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 1569

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

4.56 out of 5 stars ( 62 )

Estimated Ship Date: Tomorrow

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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

4.71 out of 5 stars ( 17 )

Estimated Ship Date: Tomorrow

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ACDelco GM Genuine Parts Oxygen Sensors 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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AEM Electronics Wideband UEGO Sensors 30-2001

Oxygen Sensor, Wideband UEGO, 5-Wire, 0-5 V, Thread-in, with Wiring Harness, LSU 4.2 Replacement, for AEM Wideband UEGO Controller or Gauge, Each

Part Number: AVM-30-2001

4.62 out of 5 stars ( 21 )

Estimated Ship Date: Tomorrow

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ACDelco GM Genuine Parts Oxygen Sensors 12572706

Oxygen Sensor, 4-wire, Thread-in, Wiring Harness, Workhorse, Each

Part Number: ADO-12572706

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Tomorrow

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Haltech Wideband Hardware Packs HT-010746

Oxygen Sensor, Wideband Hardware Pack, Bolt-in, Includes Bosch LSU 4.9 Sensor, HT-010726 Adaptor Harness, Bung, Kit

Part Number: HTH-HT-010746

Not Yet Reviewed

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FAST 5-Wire Wideband Oxygen Sensors 301422

Oxygen Sensor, 5-wire, Wideband, LHA-Type, Thread-in, Wiring Harness, Designed for F.A.S.T. XFI Systems, Each

Part Number: FST-301422

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Tomorrow

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Holley Commander 950 Wideband Replacement O2 Sensors 534-198

Sensors, Replacement, O2 Sensor, Bosch, Wideband, 4-Wire, 0-1V Range, Thread-in Style, 4 Flat Female Harness, for Commander 950, Each

Part Number: HLY-534-198

Not Yet Reviewed

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MSD Power Grid Wide Band Oxygen Sensors 2273

Oxygen Sensor, Power Grid Wide Band, Sensor 2, 7 Wire, Includes 18 in. Extension Harness, Weld-In Bung, Use with 7766 Wide Band Module, Kit

Part Number: MSD-2273

Not Yet Reviewed

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Caspers Electronics Heated Oxygen Sensor Retrofit Kits 103025

Caspers Electronics Heated Oxygen Sensor Retrofit Kits 103025

Oxygen Sensor, Heated, 1-Wire, 0-1 V, Each

Part Number: CEI-103025

4.88 out of 5 stars ( 16 )

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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Bosch Premium Universal Type Oxygen Sensors 11027

Oxygen Sensor, Universal Replacement, Each

Part Number: BCH-11027

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Tomorrow

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Bosch Premium Universal Type Oxygen Sensors 15733

Oxygen Sensor, Universal Replacement, OE SmartLink™, Each

Part Number: BCH-15733

3.67 out of 5 stars ( 3 )

Estimated Ship Date: Tomorrow

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Bosch Premium Universal Type Oxygen Sensors 15730

Oxygen Sensor, Universal Replacement, OE SmartLink™, Each

Part Number: BCH-15730

2.2 out of 5 stars ( 5 )

Estimated Ship Date: Tomorrow

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MSD Power Grid Dual NTK Wideband O2 Modules 7766

Power Grid O2 Module, Wideband Oxygen Sensor, MSD Power Grid, NTK, Each

Part Number: MSD-7766

1.0 out of 5 stars ( 1 )

Estimated Ship Date: Tomorrow

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Spectra Premium Oxygen Sensors OS5434

OXYGEN SENSOR

Part Number: SGT-OS5434

Not Yet Reviewed

Estimated Ship Date: Jan 4, 2027 if ordered today

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Estimated Ship Date: Jan 4, 2027 if ordered today

Spectra Premium Oxygen Sensors OS5038

Oxygen Sensor, 4-wire, Thread-in, 4 Round Male Plug Style, Ford, Jaguar, Lincoln, Mazda, Mercury, Each

Part Number: SGT-OS5038

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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Spectra Premium Oxygen Sensors for 2012-2013 MAZDA 3 - OS6090

Oxygen Sensor, Mazda, Each

Part Number: SGT-OS6090

Not Yet Reviewed

Estimated Ship Date: Jan 5, 2027 if ordered today

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Estimated Ship Date: Jan 5, 2027 if ordered today

Spectra Premium Oxygen Sensors OS5058

Oxygen Sensor, 4-wire, Thread-in, 4 Square Male Plug Style, Cadillac, Chevrolet, GMC, Hummer, Isuzu, Oldsmobile, Each

Part Number: SGT-OS5058

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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Spectra Premium Oxygen Sensors for 2001 INSIGHT - OS5271

OXYGEN SENSOR

Part Number: SGT-OS5271

Not Yet Reviewed

Estimated Ship Date: Jan 4, 2027 if ordered today

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Estimated Ship Date: Jan 4, 2027 if ordered today

Caspers Electronics Heated Oxygen Sensor Retrofit Kits for 1986-1987 REGAL - 102042

Heated Oxygen Sensor, 4-Wire, Retrofit, Buick, Kit

Part Number: CEI-102042

2.0 out of 5 stars ( 1 )

Estimated Ship Date: Nov 25, 2026 if ordered today

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Estimated Ship Date: Nov 25, 2026 if ordered today

Spectra Premium Oxygen Sensors for 2002-2004 RSX - OS5104

OXYGEN SENSOR

Part Number: SGT-OS5104

Not Yet Reviewed

Estimated Ship Date: Jan 5, 2027 if ordered today

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Estimated Ship Date: Jan 5, 2027 if ordered today

AutoMeter Narrowband Oxygen Sensors 2244

Sending Unit, Oxygen Sensor, Air/Fuel Ratio, Each

Part Number: ATM-2244

5.0 out of 5 stars ( 2 )

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 ( 7 )

Estimated Ship Date: Tomorrow

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Delphi Oxygen Sensors ES10921

Oxygen Sensor, 5-wire, Thread-in, Audi, BMW, Mercedes-Benz, Porsche, Volkswagen, Each

Part Number: DFP-ES10921

Not Yet Reviewed

Estimated Ship Date: Dec 29, 2026 if ordered today

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Estimated Ship Date: Dec 29, 2026 if ordered today

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