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 92

Bosch Premium Original Equipment-Type Oxygen Sensors 15741

Oxygen Sensors, Premium Original Equipment-Type, for Hyundai, for Nissan, Chevy, Chrysler, Fiat, Ford, Jeep, Saab, Subaru, Suzuki, Toyota, Volvo, Each

Part Number: BCH-15741

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Estimated Ship Date: Today

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 )

Estimated Ship Date: Today

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Estimated Ship Date: Today

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: Today

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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: Today

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Estimated Ship Date: Today

Denso Air/Fuel Ratio Sensors for 2010-2013 3 - 234-5042

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

Part Number: DNP-234-5042

Not Yet Reviewed

Estimated Ship Date: Aug 25, 2025 if ordered today

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Estimated Ship Date: Aug 25, 2025 if ordered today

Denso Air/Fuel Ratio Sensors for 2007-2012 CX-7 - 234-5012

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

Part Number: DNP-234-5012

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 2000-2002 626, 2007-2012 CX-7 - 234-4044

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

Part Number: DNP-234-4044

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

Delphi Oxygen Sensors for 2006-2007 5 - ES20389

Oxygen Sensor

Part Number: DFP-ES20389

Not Yet Reviewed

Estimated Ship Date: Aug 18, 2025 if ordered today

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Estimated Ship Date: Aug 18, 2025 if ordered today

Denso Air/Fuel Ratio Sensors for 2007-2009 3 - 234-5013

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

Part Number: DNP-234-5013

Not Yet Reviewed

Estimated Ship Date: Aug 25, 2025 if ordered today

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Estimated Ship Date: Aug 25, 2025 if ordered today

Denso Oxygen Sensors for 2006-2009 3 - 234-4392

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

Part Number: DNP-234-4392

Not Yet Reviewed

Estimated Ship Date: Aug 25, 2025 if ordered today

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Estimated Ship Date: Aug 25, 2025 if ordered today

Delphi Oxygen Sensors for 2011-2014 2, 2004-2009 3, 2006-2008 6 - ES20362

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

Part Number: DFP-ES20362

Not Yet Reviewed

Estimated Ship Date: Aug 18, 2025 if ordered today

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Estimated Ship Date: Aug 18, 2025 if ordered today

Denso Oxygen Sensors for 2008-2010 5 - 234-4118

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

Part Number: DNP-234-4118

Not Yet Reviewed

Estimated Ship Date: Aug 25, 2025 if ordered today

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Estimated Ship Date: Aug 25, 2025 if ordered today

Denso Air/Fuel Ratio Sensors for 2006-2008 6 - 234-9087

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

Part Number: DNP-234-9087

Not Yet Reviewed

Estimated Ship Date: Aug 25, 2025 if ordered today

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Estimated Ship Date: Aug 25, 2025 if ordered today

Denso Air/Fuel Ratio Sensors for 2005 6 - 234-9086

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

Part Number: DNP-234-9086

Not Yet Reviewed

Estimated Ship Date: Aug 25, 2025 if ordered today

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Estimated Ship Date: Aug 25, 2025 if ordered today

Denso Oxygen Sensors for 2007-2013 3 - 234-4391

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

Part Number: DNP-234-4391

Not Yet Reviewed

Estimated Ship Date: Aug 25, 2025 if ordered today

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Estimated Ship Date: Aug 25, 2025 if ordered today

Denso Oxygen Sensors for 2006-2008 6 - 234-4394

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

Part Number: DNP-234-4394

Not Yet Reviewed

Estimated Ship Date: Aug 25, 2025 if ordered today

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Estimated Ship Date: Aug 25, 2025 if ordered today

Denso Oxygen Sensors for 2004-2005 3, 2006-2007 5 - 234-4396

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

Part Number: DNP-234-4396

Not Yet Reviewed

Estimated Ship Date: Aug 25, 2025 if ordered today

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Estimated Ship Date: Aug 25, 2025 if ordered today

Denso Oxygen Sensors for 2004-2005 3, 2006-2007 5 - 234-4390

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

Part Number: DNP-234-4390

Not Yet Reviewed

Estimated Ship Date: Aug 25, 2025 if ordered today

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Estimated Ship Date: Aug 25, 2025 if ordered today

Denso Oxygen Sensors for 2006-2007 6 - 234-4395

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

Part Number: DNP-234-4395

Not Yet Reviewed

Estimated Ship Date: Aug 25, 2025 if ordered today

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Estimated Ship Date: Aug 25, 2025 if ordered today

Denso Air/Fuel Ratio Sensors for 2006-2008 6 - 234-5011

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

Part Number: DNP-234-5011

Not Yet Reviewed

Estimated Ship Date: Aug 25, 2025 if ordered today

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Estimated Ship Date: Aug 25, 2025 if ordered today

Denso Air/Fuel Ratio Sensors for 2006-2007 6 - 234-5014

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

Part Number: DNP-234-5014

Not Yet Reviewed

Estimated Ship Date: Aug 25, 2025 if ordered today

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Estimated Ship Date: Aug 25, 2025 if ordered today

Denso Oxygen Sensors for 2003-2005 6 - 234-4393

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

Part Number: DNP-234-4393

Not Yet Reviewed

Estimated Ship Date: Aug 25, 2025 if ordered today

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Estimated Ship Date: Aug 25, 2025 if ordered today

Denso Oxygen Sensors for 2003-2005 6 - 234-4399

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

Part Number: DNP-234-4399

Not Yet Reviewed

Estimated Ship Date: Aug 25, 2025 if ordered today

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Estimated Ship Date: Aug 25, 2025 if ordered today

Delphi Oxygen Sensors for 2003-2008 6, 2000-2002 626 - ES20375

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

Part Number: DFP-ES20375

Not Yet Reviewed

Estimated Ship Date: Aug 19, 2025 if ordered today

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Estimated Ship Date: Aug 19, 2025 if ordered today

Delphi Oxygen Sensors ES20123

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

Part Number: DFP-ES20123

Not Yet Reviewed

Estimated Ship Date: Aug 19, 2025 if ordered today

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Estimated Ship Date: Aug 19, 2025 if ordered today

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