS	Downstream Right	Square Connector; 1st Design; B2S2; OE Equivalent Design
2006	Saab	9-7x	5.3i	5.3V8	GAS	Downstream Left
2005	Chevrolet	Astro	LS	4.3V6	GAS	Upstream Left	B1S1; OE Equivalent Design
2005	Chevrolet	Astro	Base	4.3V6	GAS	Upstream Left	B1S1; OE Equivalent Design
2005	Chevrolet	Astro	LT	4.3V6	GAS	Upstream Left	B1S1; OE Equivalent Design
2005	Chevrolet	Express 1500	LS	5.3V8	GAS	Upstream Right	B2S1; OE Equivalent Design
2005	Chevrolet	Express 1500	LS	5.3V8	GAS	Downstream Right
2005	Chevrolet	Express 1500	Base	4.3V6	GAS	Downstream Right
2005	Chevrolet	Express 1500	LS	4.3V6	GAS	Downstream Right
2005	Chevrolet	Express 1500	Base	5.3V8	GAS	Upstream Right	B2S1; OE Equivalent Design
2005	Chevrolet	Express 1500	Base	4.3V6	GAS	Upstream Right	B2S1; OE Equivalent Design
2005	Chevrolet	Express 1500	LS	4.3V6	GAS	Upstream Right	B2S1; OE Equivalent Design
2005	Chevrolet	Express 1500	Base	5.3V8	GAS	Downstream Right
2005	Chevrolet	Express 2500	Base	4.3V6	GAS	Upstream Right	B2S1; OE Equivalent Design
2005	Chevrolet	Express 2500	LS	4.8V8	GAS	Upstream Right	B2S1; OE Equivalent Design
2005	Chevrolet	Express 2500	Base	5.3V8	GAS	Downstream Right
2005	Chevrolet	Express 2500	Base	6.0V8	GAS	Downstream Right
2005	Chevrolet	Express 2500	LS	4.3V6	GAS	Upstream Right	B2S1; OE Equivalent Design
2005	Chevrolet	Express 2500	LS	6.0V8	CNG	Downstream Right
2005	Chevrolet	Express 2500	LS	5.3V8	GAS	Downstream Right
2005	Chevrolet	Express 2500	Base	4.3V6	GAS	Downstream Right
2005	Chevrolet	Express 2500	Base	6.0V8	GAS	Upstream Right	B2S1; OE Equivalent Design
2005	Chevrolet	Express 2500	Base	4.8V8	GAS	Upstream Right	B2S1; OE Equivalent Design
2005	Chevrolet	Express 2500	LS	6.0V8	GAS	Upstream Right	B2S1; OE Equivalent Design
2005	Chevrolet	Express 2500	LS	6.0V8	CNG	Upstream Right	B2S1; OE Equivalent Design
2005	Chevrolet	Express 2500	LS	4.3V6	GAS	Downstream Right
2005	Chevrolet	Express 2500	LS	5.3V8	GAS	Upstream Right	B2S1; OE Equivalent Design
2005	Chevrolet	Express 2500	LS	4.8V8	GAS	Downstream Right
2005	Chevrolet	Express 2500	Base	6.0V8	CNG	Upstream Right	B2S1; OE Equivalent Design
2005	Chevrolet	Express 2500	Base	6.0V8	CNG	Downstream Right
2005	Chevrolet	Express 2500	Base	4.8V8	GAS	Downstream Right
2005	Chevrolet	Express 2500	Base	5.3V8	GAS	Upstream Right	B2S1; OE Equivalent Design
2005	Chevrolet	Express 2500	LS	6.0V8	GAS	Downstream Right
2005	Chevrolet	Express 3500	Base	6.0V8	CNG	Upstream Right	B2S1; OE Equivalent Design
2005	Chevrolet	Express 3500	Base	6.0V8	CNG	Downstream Right
2005	Chevrolet	Express 3500	LS	6.0V8	GAS	Upstream Right	B2S1; OE Equivalent Design
2005	Chevrolet	Express 3500	Base	6.0V8	GAS	Downstream Right
2005	Chevrolet	Express 3500	Base	4.8V8	GAS	Downstream Right
2005	Chevrolet	Express 3500	LS	6.0V8	GAS	Downstream Right
2005	Chevrolet	Express 3500	Base	6.0V8	GAS	Upstream Right	B2S1; OE Equivalent Design
2005	Chevrolet	Express 3500	Base	4.8V8	GAS	Upstream Right	B2S1; OE Equivalent Design
2005	Chevrolet	Express 3500	LS	6.0V8	CNG	Upstream Right	B2S1; OE Equivalent Design
2005	Chevrolet	Express 3500	LS	6.0V8	CNG	Downstream Right
2005	Chevrolet	Express 3500	LS	4.8V8	GAS	Upstream Right	B2S1; OE Equivalent Design
2005	Chevrolet	Express 3500	LS	4.8V8	GAS	Downstream Right
2005	GMC	Safari	SLT	4.3V6	GAS	Upstream Left	B1S1; OE Equivalent Design
2005	GMC	Safari	SLE	4.3V6	GAS	Upstream Left	B1S1; OE Equivalent Design
2005	GMC	Safari	Base	4.3V6	GAS	Upstream Left	B1S1; OE Equivalent Design
2005	GMC	Savana 1500	SLE	4.3V6	GAS	Downstream Right
2005	GMC	Savana 1500	SLE	5.3V8	GAS	Upstream Right	B2S1; OE Equivalent Design
2005	GMC	Savana 1500	SLE	5.3V8	GAS	Downstream Right
2005	GMC	Savana 1500	Base	5.3V8	GAS	Upstream Right	B2S1; OE Equivalent Design
2005	GMC	Savana 1500	Base	4.3V6	GAS	Upstream Right	B2S1; OE Equivalent Design
2005	GMC	Savana 1500	SLE	4.3V6	GAS	Upstream Right	B2S1; OE Equivalent Design
2005	GMC	Savana 1500	Base	5.3V8	GAS	Downstream Right
2005	GMC	Savana 1500	Base	4.3V6	GAS	Downstream Right
