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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Bosch Premium Universal Type Oxygen Sensors 11027

Oxygen Sensor, Universal Replacement, Each

Part Number: BCH-11027

5.0 out of 5 stars ( 3 )

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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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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 )

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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 )

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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 )

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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 )

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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 )

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Daytona Twin Tec Wideband Exhaust Gas Oxygen Sensors 115001

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

Part Number: DTT-115001

5.0 out of 5 stars ( 1 )

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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 )

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Haltech Wideband Oxygen Sensors HT-010714

Oxygen Sensor, O2 Sensor, Thread In, LSU 4.2, Wideband, Universal, Each

Part Number: HTH-HT-010714

Not Yet Reviewed

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Denso Oxygen Sensors 234-4206

Oxygen Sensor, Universal, Heated, Flange Mount, Lexus, Toyota, Each

Part Number: DNP-234-4206

Not Yet Reviewed

Estimated Ship Date: May 14, 2026 if ordered today

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Estimated Ship Date: May 14, 2026 if ordered today

Summit Racing™ Oxygen Sensors SUM-196002

Summit Racing™ Oxygen Sensors SUM-196002

Oxygen Sensor, O2 Sensor, 5-Wire, 0-5 V, Thread In, 3 Flat Male Plug, LSU 4, Wideband, Universal, Each

Part Number: SUM-196002

Not Yet Reviewed

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Summit Racing™ Replacement Oxygen Sensors SUM-G2989

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

Part Number: SUM-G2989

3.0 out of 5 stars ( 2 )

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Denso Oxygen Sensors 234-4000

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

Part Number: DNP-234-4000

Not Yet Reviewed

Estimated Ship Date: May 14, 2026 if ordered today

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Estimated Ship Date: May 14, 2026 if ordered today

Denso Oxygen Sensors 234-3090

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

Part Number: DNP-234-3090

Not Yet Reviewed

Estimated Ship Date: May 14, 2026 if ordered today

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Estimated Ship Date: May 14, 2026 if ordered today

Denso Oxygen Sensors 234-3000

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

Part Number: DNP-234-3000

Not Yet Reviewed

Estimated Ship Date: May 15, 2026 if ordered today

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Estimated Ship Date: May 15, 2026 if ordered today

Denso Oxygen Sensors 234-4201

Oxygen Sensor, Universal, Heated, Thread-In Mounting, Audi, BMW, Cadillac, for Hyundai, Kia, LandRover, Mercedes-Benz, Porsche, Saab, Volkswagen, Each

Part Number: DNP-234-4201

Not Yet Reviewed

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