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.

Individual Parts

Part Groups

Results 1 - 25 of 2000 +

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 )

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Summit Racing™ Oxygen Sensors SUM-196000

Oxygen Sensor, O2 Sensor, 5-Wire, 0-5 V, Thread In, LSU 4.2, Wideband, Universal, Each

Part Number: SUM-196000

5.0 out of 5 stars ( 1 )

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Holley Sniper EFI Oxygen Sensors 554-155

Oxygen Sensors, Holley EFI, Replacement, O2 Sensor, Bosch LSU Style, 3-wire, Thread-in, Wire Harness, for Sniper EFI or Terminator X Systems, Each

Part Number: HLY-554-155

4.46 out of 5 stars ( 50 )

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Bosch Premium Original Equipment-Type Oxygen Sensors 17025

Oxygen Sensor, OE Replacement, Each

Part Number: BCH-17025

4.88 out of 5 stars ( 40 )

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Holley EFI O2 Sensors 554-101

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

Part Number: HLY-554-101

3.21 out of 5 stars ( 19 )

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AEM Electronics Replacement Wideband UEGO Controller Air/Fuel Ratio Gauge Components 30-2004

Oxygen Sensor, Replacement, Wideband UEGO, Air/Fuel Ratio Gauge Component, 5-wire, Thread-in, 0-5 V, 23.00 in. Length, Each

Part Number: AVM-30-2004

4.0 out of 5 stars ( 23 )

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 )

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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 ( 5 )

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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

Not Yet Reviewed

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FuelTech WB-O2 Sensors 3022000965

Oxygen Sensor, Bosch WB-O2 Sensor, Each

Part Number: FCH-3022000965

Not Yet Reviewed

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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 )

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AEM Electronics Wideband UEGO Sensors 30-2001

Oxygen Sensor, Replacement Wideband, 5-Wire, 0-5 V, Universal, Each

Part Number: AVM-30-2001

4.62 out of 5 stars ( 21 )

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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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 )

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NTK Oxygen Sensors for 1992-2000 CIVIC - 24300

Oxygen Sensor, 5-Wire, 0-1 V, for use on Honda®, Each

Part Number: NGK-24300

5.0 out of 5 stars ( 1 )

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FAST 5-Wire Wideband Oxygen Sensors 170408

O2 Sensor, LSU4 Wideband, 5-Wire, Male 6-Pin Plug, 18mm, Each

Part Number: FST-170408

4.75 out of 5 stars ( 8 )

Estimated Ship Date: Tomorrow

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ACDelco GM Genuine Parts Oxygen Sensors 12583804

Oxygen Sensor, 4-wire, Thread-in, 0-1 V, Cadillac, Chevy, GMC, Each

Part Number: ADO-213-3866

4.33 out of 5 stars ( 6 )

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 for 2017-2018 SILVERADO 1500 - 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 234-4012

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 )

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ACDelco GM Genuine Parts Oxygen Sensors 12609457

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

Part Number: ADO-213-4229

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Tomorrow

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Denso Oxygen Sensors for 2005-2013 CORVETTE, 2006-2007 HHR - 234-4332

Oxygen Sensor, OE Style, Heated, Thread-In Mounting, Chevrolet, Each

Part Number: DNP-234-4332

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Tomorrow

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ACDelco GM Genuine Parts Oxygen Sensors for 2024 CAMARO - 12655677

Oxygen Sensor, Cadillac, Chevy, Each

Part Number: ADO-12655677

5.0 out of 5 stars ( 1 )

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Bosch Premium Original Equipment-Type Oxygen Sensors 17014

Oxygen Sensor, OE Replacement, Each

Part Number: BCH-17014

5.0 out of 5 stars ( 3 )

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ACDelco GM Genuine Parts Oxygen Sensors for 2000-2002 SILVERADO 1500, 1999-2000 SILVERADO 2500 - 19178961

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

Part Number: ADO-AFS138

5.0 out of 5 stars ( 2 )

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Denso Oxygen Sensors 234-4669

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

Part Number: DNP-234-4669

4.86 out of 5 stars ( 7 )

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