2005	GMC	Savana 2500	SLE	4.3V6	GAS	Upstream Right	B2S1; OE Equivalent Design
2005	GMC	Savana 2500	Base	5.3V8	GAS	Downstream Right
2005	GMC	Savana 2500	SLE	4.8V8	GAS	Upstream Right	B2S1; OE Equivalent Design
2005	GMC	Savana 2500	SLE	4.8V8	GAS	Downstream Right
2005	GMC	Savana 2500	Base	6.0V8	GAS	Upstream Right	B2S1; OE Equivalent Design
2005	GMC	Savana 2500	Base	6.0V8	GAS	Downstream Right
2005	GMC	Savana 2500	Base	4.8V8	GAS	Downstream Right
2005	GMC	Savana 2500	SLE	6.0V8	GAS	Downstream Right
2005	GMC	Savana 2500	SLE	5.3V8	GAS	Upstream Right	B2S1; OE Equivalent Design
2005	GMC	Savana 2500	SLE	6.0V8	CNG	Upstream Right	B2S1; OE Equivalent Design
2005	GMC	Savana 2500	SLE	4.3V6	GAS	Downstream Right
2005	GMC	Savana 2500	Base	6.0V8	CNG	Downstream Right
2005	GMC	Savana 2500	Base	4.8V8	GAS	Upstream Right	B2S1; OE Equivalent Design
2005	GMC	Savana 2500	SLE	6.0V8	GAS	Upstream Right	B2S1; OE Equivalent Design
2005	GMC	Savana 2500	Base	6.0V8	CNG	Upstream Right	B2S1; OE Equivalent Design
2005	GMC	Savana 2500	SLE	6.0V8	CNG	Downstream Right
2005	GMC	Savana 2500	SLE	5.3V8	GAS	Downstream Right
2005	GMC	Savana 2500	Base	4.3V6	GAS	Upstream Right	B2S1; OE Equivalent Design
2005	GMC	Savana 2500	Base	4.3V6	GAS	Downstream Right
2005	GMC	Savana 2500	Base	5.3V8	GAS	Upstream Right	B2S1; OE Equivalent Design
2005	GMC	Savana 3500	Base	6.0V8	GAS	Upstream Right	B2S1; OE Equivalent Design
2005	GMC	Savana 3500	SLE	6.0V8	CNG	Upstream Right	B2S1; OE Equivalent Design
2005	GMC	Savana 3500	SLE	4.8V8	GAS	Upstream Right	B2S1; OE Equivalent Design
2005	GMC	Savana 3500	Base	6.0V8	CNG	Downstream Right
2005	GMC	Savana 3500	SLE	6.0V8	GAS	Downstream Right
2005	GMC	Savana 3500	SLE	6.0V8	GAS	Upstream Right	B2S1; OE Equivalent Design
2005	GMC	Savana 3500	Base	6.0V8	CNG	Upstream Right	B2S1; OE Equivalent Design
2005	GMC	Savana 3500	SLE	4.8V8	GAS	Downstream Right
2005	GMC	Savana 3500	SLE	6.0V8	CNG	Downstream Right
2005	GMC	Savana 3500	Base	4.8V8	GAS	Upstream Right	B2S1; OE Equivalent Design
2005	GMC	Savana 3500	Base	6.0V8	GAS	Downstream Right
2005	GMC	Savana 3500	Base	4.8V8	GAS	Downstream Right
2004	Chevrolet	Astro	Base	4.3V6	GAS	Upstream Left	B1S1; OE Equivalent Design
2004	Chevrolet	Astro	LT	4.3V6	GAS	Upstream Left	B1S1; OE Equivalent Design
2004	Chevrolet	Astro	LS	4.3V6	GAS	Upstream Left	B1S1; OE Equivalent Design
2004	Chevrolet	Express 1500	Base	4.3V6	GAS	Downstream Right
2004	Chevrolet	Express 1500	Base	5.3V8	GAS	Upstream Right	B2S1; OE Equivalent Design
2004	Chevrolet	Express 1500	LS	4.3V6	GAS	Downstream Right
2004	Chevrolet	Express 1500	LS	5.3V8	GAS	Downstream Right
2004	Chevrolet	Express 1500	Base	4.3V6	GAS	Upstream Right	B2S1; OE Equivalent Design
2004	Chevrolet	Express 1500	LS	5.3V8	GAS	Upstream Right	B2S1; OE Equivalent Design
2004	Chevrolet	Express 1500	LS	4.3V6	GAS	Upstream Right	B2S1; OE Equivalent Design
2004	Chevrolet	Express 1500	Base	5.3V8	GAS	Downstream Right
2004	Chevrolet	Express 2500	Base	6.0V8	GAS	Downstream Right
2004	Chevrolet	Express 2500	LS	6.0V8	GAS	Upstream Right	B2S1; OE Equivalent Design
2004	Chevrolet	Express 2500	Base	6.0V8	GAS	Upstream Right	B2S1; OE Equivalent Design
2004	Chevrolet	Express 2500	LS	6.0V8	GAS	Downstream Right
2004	Chevrolet	Express 2500	Base	6.0V8	CNG	Downstream Right
2004	Chevrolet	Express 2500	LS	6.0V8	CNG	Upstream Right	B2S1; OE Equivalent Design
2004	Chevrolet	Express 2500	LS	4.3V6	GAS	Downstream Right
2004	Chevrolet	Express 2500	Base	5.3V8	GAS	Upstream Right	B2S1; OE Equivalent Design
2004	Chevrolet	Express 2500	LS	5.3V8	GAS	Upstream Right	B2S1; OE Equivalent Design
2004	Chevrolet	Express 2500	Base	5.3V8	GAS	Downstream Right
2004	Chevrolet	Express 2500	LS	4.3V6	GAS	Upstream Right	B2S1; OE Equivalent Design
2004	Chevrolet	Express 2500	LS	4.8V8	GAS	Downstream Right
2004	Chevrolet	Express 2500	Base	4.8V8	GAS	Downstream Right
2004	Chevrolet	Express 2500	LS	5.3V8	GAS	Downstream Right
2004	Chevrolet	Express 2500	Base	4.3V6	GAS	Upstream Right	B2S1; OE Equivalent Design

