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 1330

Chevrolet Performance Oxygen Sensors 12592592

Oxygen Sensor, Replacement, OEM Style, Front, Thread-In Type, 4-Wire Weatherpack Connector, Chevy, GMC, Hummer, 2.8L, 2.9L, 3.5L, 3.7L, Each

Part Number: NAL-12592592

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Chevrolet Performance Oxygen Sensors 19178918

SENSOR

Part Number: NAL-19178918

Not Yet Reviewed

Estimated Ship Date: Mar 23, 2026 if ordered today

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Estimated Ship Date: Mar 23, 2026 if ordered today

Chevrolet Performance Oxygen Sensors 19209808

SENSOR ASM, HTD OXY (POSN 3)

Part Number: NAL-19209808

Not Yet Reviewed

Estimated Ship Date: Mar 24, 2026 if ordered today

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Estimated Ship Date: Mar 24, 2026 if ordered today

Chevrolet Performance Oxygen Sensors 12572705

SENSOR

Part Number: NAL-12572705

Not Yet Reviewed

Estimated Ship Date: Mar 24, 2026 if ordered today

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Estimated Ship Date: Mar 24, 2026 if ordered today

Chevrolet Performance Oxygen Sensors 12609457

SENSOR

Part Number: NAL-12609457

Not Yet Reviewed

Estimated Ship Date: Mar 24, 2026 if ordered today

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Estimated Ship Date: Mar 24, 2026 if ordered today

Chevrolet Performance - Oxygen Sensors for 2003-2005 SILVERADO 1500, TAHOE - 12587785

SENSOR

Part Number: NAL-12587785

Not Yet Reviewed

Estimated Ship Date: Mar 24, 2026 if ordered today

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Estimated Ship Date: Mar 24, 2026 if ordered today

Chevrolet Performance - Oxygen Sensors for 2014-2017 CAPRICE - 12617332

SENSOR

Part Number: NAL-12617332

Not Yet Reviewed

Estimated Ship Date: Mar 24, 2026 if ordered today

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Estimated Ship Date: Mar 24, 2026 if ordered today

Chevrolet Performance Oxygen Sensors 19355306

SENSOR

Part Number: NAL-19355306

Not Yet Reviewed

Estimated Ship Date: Mar 24, 2026 if ordered today

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Estimated Ship Date: Mar 24, 2026 if ordered today

Holley EFI O2 Sensors 554-100

Oxygen Sensors, Holley EFI, NTK, Wideband, 18mm x 1.5 Thread, 7 Wire Connection, 0-1 V, Wire Harness, 8-pin, Rectangular Plug, Each

Part Number: HLY-554-100

4.81 out of 5 stars ( 16 )

Estimated Ship Date: Tomorrow

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Holley EFI O2 Sensors 554-101

Oxygen Sensor, Bosch LSU4, Wideband, Thread-in, 7-Wire, 14 in. Long 8-pin, Rectangular Plug, Each

Part Number: HLY-554-101

3.21 out of 5 stars ( 19 )

Estimated Ship Date: Tomorrow

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Racepak AF1 Single Channel Air Fuel Sensor Packages 220-VM-AF1

Data Acquisition, Racepak, AF1 Single Channel Wideband Controller, Kit

Part Number: RPK-220-VM-AF1

Not Yet Reviewed

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Innovate Oxygen Sensors 3888

Oxygen Sensor, Data Acquisition Component, Each

Part Number: INN-38880

4.2 out of 5 stars ( 20 )

Estimated Ship Date: Tomorrow

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FiTech Oxygen Sensors 60017

Oxygen Sensors, 6-wire, Thread-in, 6 Rectangle Female Plug Style, Replacement Oxygen Sensor for FiTech EFI Systems, Each

Part Number: FIF-60017

5.0 out of 5 stars ( 6 )

Estimated Ship Date: Tomorrow

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ACDelco GM Genuine Parts Oxygen Sensors for 2005-2013 CORVETTE - 12581966

Oxygen Sensor, Thread-in, 18mm x 1.5, Chevy, Upstream, Each

Part Number: ADO-213-1694

5.0 out of 5 stars ( 8 )

Estimated Ship Date: Tomorrow

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Denso Oxygen Sensors 234-4337

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

Part Number: DNP-234-4337

4.0 out of 5 stars ( 4 )

Estimated Ship Date: Tomorrow

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ACDelco GM Genuine Parts Oxygen Sensors for 2016-2024 CAMARO, 2015-2019 CORVETTE, 2016-2019 CTS - 12655677

Oxygen Sensor, Cadillac, Chevy, Each

Part Number: ADO-12655677

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Tomorrow

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ACDelco GM Genuine Parts Oxygen Sensors 12659516

Oxygen Sensor, 4-Wire, 0-1 V, Heated, Cadillac, Chevy, GMC, Each

Part Number: ADO-12659516

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Tomorrow

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Denso Oxygen Sensors 234-4668

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

Part Number: DNP-234-4668

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Tomorrow

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ACDelco GM Genuine Parts Oxygen Sensors 12657188

Oxygen Sensor, 4-wire, Cadillac, Chevy, GMC, Each

Part Number: ADO-12657188

5.0 out of 5 stars ( 5 )

Estimated Ship Date: Tomorrow

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ACDelco GM Genuine Parts Oxygen Sensors 19178924

Oxygen Sensor, Thread-in, Buick, Chevy, GMC, Oldsmobile, Pontiac, Each

Part Number: ADO-AFS123

5.0 out of 5 stars ( 10 )

Estimated Ship Date: Tomorrow

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Haltech Wideband Oxygen Sensors HT-010718

Oxygen Sensor, O2 Sensor, Thread In, LSU 4.9, Wideband, Universal, Each

Part Number: HTH-HT-010718

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Tomorrow

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ACDelco GM Genuine Parts Oxygen Sensors 12617332

Oxygen Sensor, 4-wire, Thread-in, Chevy, Each

Part Number: ADO-213-4408

4.67 out of 5 stars ( 3 )

Estimated Ship Date: Tomorrow

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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: Tomorrow

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ACDelco GM Genuine Parts Oxygen Sensors for 1998-2002 CAMARO, FIREBIRD - 19355308

Oxygen Sensor, 4-wire, Thread-in, Wiring Harness, Cadillac, Chevy, Pontiac, Each

Part Number: ADO-AFS98

4.75 out of 5 stars ( 4 )

Estimated Ship Date: Tomorrow

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ACDelco GM Genuine Parts Oxygen Sensors 19178961

Oxygen Sensor, 4-wire, Cadillac, Chevy, GMC, Each

Part Number: ADO-AFS138

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Tomorrow

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