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

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.

Part Groups

Results 1 - 24 of 42

Holley EFI O2 Sensors

Holley EFI O2 sensors precisely manage air fuel ratios to keep your engine performing at its peak. Available in Bosch LSU4 and NTK wideband configurations, Holley EFI has the correct sensor for your high performance EFI application.

3.94 out of 5 stars ( 35 )

$199.95

$359.95

Holley Sniper EFI Oxygen Sensors

Holley Sniper EFI oxygen sensors are the best replacements for your system. When you need to service your Sniper EFI throttle body, Holley's list of parts include these O2 sensors to maintain a proper reading of oxygen levels in the exhaust. These replacement Bosch wideband sensors feature anti-seize pre-applied to sensor threads.

4.5 out of 5 stars ( 54 )

$160.95

Bosch Premium Original Equipment-Type Oxygen Sensors

Save the environment and gasoline dollars. Tune-up with Bosch premium original equipment-type oxygen sensors for lower emissions and greater fuel economy. Properly functioning oxygen sensors are important when it comes to your vehicle's fuel economy and reducing harmful exhaust emissions. That's why checking for and replacing a worn-out oxygen sensor with one of these Bosch sensors is an important part of every routine tune-up. These O2 sensors feature an OEM connector for ease of installation. Bosch invented the automotive oxygen sensor and is the top choice of carmakers around the world. Order the model designed for fitment with your vehicle.

4.76 out of 5 stars ( 174 )

$31.99

$348.99

AEM Electronics Replacement Wideband UEGO Controller Air/Fuel Ratio Gauge Components

AEM Electronics Wideband UEGO Controller Air/Fuel ratio gauge components are designed to be used with AEM wideband UEGO controller air/fuel ratio gauges. Whether you need to replace your sensor or cable, these parts will help you to get your gauge back in working order.

4.0 out of 5 stars ( 23 )

$145.95

Innovate Oxygen Sensors

Are you running rich or lean? Innovate oxygen sensors will monitor and tell you just what the facts are. These precision sensors collect and feed the data you need to aid in restoring accurate gauging your fuel mixture. They offer replacement Bosch LSU 4.2 and 4.9 sensors for their digital A/F ratio meter and digital wideband gauges. Plus, Innovate wideband systems allow the sensor to be recalibrated for the ultimate in accuracy, maximum performance, and safety!

4.36 out of 5 stars ( 25 )

$84.99

$109.99

Racepak AF1 Single Channel Air Fuel Sensor Packages

Racepak's AF1 single channel air fuel sensor packages are designed to be utilized with any of their V-net (canbus) Series of data loggers. They are suitable for use with gasoline or alcohol, with calibration values available for either fuel types. The power supply requirement of 12 to 16 V enables use with standard 12 or 16 V high performance batteries. Racepak AF1 single channel air fuel sensor packages include: * Heat- and water-resistant controller with integrated V-net module * Bosch LSU air/fuel sensor * Wiring harness * Installation instructions * Programmable 0 to 5 V analog output

Not Yet Reviewed

$499.95

ACDelco GM Genuine Parts Oxygen Sensors

ACDelco GM Genuine Parts oxygen (O2) sensors are special feedback sensors on your vehicle's exhaust system and are GM-recommended replacements for your vehicle's original components. They measure the proportion of oxygen in exhaust gases, then using the measurement, the engine control module (ECM) can adjust the air/fuel ratio to near the optimal value of 14.7:1. At this ratio, engine performance, emissions, and fuel economy are all optimized. GM Genuine Parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Choose the O2 sensor designed for your vehicle.

4.83 out of 5 stars ( 107 )

$22.99

$179.99

FiTech Oxygen Sensors

FiTech offers a variety of accessories and components for Go EFI Systems including oxygen sensors. These sensors are for replacing or upgrading existing parts and help to keep your vehicle running at top performance with long-term durability and reliability. Maintain fuel efficiency and emissions standards with the FiTech oxygen sensor best suited for your application.

5.0 out of 5 stars ( 5 )

$111.00

NTK Oxygen Sensors

NTK is the world's leading supplier of OEM oxygen sensors. They're individually tested to ensure the highest level of quality and reliability—designed to continuously detect the composition of exhaust gases. As the output from the sensors changes, the ECU instructs the fuel mixing system to alter the mixture. This ensures that the air/fuel mix is always correct and promotes efficiency. A new NTK oxygen sensor can help lower emissions, improve fuel mileage and engine efficiency, and extend catalyst life. These components meet or exceed OE specs and are equipped with waterproof, factory-fitted connectors to ensure a perfect fit every time. Order the model recommended for your vehicle.

