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O2 Sensors, Oxygen Sensors  -  Narrowband, Wideband, Upstream, Downstream, Denso, O2 Sensors

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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...

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 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

Results 1 - 25 of 300

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 )

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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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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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O2 Sensor, LSU4 Wideband, 5-Wire, Male 6-Pin Plug, 18mm, Each

Part Number: FST-170408

4.78 out of 5 stars ( 9 )

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Gauge Sending Unit, Oxygen Sensor, Wideband, Electrical, M18 x 1.5, Universal, Each

Part Number: ATM-2243

4.59 out of 5 stars ( 17 )

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Oxygen Sensor, 5-wire, Wideband, LHA-Type, Thread-in, Wiring Harness, Designed for F.A.S.T. XFI Systems, Each

Part Number: FST-301422

5.0 out of 5 stars ( 1 )

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Sensors, Replacement, O2 Sensor, Bosch, Wideband, 4-Wire, 0-1V Range, Thread-in Style, 4 Flat Female Harness, for Commander 950, Each

Part Number: HLY-534-198

Not Yet Reviewed

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Gauge Sending Units, Replacement, Air/Fuel Ratio - Wideband Gauge Type, Electrical, M18 x 1.5 Thread, Fits Wide Band Pro Plus Oxygen Sensor Gauges,Kit

Part Number: ATM-5316

Not Yet Reviewed

Estimated Ship Date: Jan 21, 2026 if ordered today

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Estimated Ship Date: Jan 21, 2026 if ordered today

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 )

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

Part Number: SUM-196002

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Data Acquisition, Racepak, AF1 Single Channel Wideband Controller, Kit

Part Number: RPK-220-VM-AF1

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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: Jan 30, 2026 if ordered today

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Estimated Ship Date: Jan 30, 2026 if ordered today

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: Jan 30, 2026 if ordered today

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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: Jan 30, 2026 if ordered today

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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: Jan 30, 2026 if ordered today

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

Part Number: DNP-234-9118

Not Yet Reviewed

Estimated Ship Date: Jan 30, 2026 if ordered today

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

Part Number: DNP-234-9062

Not Yet Reviewed

Estimated Ship Date: Jan 30, 2026 if ordered today

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

Part Number: DNP-234-9119

Not Yet Reviewed

Estimated Ship Date: Jan 30, 2026 if ordered today

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

Part Number: DNP-234-9112

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Jan 30, 2026 if ordered today

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

Part Number: DNP-234-9301

Not Yet Reviewed

Estimated Ship Date: Jan 30, 2026 if ordered today

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Oxygen Sensor, Data Acquisition Component, Each

Part Number: INN-38880

4.2 out of 5 stars ( 20 )

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

Part Number: DNP-234-9051

4.0 out of 5 stars ( 1 )

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

Part Number: DNP-234-5113

Not Yet Reviewed

Estimated Ship Date: Jan 30, 2026 if ordered today

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

Part Number: DNP-234-9042

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