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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.
( 35 )
$199.95
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$359.95
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.
( 54 )
$160.95
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.
( 174 )
$31.99
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$348.99
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.
( 23 )
$145.95
AEM Electronics inline wideband UEGO controllers give all the benefits of the AEM Electronics wideband Air/Fuel gauges to those who do not require or want an additional gauge in the car. Perfect for datalogging, engine management systems or racing applications where a gauge is not desired. With simple wiring and easy installation, the weatherproof controller can be mounted anywhere in or outside the vehicle. The system features a Bosch sensor with an accuracy of .1 AFR, making it among the fastest and most accurate widebands available. Other features include: * Ideal AFR monitoring tool for EFI and carburated applications, and engine dynamometers * Does not oscillate AFR reading like narrow band sensors * No laptop required for monitoring! * 0-5V analog output included for use with data loggers and virtually any engine management system * Detects AFR sensor problems and outputs error values which can be used to deactivate feedback * Reads Gasoline AFR values from 8.5 to 18:1 AFR * Reads E85 AFR from values 5.7 to 12:1 AFR * Reads Ethanol AFR values from 5.2 to 11:1 AFR * Reads Methanol AFR values from 3.7 to 7.8:1 * Reads Lambda values from 0.58 to 1.22 AFR
( 6 )
$206.95
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 )
$111.00
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.
( 107 )
$22.99
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$172.99
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
( 102 )
$26.99
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$514.99
HalTech Single Channel CAN O2 Wideband Controller Kits are smaller, lighter and waterproof! The new controllers can now be safely fitted inside your engine bay. The kits are available in different models: -- Suits: BOSCH LSU 4.9 SENSOR * Includes: Single Channel, CAN Wideband Controller, 4.9LSU Sensor, CAN Cable (4 ft./1200mm), Power Supply Cable, Weld-on Bung, Quick Start Guide. * Notes: The ideal CAN expansion accessory for all Elite Series ECUs. -- Suits: NTK SENSOR * Includes: Single Channel, CAN Wideband Controller, NTK Sensor, CAN Cable (4 ft./1200mm), Power Supply Cable, Weld-on Bung, Quick Start Guide. * Notes: Best product for methanol powered vehicles
( 2 )
$375.00
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$550.00
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)
( 1 )
$130.00
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$144.00
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.
( 80 )
$25.99
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$236.99
MSD Power Grid wide band oxygen sensor modules provide valuable air/fuel ratio data to your MSD Power Grid, data logger, or air/fuel ratio gauge. These modules feature: * Plug-and-play with MSD Power Grid * Easy set-up; no free-air calibration required * Completely sealed unit for durability in race environments * Bosch 4.9 oxygen sensor * 0 to 5 V output to run an air/fuel gauge or data logger * Dual-color LED provides on board diagnostics * Multiple modules can be used on a single Power Grid * Data logs air/fuel ratio and heater voltage * Fuel calibration options for gasoline, methanol, ethanol, E85, propane, and diesel * Custom fuel calibration option can be programmed by user
( 2 )
$334.95
When you need to block-off empty ports or unused O2 bungs, Stainless Works oxygen sensor plugs work like a charm. These stainless steel hex plugs are CNC-machined with male threads for effortless fitting. Use anti-seize lubricant when installing these plugs.
( 9 )
$12.35
Are you in need of an air-fuel-ratio monitor kit for your HP Tuned vehicle? Measure your AFRs with extreme precision using Ballenger Motorsports' AFR500v3 wideband control kits preconfigured specifically for vehicles using HP Tuners' software. As one of the most critical tools a tuner requires for properly calibrating a vehicle, the AFR500 air fuel ratio monitor provides professional grade measurement of air-fuel-ratio without breaking the bank. Ballenger AFR500v3 kits offer a linear analog output to be used as an input to engine control systems, gauges, or data acquisition systems. They are capable of reading air-fuel ratio values from 9.0:1 to 16.0:1 (standard range) with a resolution of 0.1 to provide excellent resolution in the tuning range of most performance vehicles. Key features and benefits: * Large, bright digital display controller (3.4 in. x 2.7 in. x 1.3 in.) * 13 ft. wiring harness with sealed connections * NTK production grade sensor * Standard measurement range * Display gasoline (standard) * Weld-in steel exhaust boss and plug * Mounting Velcro® * Comprehensive installation, troubleshooting, and tuning manual * 0 to 5 V analog output signal * 11 to 28 V input power (24 V system capable) * Compatibility with most aftermarket ECUs * Digitally derived output with a higher resolution digital/analog converter * 4 times the measurement resolution (4096 increments compared to the previous 1024) * ASIC chips (a common point of failure from electrostatic damage) have been replaced with a custom board providing better protection and upgrade capabilities * Ability to display from 0.0 to 6.0 in lambda setting for better flexibility with alternate fuels, such as diesel * Ability to upgrade firmware for future sensor types * All harnesses, control units, accessories, etc. are backward and forward-compatible * Options are selectable at any time via internal jumpers * NTK Calibration grade sensor highly recommended for low AFR methanol applications