4.81 out of 5 stars ( 80 )

$25.99

$236.99

AEM Electronics Wideband UEGO Sensors

These AEM Electronics wideband UEGO sensors are used in AEM single channel UEGO systems. They may also work with other wideband UEGO controllers. Features include: * Much more accurate AFR readings than OEM sensors * Response time of less than 100 milliseconds * Measure from 11:1 AFR to atmospheric air * Latest Nernst cell/oxygen pump hybrid technology * Planar-configured zirconium dioxide sensor * Integrated heater element warms up in less than 20 seconds * PTFE insulators withstand temperatures of up to 1,400 degrees Fahrenheit (800 degrees Celsius) * Low current draw

4.64 out of 5 stars ( 22 )

$111.95

$158.95

HalTech Wideband Oxygen Sensors

HalTech offers a variety of data acquisition components and accessories to facilitate engine management and automotive performance. These replacement wideband oxygen sensors are built to fit and function just like the originals. They're designed for use with a wideband controller or gauge. The 02 sensors are available in different models: * Model 010712: Modified NTK LZA08-H5 Suits NEXUS Series devices and used with NTK compatible wideband controllers to measure Lambda Notes: Genuine NTK sensor modified by HalTech to improve sensor longevity and accuracy at extremely rich air to fuel ratios by the addition of a thin walled spring steel radial shroud at the sensor tip. * Model 010714: Bosch LSU 4.2 Includes: Pre-terminated with female Deutsch DT-6 connector * Model 010718: Bosch LSU 4.9 Suits: Nexus ECU, Elite Pro Plugin ECU and WB1/WB2 Includes: Bosch LSU 4.9 sensor with factory calibration resistor connector (not a Deutsch DT-6 connector)

5.0 out of 5 stars ( 1 )

$130.00

$144.00

Denso Oxygen Sensors

Oxygen sensors, also known as Lambda sensors or O2 sensors, are among the most sensitive and critical components on your car's engine. They monitor the air/fuel mixture under idle, moderate acceleration, and cruise conditions. Oxygen sensors have a smaller range of limits in detecting and adjusting the difference from an optimum air/fuel ratio than the newer wide range air/fuel sensors (A/F sensors). Today's engines may use as many as four oxygen sensors to monitor exhaust gas oxygen content and catalytic converter efficiency. In order to perform these functions properly, Denso oxygen sensors adhere to strict OE standards within incredibly close tolerances. A malfunctioning or incorrectly calibrated oxygen sensor can hurt drivability and illuminate the check engine light, resulting in costly and time-consuming repairs. Denso First Time Fit oxygen sensors are designed to meet those tolerances and more. Key features and benefits of Denso Oxygen Sensors include: * Robotic laser welds * Porous PTFE filters block efficiency-robbing contaminants * Double-protection covers maintain proper temperature for quicker response times and protect ceramic elements from silicone and lead fouling * Rugged, watertight stainless steel housings resist corrosion and contamination * Aluminum oxide trap layers keep silicone and lead out, preventing damage to the platinum electrode * Refined zirconia elements improves sensor response * Superior design maximizes engine performance while reducing fuel consumption and harmful emissions * First Time Fit design delivers the right part the first time

4.62 out of 5 stars ( 102 )

$26.99

$547.99

AutoMeter Wideband Oxygen Sensors

Designed specifically for use with AutoMeter Wideband AFR gauges, these wideband exhaust oxygen sensors are intended for replacement of an existing sensor(s) being utilized by an AutoMeter wideband air/fuel ratio gauge. The sensors are fitted with a laser-etched calibration chip which prevents the need for free-air calibration when used with the AutoMeter gauges for which they are specifically designed. Each sensor is factory-calibrated by Bosch for accuracy within 0.1 AFR.

4.56 out of 5 stars ( 16 )

$150.99

$225.99

FuelTech WB-O2 Sensors

Designed for use with their WB-O2 Nano, Alcohol O2, WB-O2 Datalogger, and WB-O2 Slim products, FuelTech WB-O2 sensors measure 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. FuelTech also offers an alcohol model designed for high horsepower alcohol combinations, providing high accuracy and low AFR readings. Maintain fuel efficiency and emissions standards with the FuelTech WB-O2 sensor best suited for your application.

