O2 Sensors, Oxygen Sensors - Narrowband, Wideband, Upstream, Downstream, Denso, O2 Sensors

The oxygen sensor, or O2 sensor, measures the amount of oxygen in your vehicle’s exhaust gases. Your engine’s computer uses this data to help figure out...

The oxygen sensor, or O2 sensor, measures the amount of oxygen in your vehicle’s exhaust gases. Your engine’s computer uses this data to help figure out the current air/fuel ratio, which allows it to maintain fuel efficiency and emissions standards. If your ride starts running rough, you may need to clean or replace this important sensor. Fortunately, you’re at the right place to get the replacement oxygen sensor you need—Summit Racing Equipment!

Narrowband vs. Wideband

A narrowband O2 sensor only informs the computer if your engine is running rich or lean. A wideband sensor measures how rich or...

Narrowband vs. Wideband

A narrowband O2 sensor only informs the computer if your engine is running rich or lean. A wideband sensor measures how rich or how lean the ratio is.

Upstream vs. Downstream

Upstream O2 sensors are positioned before the catalytic converter; downstream sensors are after it.

Top Brands

Oxygen (O2) sensors are crucial to your fuel-injected car, so Summit only carries reliable brands, including, Bosch, NTK, ACDelco, Denso, Holley, and E3 Spark Plugs.

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Results 1 - 25 of 81

ACDelco GM Genuine Parts Oxygen Sensors 12661898

Oxygen Sensor, GM OE, Thread-In, Buick, Chevy, GMC, Each

Part Number: ADO-12661898

Not Yet Reviewed

Estimated Ship Date: Monday 4/20/2026 if shipped by air

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Estimated Ship Date: Monday 4/20/2026 if shipped by air

ACDelco GM Genuine Parts Oxygen Sensors 12643707

Oxygen Sensor, Chevy, GMC, Each

Part Number: ADO-12643707

Not Yet Reviewed

Estimated Ship Date: Monday 4/20/2026 if shipped by air

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Estimated Ship Date: Monday 4/20/2026 if shipped by air

Denso Oxygen Sensors 234-8085

DENSO Oxygen Sensor

Part Number: DNP-234-8085

Not Yet Reviewed

Estimated Ship Date: May 11, 2026 if ordered today

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Estimated Ship Date: May 11, 2026 if ordered today

Denso Oxygen Sensors 234-8080

OXYGEN SENSOR

Part Number: DNP-234-8080

Not Yet Reviewed

Estimated Ship Date: May 11, 2026 if ordered today

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Estimated Ship Date: May 11, 2026 if ordered today

Denso Oxygen Sensors 234-4566

Oxygen Sensor, OE Style, Heated, Thread-In Mounting, Buick, Cadillac, Chevrolet, GMC, Pontiac, Suzuki, Each

Part Number: DNP-234-4566

Not Yet Reviewed

Estimated Ship Date: May 12, 2026 if ordered today

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Estimated Ship Date: May 12, 2026 if ordered today

Denso Oxygen Sensors 234-4966

Oxygen Sensor, OE Style, Heated, Thread-In Mounting, Ford, Lincoln, Each

Part Number: DNP-234-4966

Not Yet Reviewed

Estimated Ship Date: May 11, 2026 if ordered today

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Estimated Ship Date: May 11, 2026 if ordered today

Denso Oxygen Sensors 234-4578

Oxygen Sensor, OE Style, Heated, Thread-In Mounting, Ford, Lincoln, Each

Part Number: DNP-234-4578

Not Yet Reviewed

Estimated Ship Date: May 12, 2026 if ordered today

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Estimated Ship Date: May 12, 2026 if ordered today

Denso Oxygen Sensors 234-8039

Oxygen Sensor, OE Style, Heated, Thread-In Mounting, Ford, Lincoln, Each

Part Number: DNP-234-8039

Not Yet Reviewed

Estimated Ship Date: May 11, 2026 if ordered today

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Estimated Ship Date: May 11, 2026 if ordered today

Denso Oxygen Sensors 234-4896

Oxygen Sensor, OE Style, Heated, Thread-In Mounting, Mercedes-Benz, Each

Part Number: DNP-234-4896

Not Yet Reviewed

Estimated Ship Date: May 11, 2026 if ordered today

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Estimated Ship Date: May 11, 2026 if ordered today

Denso Oxygen Sensors 234-4210

Oxygen Sensor, Universal, Heated, Thread-In Mounting, Each

Part Number: DNP-234-4210

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 4/20/2026 if shipped by air

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Estimated Ship Date: Monday 4/20/2026 if shipped by air

Delphi Oxygen Sensors ES20017

Oxygen Sensor, 4-wire, Thread-in, Chrysler, Dodge, Plymouth, Eagle, Jeep, Each

Part Number: DFP-ES20017

Not Yet Reviewed

Estimated Ship Date: May 4, 2026 if ordered today

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Estimated Ship Date: May 4, 2026 if ordered today

Denso Oxygen Sensors 234-4881

Oxygen Sensor, OE Style, Heated, Thread-In Mounting, Chrysler, Dodge, Jeep, Mercedes-Benz, Smart, Volkswagen, Each

