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 1555

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: Today

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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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Racepak Air/Fuel Sensors 810-SN-AFAMP

Sensor, Air/Fuel, Each

Part Number: RPK-810-SN-AFAMP

Not Yet Reviewed

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Innovate Air/Fuel Ratio Monitor Accessories 3737

Data Acquisition, Oxygen Sensor, Bosch LSU 4.2, UEGO, 0.0 to 5.0 V, Wideband, Each

Part Number: INN-37370

4.8 out of 5 stars ( 15 )

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Denso Air/Fuel Ratio Sensors 234-9135

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

Part Number: DNP-234-9135

Not Yet Reviewed

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Denso Air/Fuel Ratio Sensors 234-9051

Oxygen Sensor, OE Style, Heated, Thread-In Mounting, Lexus, Toyota, Each

Part Number: DNP-234-9051

4.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Denso Air/Fuel Ratio Sensors for 1999-2002 4RUNNER, 2000-2004 TACOMA - 234-9002

Oxygen Sensor, OE Style, Heated, Flange Mount, Toyota, Each

Part Number: DNP-234-9002

Not Yet Reviewed

Estimated Ship Date: Oct 14, 2025 if ordered today

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Estimated Ship Date: Oct 14, 2025 if ordered today

Denso Air/Fuel Ratio Sensors for 2002-2004 RSX, CR-V, 2001-2005 CIVIC - 234-9005

Oxygen Sensor, OE Style, Heated, Thread-In Mounting, for use on Acura®, Honda®, Each

Part Number: DNP-234-9005

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Denso Air/Fuel Ratio Sensors for 2008-2012 ACCORD, 2010-2011 CR-V, 2009-2014 TSX - 234-9091

Oxygen Sensor, OE Style, Heated, Thread-In Mounting, for use on Acura®, Honda®, Each

Part Number: DNP-234-9091

Not Yet Reviewed

Estimated Ship Date: Oct 16, 2025 if ordered today

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Estimated Ship Date: Oct 16, 2025 if ordered today

Denso Air/Fuel Ratio Sensors 234-5137

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

Part Number: DNP-234-5137

Not Yet Reviewed

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Denso Air/Fuel Ratio Sensors 234-9026

Oxygen Sensor, OE Style, Heated, Thread-In Mounting, Lexus, Toyota, Each

Part Number: DNP-234-9026

Not Yet Reviewed

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Denso Air/Fuel Ratio Sensors 234-9131

Oxygen Sensor, OE Style, Heated, Thread-In Mounting, for use on Acura®, Honda®, Each

Part Number: DNP-234-9131

Not Yet Reviewed

Estimated Ship Date: Oct 14, 2025 if ordered today

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Estimated Ship Date: Oct 14, 2025 if ordered today

Denso Air/Fuel Ratio Sensors 234-5003

Oxygen Sensor, OE Style, Heated, Thread-In Mounting, Cadillac, Subaru, Each

Part Number: DNP-234-5003

Not Yet Reviewed

Estimated Ship Date: Oct 14, 2025 if ordered today

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Estimated Ship Date: Oct 14, 2025 if ordered today

Denso Air/Fuel Ratio Sensors for 2006-2011 CIVIC - 234-9076

Oxygen Sensor, OE Style, Heated, Thread-In Mounting, for use on Acura®, Honda®, Each

Part Number: DNP-234-9076

Not Yet Reviewed

Estimated Ship Date: Oct 14, 2025 if ordered today

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Estimated Ship Date: Oct 14, 2025 if ordered today

Denso Air/Fuel Ratio Sensors 234-5097

Oxygen Sensor, OE Style, Heated, Thread-In Mounting, Ford, Lincoln, Mercury, Each

Part Number: DNP-234-5097

Not Yet Reviewed

Estimated Ship Date: Oct 14, 2025 if ordered today

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Estimated Ship Date: Oct 14, 2025 if ordered today

Denso Air/Fuel Ratio Sensors 234-5010

Oxygen Sensor, OE Style, Heated, Thread-In Mounting, for use on Acura®, Honda®, Saturn, Each

Part Number: DNP-234-5010

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Denso Air/Fuel Ratio Sensors for 2000-2004 TUNDRA, TACOMA, 2000 4RUNNER - 234-9001

Oxygen Sensor, OE Style, Heated, Flange Mount, Toyota, Each

Part Number: DNP-234-9001

5.0 out of 5 stars ( 7 )

Estimated Ship Date: Today

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Denso Air/Fuel Ratio Sensors 234-9022

Oxygen Sensor, OE Style, Heated, Thread-In Mounting, Lexus, Toyota, Each

Part Number: DNP-234-9022

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Oct 14, 2025 if ordered today

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Estimated Ship Date: Oct 14, 2025 if ordered today

Denso Air/Fuel Ratio Sensors for 2004-2008 TSX - 234-9066

Oxygen Sensor, OE Style, Heated, Thread-In Mounting, for use on Acura®, Each

Part Number: DNP-234-9066

Not Yet Reviewed

Estimated Ship Date: Oct 15, 2025 if ordered today

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Estimated Ship Date: Oct 15, 2025 if ordered today

Denso Air/Fuel Ratio Sensors 234-9138

Oxygen Sensor, OE Style, Heated, Thread-In Mounting, Subaru, Volkswagen, Each

Part Number: DNP-234-9138

Not Yet Reviewed

Estimated Ship Date: Oct 16, 2025 if ordered today

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Estimated Ship Date: Oct 16, 2025 if ordered today

Denso Air/Fuel Ratio Sensors 234-9038

Oxygen Sensor, OE Style, Heated, Thread-In Mounting, for Infiniti, for Nissan, Suzuki, Each

Part Number: DNP-234-9038

Not Yet Reviewed

Estimated Ship Date: Oct 16, 2025 if ordered today

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Estimated Ship Date: Oct 16, 2025 if ordered today

Denso Air/Fuel Ratio Sensors 234-5060

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

Part Number: DNP-234-5060

Not Yet Reviewed

Estimated Ship Date: Oct 16, 2025 if ordered today

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Estimated Ship Date: Oct 16, 2025 if ordered today

Denso Air/Fuel Ratio Sensors 234-5113

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

Part Number: DNP-234-5113

Not Yet Reviewed

Estimated Ship Date: Oct 16, 2025 if ordered today

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Estimated Ship Date: Oct 16, 2025 if ordered today

Denso Air/Fuel Ratio Sensors 234-5175

Oxygen Sensor, OE Style, Heated, Thread-In Mounting, Ford, Lincoln, Each

Part Number: DNP-234-5175

Not Yet Reviewed

Estimated Ship Date: Oct 16, 2025 if ordered today

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Estimated Ship Date: Oct 16, 2025 if ordered today

Denso Air/Fuel Ratio Sensors for 2005-2006 CR-V, RSX, 2003-2009 ELEMENT - 234-9064

Oxygen Sensor, OE Style, Heated, Thread-In Mounting, for use on Acura®, Honda®, Each

Part Number: DNP-234-9064

Not Yet Reviewed

Estimated Ship Date: Today

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