Not Yet Reviewed

$69.00

FAST 5-Wire Wideband Oxygen Sensors

FAST 5-wire wideband oxygen sensors are designed for wideband, closed-loop applications. They can read air/fuel ratios from 10:1 to 16:1.

4.8 out of 5 stars ( 10 )

$123.95

$320.95

Innovate Air/Fuel Ratio Monitor Accessories

These accessories from Innovate are designed to work with your Innovate air/fuel ratio monitor. They are perfect for upgrading your current monitor or for replacing worn-out components.

4.56 out of 5 stars ( 43 )

$99.99

MSD Power Grid Dual NTK Wideband O2 Modules

MSD Power Grid Dual NTK Wideband O2 modules are plug-and-play units that monitor and record the air/fuel ratio (AFR) of internal combustion engines. These dual channel air/fuel ratio systems are designed to seamlessly interface with MSD's Power Grid system controller (sold separately). They come with an extension harness, the sensors, connectors, and other parts necessary to accurately measure the AFR of vehicles running on gasoline and fuel containing alcohol. Features: * Plug-and-play Power Grid module * Works seamlessly with additional MSD Wideband oxygen sensor modules * No set up or calibration required (free air calibration is optional for added precision) * Can be expanded to operate with a second sensor * Fully potted and sealed unit with automotive-grade connectors * 0.5 to 4.5 V analog output voltage for a gauge or data acquisition * LEDs to monitor system operation and health * High-speed data acquisition (when used with the Power Grid controller) * Back pressure compensated AFR when used with optional exhaust pressure module (sold separately)

1.0 out of 5 stars ( 1 )

$799.95

Racepak Air/Fuel Sensors

Collect exhaust samples accurately with Racepak air/fuel sensors. These A/F sensors come with a 13 in. pigtail cable and are compatible with either gasoline or methanol fueled engines. Gasoline application will display ratios between 9.55:1 and 20:1, while methanol will show from 4.22:1 to 8.7:1. Racepak air/fuel sensors can be used with all V-Net products, and can run on 12 to18 V battery systems.

Not Yet Reviewed

$129.95

$169.95

HalTech Wideband Hardware Packs

HalTech wideband hardware packs include the oxygen sensor, adapter harness, and weld-in bung to plug-and-play with a Nexus Series harness. Select the pack for LSU 4.9 or NTK.

Not Yet Reviewed

$180.00

MSD Replacement Oxygen Sensors

MSD replacement oxygen sensors serve the fundamental purpose of providing accurate exhaust gas information to an engine control unit (ECU) or a data logger. For typical vehicle applications, this information allows the ECU to optimize the air-fuel mixture for maximum fuel efficiency and reduced emissions. For performance and racing applications, the MSD Wide-Band O2 sensor modules provide detailed air-fuel ratio data to the MSD Power Grid, which helps in custom fuel calibration and recording.

5.0 out of 5 stars ( 2 )

$158.95

Summit Racing™ Oxygen Sensors

Summit oxygen sensors will keep your engine running reliably by properly monitoring the amount of oxygen in your exhaust stream. Our sensors are manufactured to the highest quality standards.

5.0 out of 5 stars ( 1 )

$80.99

$94.99

Motorcraft Oxygen Sensors

Motorcraft replacement oxygen sensors are designed to meet Ford Motor Company requirements for durability and emission performance. They will work with the electronic systems in Ford, Lincoln, and Mercury vehicles.

3.4 out of 5 stars ( 5 )

$48.99

$127.99

Caspers Electronics Heated Oxygen Sensor Retrofit Kits

Caspers Electronics heated oxygen sensor retrofit kits allow a new-style heated oxygen sensor to be installed on a vehicle that originally came with a non-heated, one-wire sensor. Heated sensors are more active and responsive than non-heated sensors and are also more resistant to contaminants such as lead. The kits feature a simple 2-wire installation and come complete with a 4-wire heated oxygen sensor and adapter harness.

4.71 out of 5 stars ( 17 )

$84.99

MSD Power Grid Wide Band Oxygen Sensors

MSD Power Grid wide band oxygen sensors are replacements for the MSD Power Grid wideband O2 sensor module. The LSU 4.9 is the robust design combined with a high production quality standard. They will also work with Holley Sniper EFI and Terminator X Systems. MSD Power Grid wide band oxygen sensors feature anti-seize pre-applied to sensor threads for an easy install and removal, and they are compatible with gasoline, methanol, ethanol, E85, propane, and diesel.

5.0 out of 5 stars ( 1 )

$184.95

$299.95

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