Part Number: DNP-234-4881

Not Yet Reviewed

Estimated Ship Date: May 11, 2026 if ordered today

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Estimated Ship Date: May 11, 2026 if ordered today

Denso Oxygen Sensors 234-4004

Oxygen Sensor, OE Style, Heated, Thread-In Mounting, Chrysler, Dodge, Eagle, Jeep, Plymouth, Each

Part Number: DNP-234-4004

Not Yet Reviewed

Estimated Ship Date: May 12, 2026 if ordered today

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Estimated Ship Date: May 12, 2026 if ordered today

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NTK Oxygen Sensors 23023

4.75 out of 5 stars ( 4 )

Estimated Ship Date: Monday 4/20/2026

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Delphi Oxygen Sensors ES20181

Oxygen Sensor, 4-wire, Thread-in, Chrysler, Dodge, Jeep, Each

Part Number: DFP-ES20181

4.0 out of 5 stars ( 1 )

Estimated Ship Date: May 5, 2026 if ordered today

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Estimated Ship Date: May 5, 2026 if ordered today

Denso Oxygen Sensors 234-4209

Oxygen Sensor, Universal, Heated, Thread-In Mounting, Each

Part Number: DNP-234-4209

3.6 out of 5 stars ( 5 )

Estimated Ship Date: Monday 4/20/2026 if shipped by air

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Estimated Ship Date: Monday 4/20/2026 if shipped by air

Denso Oxygen Sensors 234-4039

Oxygen Sensor, OE Style, Heated, Thread-In Mounting, Ford, Mazda, Each

Part Number: DNP-234-4039

Not Yet Reviewed

Estimated Ship Date: May 12, 2026 if ordered today

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Estimated Ship Date: May 12, 2026 if ordered today

Denso Oxygen Sensors 234-4068

Oxygen Sensor, OE Style, Heated, Thread-In Mounting, Ford, Mazda, Each

Part Number: DNP-234-4068

Not Yet Reviewed

Estimated Ship Date: May 12, 2026 if ordered today

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Estimated Ship Date: May 12, 2026 if ordered today

NTK Oxygen Sensors 23179

Oxygen Sensor, 4-wire, Thread-in, Chrysler, Dodge, Eagle, Jeep, Plymouth, Each

Part Number: NGK-23179

3.5 out of 5 stars ( 2 )

Estimated Ship Date: Monday 4/20/2026 if shipped by air

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Estimated Ship Date: Monday 4/20/2026 if shipped by air

Denso Oxygen Sensors 234-4012

Oxygen Sensor, OE Style, Heated, Thread-In Mounting, for use on Acura®, Buick, Cadillac, Chevrolet, Daewoo, GMC, Honda®, Oldsmobile, Pontiac, Each

Part Number: DNP-234-4012

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 4/20/2026 if shipped by air

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Estimated Ship Date: Monday 4/20/2026 if shipped by air

Denso Oxygen Sensors 234-4018

Oxygen Sensor, OE Style, Heated, Thread-In Mounting, Buick, Cadillac, Chevrolet, GMC, Oldsmobile, Pontiac, Each

Part Number: DNP-234-4018

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Monday 4/20/2026 if shipped by air

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Estimated Ship Date: Monday 4/20/2026 if shipped by air

NTK Oxygen Sensors 24348

Oxygen Sensor, 5-wire, Thread-in, for Hyundai, for Kia, Audi, Ford, Jaguar, Land Rover, Lincoln, Mazda, Mercury, Porsche, Volkswagen, Each

Part Number: NGK-24348

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 4/20/2026 if shipped by air

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Estimated Ship Date: Monday 4/20/2026 if shipped by air

Denso Oxygen Sensors 234-4835

Oxygen Sensor, OE Style, Heated, Thread-In Mounting, for Infiniti, for Nissan, Each

Part Number: DNP-234-4835

Not Yet Reviewed

Estimated Ship Date: May 11, 2026 if ordered today

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Estimated Ship Date: May 11, 2026 if ordered today

Denso Oxygen Sensors 234-4490

Oxygen Sensor, OE Style, Heated, Thread-In Mounting, Ford, Lincoln, Mercury, Each

Part Number: DNP-234-4490

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 4/20/2026 if shipped by air

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Estimated Ship Date: Monday 4/20/2026 if shipped by air

Denso Oxygen Sensors 234-4127

Oxygen Sensor, OE Style, Heated, Thread-In Mounting, Ford, Lincoln, Mazda, Mercury, Each

Part Number: DNP-234-4127

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 4/20/2026 if shipped by air

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Estimated Ship Date: Monday 4/20/2026 if shipped by air

Denso Oxygen Sensors 234-4087

Oxygen Sensor, OE Style, Heated, Thread-In Mounting, Buick, Chevrolet, GMC, Isuzu, Oldsmobile, Pontiac, Each

Part Number: DNP-234-4087

4.67 out of 5 stars ( 3 )

Estimated Ship Date: Monday 4/20/2026 if shipped by air

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Estimated Ship Date: Monday 4/20/2026 if shipped by air

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