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 1461

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: Monday 4/27/2026 if shipped by air

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Estimated Ship Date: Monday 4/27/2026 if shipped by air

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

Estimated Ship Date: Monday 4/27/2026 if shipped by air

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Estimated Ship Date: Monday 4/27/2026 if shipped by air

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

4.81 out of 5 stars ( 16 )

Estimated Ship Date: Monday 4/27/2026 if shipped by air

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Estimated Ship Date: Monday 4/27/2026 if shipped by air

Racepak Air/Fuel Sensors 810-SN-AFAMP

Sensor, Air/Fuel, Each

Part Number: RPK-810-SN-AFAMP

Not Yet Reviewed

Estimated Ship Date: Monday 4/27/2026 if shipped by air

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Estimated Ship Date: Monday 4/27/2026 if shipped by air

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: Monday 4/27/2026 if shipped by air

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Estimated Ship Date: Monday 4/27/2026 if shipped by air

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: May 18, 2026 if ordered today

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Estimated Ship Date: May 18, 2026 if ordered today

Denso Air/Fuel Ratio Sensors for 2003-2007 ACCORD - 234-9040

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

Part Number: DNP-234-9040

Not Yet Reviewed

Estimated Ship Date: May 18, 2026 if ordered today

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Estimated Ship Date: May 18, 2026 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: May 18, 2026 if ordered today

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Estimated Ship Date: May 18, 2026 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: Monday 4/27/2026 if shipped by air

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Estimated Ship Date: Monday 4/27/2026 if shipped by air

Denso Air/Fuel Ratio Sensors 234-5098

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

Part Number: DNP-234-5098

Not Yet Reviewed

Estimated Ship Date: Monday 4/27/2026 if shipped by air

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Estimated Ship Date: Monday 4/27/2026 if shipped by air

Denso Air/Fuel Ratio Sensors 234-5065

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

Part Number: DNP-234-5065

Not Yet Reviewed

Estimated Ship Date: May 18, 2026 if ordered today

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Estimated Ship Date: May 18, 2026 if ordered today

Denso Air/Fuel Ratio Sensors 234-9042

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

Part Number: DNP-234-9042

Not Yet Reviewed

Estimated Ship Date: Monday 4/27/2026 if shipped by air

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Estimated Ship Date: Monday 4/27/2026 if shipped by air

Denso Air/Fuel Ratio Sensors 234-9123

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

Part Number: DNP-234-9123

Not Yet Reviewed

Estimated Ship Date: May 18, 2026 if ordered today

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Estimated Ship Date: May 18, 2026 if ordered today

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: May 18, 2026 if ordered today

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Estimated Ship Date: May 18, 2026 if ordered today

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: May 18, 2026 if ordered today

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Estimated Ship Date: May 18, 2026 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: May 18, 2026 if ordered today

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Estimated Ship Date: May 18, 2026 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: May 18, 2026 if ordered today

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Estimated Ship Date: May 18, 2026 if ordered today

Denso Air/Fuel Ratio Sensors 234-9009

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

Part Number: DNP-234-9009

5.0 out of 5 stars ( 2 )

Estimated Ship Date: May 18, 2026 if ordered today

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Estimated Ship Date: May 18, 2026 if ordered today

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

Estimated Ship Date: Monday 4/27/2026 if shipped by air

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Estimated Ship Date: Monday 4/27/2026 if shipped by air

Denso Air/Fuel Ratio Sensors 234-9007

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

Part Number: DNP-234-9007

Not Yet Reviewed

Estimated Ship Date: May 18, 2026 if ordered today

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Estimated Ship Date: May 18, 2026 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: May 18, 2026 if ordered today

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Estimated Ship Date: May 18, 2026 if ordered today

Denso Air/Fuel Ratio Sensors 234-9021

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

Part Number: DNP-234-9021

1.0 out of 5 stars ( 1 )

Estimated Ship Date: May 18, 2026 if ordered today

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Estimated Ship Date: May 18, 2026 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: May 18, 2026 if ordered today

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Estimated Ship Date: May 18, 2026 if ordered today

Denso Air/Fuel Ratio Sensors 234-5176

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

Part Number: DNP-234-5176

Not Yet Reviewed

Estimated Ship Date: May 18, 2026 if ordered today

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Estimated Ship Date: May 18, 2026 if ordered today

Denso Air/Fuel Ratio Sensors 234-5173

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

Part Number: DNP-234-5173

Not Yet Reviewed

Estimated Ship Date: Monday 4/27/2026 if shipped by air

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Estimated Ship Date: Monday 4/27/2026 if shipped by air

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