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 - 21 of 21

Delphi Oxygen Sensors ES10596

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

Part Number: DFP-ES10596

1.0 out of 5 stars ( 1 )

Estimated Ship Date: Aug 20, 2025 if ordered today

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Estimated Ship Date: Aug 20, 2025 if ordered today

Denso Oxygen Sensors 234-4586

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

Part Number: DNP-234-4586

Not Yet Reviewed

Estimated Ship Date: Aug 26, 2025 if ordered today

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Estimated Ship Date: Aug 26, 2025 if ordered today

Denso Oxygen Sensors for 2013-2015 E400, 2012-2016 SLK55 AMG - 234-4796

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

Part Number: DNP-234-4796

Not Yet Reviewed

Estimated Ship Date: Aug 26, 2025 if ordered today

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Estimated Ship Date: Aug 26, 2025 if ordered today

Denso Air/Fuel Ratio Sensors 234-5158

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

Part Number: DNP-234-5158

Not Yet Reviewed

Estimated Ship Date: Aug 26, 2025 if ordered today

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Estimated Ship Date: Aug 26, 2025 if ordered today

Denso Air/Fuel Ratio Sensors 234-5085

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

Part Number: DNP-234-5085

Not Yet Reviewed

Estimated Ship Date: Aug 26, 2025 if ordered today

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Estimated Ship Date: Aug 26, 2025 if ordered today

Spectra Premium Oxygen Sensors OS5530

Oxygen Sensor, BMW, Mercedes-Benz, Smart, Each

Part Number: SGT-OS5530

Not Yet Reviewed

Estimated Ship Date: Aug 8, 2025 if ordered today

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Estimated Ship Date: Aug 8, 2025 if ordered today

Bosch Premium Original Equipment-Type Oxygen Sensors 17281

Oxygen Sensors, Premium Original Equipment-Type, Upstream, Mercedes-Benz, Each

Part Number: BCH-17281

Not Yet Reviewed

Estimated Ship Date: Sep 9, 2025 if ordered today

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Estimated Ship Date: Sep 9, 2025 if ordered today

ACDelco Gold Oxygen Sensors 19239906

Oxygen Sensor, Professional, Thread-In, BMW, Dodge, Mercedes-Benz, Each

Part Number: ADO-213-4638

Not Yet Reviewed

Estimated Ship Date: Sep 3, 2025 if ordered today

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Estimated Ship Date: Sep 3, 2025 if ordered today

Bosch Premium Original Equipment-Type Oxygen Sensors 17339

Oxygen Sensor, Premium, OE, Direct Fit, 5-Wire, Thread-in, 9.800 in., Mercedes-Benz, Each

Part Number: BCH-17339

Not Yet Reviewed

Estimated Ship Date: Sep 10, 2025 if ordered today

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Estimated Ship Date: Sep 10, 2025 if ordered today

Bosch Premium Original Equipment-Type Oxygen Sensors 17347

Oxygen Sensor, Premium, OE, Direct Fit, 5-Wire, Thread-in, 16.500 in., Mercedes-Benz, Each

Part Number: BCH-17347

Not Yet Reviewed

Estimated Ship Date: Sep 10, 2025 if ordered today

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Estimated Ship Date: Sep 10, 2025 if ordered today

Bosch Premium Original Equipment-Type Oxygen Sensors 17354

Oxygen Sensor, Premium, OE, Direct Fit, 5-Wire, Thread-in, 15.748 in., Mercedes-Benz, Smart, Each

Part Number: BCH-17354

Not Yet Reviewed

Estimated Ship Date: Sep 10, 2025 if ordered today

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Estimated Ship Date: Sep 10, 2025 if ordered today

Bosch Premium Original Equipment-Type Oxygen Sensors 17355

Oxygen Sensor, Premium, OE, Direct Fit, 5-Wire, Thread-in, 15.300 in., Mercedes-Benz, Each

Part Number: BCH-17355

Not Yet Reviewed

Estimated Ship Date: Sep 10, 2025 if ordered today

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Estimated Ship Date: Sep 10, 2025 if ordered today

NTK Oxygen Sensors 24330