Not Yet Reviewed
$549.99
FAST has revolutionized the tuning industry with the most advanced, app-based, wireless air/fuel meters, in both dual and single sensor options. These kits use an underhood-mounted Bluetooth module, connected to Bosch LSU 4.9 oxygen sensors in one or both of your engine's exhaust outlets—giving you the full story on the state of your engine's tune. With the dual sensor unit, you can read both wideband oxygen sensors individually, or average them together for super accurate readings of the engine's true air/fuel ratio. Easy to use with any iOS or Android device, the FAST wireless air/fuel meter app includes a simple, built-in data logger that records up to two minutes of air/fuel and RPM data. Fuel calibrations are preloaded for measuring gasoline, all popular ethanol blends, methanol, diesel, and more. Advanced features include 0-5 V output for external data loggers and digital gauges. Additionally, a selectable module output is provided that can be used as: an RPM-activated window switch; a lean air/fuel ratio safety cut-off; or an innovative anti-theft feature. This would allow you to manually activate/deactivate a vehicle immobilizing relay—a simple way to protect your vehicle from theft! Additional details: * Monitor air/fuel ratio directly from any iOS or Android smartphone * Supports all popular fuel types * Clean install, no extensive wiring or permanent gauges needed * Includes oxygen sensor bungs and 39.37 in. of sensor wiring With features unlike anything else on the market, it's clear that FAST wireless air/fuel meter kits are the best choice for the serious engine tuner.
( 4 )
$734.95
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.
( 10 )
$123.95
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$320.95
More simplistic EFI systems have made conversions extremely popular, but adding the sensor often means making major changes to your exhaust system. Hooker clamp-on oxygen sensor bungs are designed to work with your current exhaust for an easy installation. Drill an appropriate size hole in the indicated location, clamp on the 304 stainless steel bung, and install the sensor. Simplify EFI conversions with Hooker clamp-on oxygen sensor bungs.
( 28 )
$49.95
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
( 22 )
$111.95
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$158.95
Summit Racing™ oxygen sensor extension harnesses are a must with full-length headers and other specific applications. These extension harness sets feature a direct plug-in design to eliminate the cutting and lengthening of oxygen sensor wires, along with high-temperature sleeving to help protect the wires from heat. They're available in a variety of plug styles, harness lengths, and other options. Order the pair recommended for your vehicle.
( 13 )
$36.99
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$62.99
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.
( 1 )
$184.95
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$299.95
Looking for a solution to measure your vehicle's air-fuel ratio with CAN configuration? Designed for professional tuners and DIY enthusiasts alike, Ballenger AFR500CANv3 wideband monitor kits provide plug-and-play digital CAN Bus messaging and the ability to configure for CAN-enabled systems with specific presets for HP Tuners, making them a seamless and convenient option for measuring air-fuel-ratio in your HP Tuned build. They are capable of reading air-fuel ratio values from 9.0:1 to 16.0:1 (standard range) with a resolution of 0.1 to provide excellent resolution in the tuning range of most performance vehicles. They come equipped with PC software for programming your CAN or OBDII message structure--no adapters or extra hardware are required for PC programming. Key features and benefits: * CAN flying lead and USB programming harness * PC software for full digital programmability * Large, bright digital display controller (3.4 in. x 2.7 in. x 1.3 in.) * Display lambda * 13 ft. wiring harness with sealed connections * NTK production grade sensor * Standard measurement range * Weld-in steel exhaust boss and plug * Mounting Velcro® * Comprehensive installation, troubleshooting, and tuning manual * CAN specific manual addendum * HP Tuners/OBDII CAN connection * 0 to 5 V analog output signal * 11 to 28 V input power (24 V system capable) * Compatibility with most aftermarket ECUs * Programmable CAN termination resistor * Sensor averaging filter setting * Oxygen percent output * Fault condition diagnostics * IP, pump cell current output * Sensor temperature output * Heater duty cycle output * Battery voltage output
Not Yet Reviewed
$639.98
FiTech oxygen sensor bung assemblies offer a no-weld installation. Oxygen sensors are vital components that help you adjust to your engine's fuel/air ratio via the electronic control unit (ECU). With these easy-to-install kits, you're on your way to improved performance. Simply drill a hole in your exhaust, install the gasket and sensor fitting, and then secure with the band clamps. Voila! Now you can install an oxygen sensor without welding in a bung, thanks to FiTech.
( 22 )
$21.00
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.
( 5 )
$48.99
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$124.99
BBK oxygen sensor extension harness sets are direct plug-in designs to prevent the cutting and lengthening of your oxygen sensor wires. They are ideal for full-length headers and other specific applications.
( 45 )
$69.99
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$89.99
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