Product info

The NTK Oxygen Sensor Part Number 21545 is an exceptional car part designed to boost the performance of your Buick, Chevrolet, GMC, or Isuzu. This sensor is an essential component of your vehicle’s emission control system as it analyzes the exhaust gas composition to determine the amount of fuel needed by the engine.

One of the most significant benefits of this NTK Oxygen Sensor is that it is highly accurate, which translates to optimal engine performance. Additionally, it is made from high-quality materials, making it durable and resistant to wear and tear.

The NTK Oxygen Sensor Part Number 21545 is also easy to install, thanks to its direct-fit design that ensures it fits perfectly into the vehicle’s exhaust system. This saves you time and money that would have been spent on professional installation.

Another notable feature of this oxygen sensor is that it helps improve fuel efficiency, which ultimately saves you money on fuel costs. Additionally, it ensures that your vehicle meets the required emissions standards, making it environmentally friendly.

The NTK Oxygen Sensor Part Number 21545 is compatible with various Buick, Chevrolet, GMC, and Isuzu models, ensuring that you get the right product for your vehicle. It is a great option for anyone looking to replace their old, worn-out oxygen sensor or upgrade their car’s performance.

Overall, the NTK Oxygen Sensor Part Number 21545 is a reliable and efficient solution for your vehicle’s oxygen sensor needs. Its high accuracy, durability, ease of installation, fuel efficiency improvement, and environmental friendliness make it an excellent investment for any car owner.

Specifications

California Proposition 65	WARNING/Precaución: Cancer and Reproductive Harm - Cáncer y daño al sistema reproductivo - www.P65Warnings.ca.gov
Mounting Type	Threaded
Sensor Type	Heated
Thread Diameter	18.000
Universal Or Specific Fit	Specific
Wire Quantity	4
Wiring Harness Length	17.7500

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

Newparts.com offers a thirty (30) day return for refund for all items purchased through Newparts.com. To qualify for return and refund, all items must be new and in their original manufacturers box. To initiate a return, please contact our customer service. This information is only a summary. Complete shipping and return policy information can be found in our web site policies.

Oxygen Sensor 21545 – NTK

Delivery Info

Returns Info

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