10 Best O2 Sensor Wideband of 2025

Tested and Reviewed: Top 10 O2 Sensor Wideband deals with expert ratings from 8.1 to a perfect 10

March 2026 Edition

Editor's Choice

9.7

Gledewen

LSU 4.9 Lambda WideBand O2 Oxygen Sensor | for AEM 30-4110 30-0300 30-0310 - X Series AFR Inline Controller - UEGO A/F Ratio Wideband 02 Gauge | Replace# 17025, 0258017025

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Editor's bottom line:

“This o2 sensor wideband is the best one we tested. In terms of quality, brand and price, we couldn't ask for more.”

Main Highlights

HIGH PERFORMANCEOur wideband sensor use a more sophisticated sensing element that provides a signal that is proportional to the amount of oxygen in the exhaust, helps ensure your engine is constantly monitored and operating efficiently, while maximizing performance
Perfect Fit Made in strict accordance with OEM standards and tested in multiple layers before leaving the factory, it matches the original sensor and can be directly replaced.
FitmentLSU4.9 Wideband Controllers with part numbers 30-4110 Wideband UEGO Gauge, 30-0300 X-Series Wideband UEGO AFR Gauge, 30-0310 X-Series Inline Wideband UEGO AFR Controller | Most 4.9 LSU Wideband Controller Gauge
REPLACE OE NUMBER17025, 0258017025, 304110, 300300, 300310. A lot of buyers brought the wrong A/F gauge sensor because they don't pay attention to the plug and the length of the sensor. Please check these 2 features before purchase
12-MONTH WARRANTYIf the wide band lambda sensor fails, stops working or any other problems, you can contact us through amazon message to apply the service of carefree REPLACEMENT or REFUND

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Picked by 397 people today

9.5

Bosch

BOSCH 17025 Oxygen Sensor

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Main Highlights

Bosch Premium Wideband A/F Oxygen (O2) Sensors are designed for use with aftermarket high performance wideband kits
Advanced Wideband sensing element for an exact air/fuel measurement vs. a typical oxygen sensor which simply sends a rich or lean signal
Robust sensor design increases sensor longevity
Seared protection tube due to 100% functional quality test
True Direct-fit' OE connectors and harness; threads pre-coated with anti-seize compound right out of the box

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9.5

AEM

AEM 30-0300 X-Series Wideband UEGO AFR Sensor Controller Gauge

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Main Highlights

The X-Series wideband UEGO AFR sensor controller gauge (PN 30-0300) features a modern, visually striking faceplate and new seven-segment, center display that is 87% larger than the 30-4110 AEM
The gauge includes a 0-5v and RS232 Serial Port output for feedback control and data logging, and an AEMnet (CANbus) output for data logging
X-Digital wideband technology gives these controllers the ability to read and report values that other controllers do not, which can deliver more optimized engine tuning and a safer overall operating condition
Faster response time improves wideband feedback control, and can provide a safer, more powerful and accurate tune
When tuning an engine using wideband AFR feedback control on an inertia dyno, dead time affects the data you are looking at because it is reported in a different operating location than when it actually occurred

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9.2

FHRHRY

Wideband UEGO Air/Fuel Ratio Gauge 52mm (2-1/16”) with 4.9 LSU Sensor, Digital AFR Controller Gauge, Wideband O2 Control Sensor kit | 0-5V Analog Output (10-20 AFR Range)

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Main Highlights

AIR/FUEL RATIO UEGO GAUGEOur wideband O2 AFR gauge has a digital LED display and LED "needle" that changes color as the AFR changes from rich to thin; Each gauge is equipped with black and silver bezels and black and white faceplates for multiple color combinations and customized appearance.
WIDELY COMPATIBILITYThe 52 mm (2-1/16 inch) gauge housing ensures that it fits most instrument pods and can be installed remotely almost anywhere. Our digital wideband gauge have 0-5V analog output, which can be used with data loggers and almost all engine management systems. Confirm compatibility by model number rather than brand or image.
PREMIUM QUALITYAccurate A/F ratio data is crucial when adjusting the engine. The 4.9 LSU sensor provides speed and accuracy for the controller, it can react quickly even for every 0.1 air-fuel ratio change, allowing you more time to respond and protect your engine safety. At the same time, it never requires free-air calibration when used with our wideband O2 UEGO AFR gauge.
INSTALLATIONThanks to the 52mm housing of the wideband gauge, you can install it almost wherever feasible. Plug and play, very convenient. In order to help you understand the accessories and installation details, we have provided an installation instruction in the package.
100% SATISFACTION SERVICEIf you have any questions or dissatisfaction, please email us and we will help you solve it perfectly - 24 Months Warranty & 24 Hours Service.

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9.0

HOAVEED

LSU 4.9 Wideband O2 Oxygen Sensor Compatible with AEM 30-4110 30-0300 30-0310 X-Series AFR Controllers | Replaces Bosch 17025 0258017025 | 5-Wire UEGO Air Fuel Ratio Sensor Universal Fit

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Main Highlights

Perfect Compatibility Designed to work seamlessly with AEM wideband controllers including 30-4110, 30-0300, and 30-0310. Fully compatible with AEM X-Series AFR Inline Controllers for accurate air-fuel ratio monitoring.
Direct Replacement for Bosch 17025 Replaces Bosch part numbers 17025 and 0258017025. Ideal OE-style fit and function. No modifications requiredjust plug and play.A lot of buyers brought the wrong A/F gauge sensor because they don't pay attention to the plug and the length of the sensor. Please check these 2 features before purchase
Accurate 5-Wire LSU 4.9 Sensor Utilizes advanced Bosch LSU 4.9 technology with 5-wire configuration for faster response and improved long-term stability. Delivers precise AFR data across a wide range of conditions.compatible with V6 3.0L BMW 128I 135I 323I 325I 325XI 328I Ect 2006-2013; compatible with Chevy Cruze; Ford Escape Focus;Toyota Camry Corolla ; Honda Accord CR-V Ect;
Durable & Heat Resistant Build Made from high-temperature resistant materials and quality components for long-lasting performance in extreme engine bay environments. Built to meet or exceed OEM standards.
12-Month Hassle-Free Warranty Backed by a 12-month warranty for peace of mind. If the wideband lambda sensor fails or encounters any issues, contact us via Amazon message to request a replacement or refund under our guarantee no hassle.

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8.8

BELKEBIR

LSU 4.9 Lambda WideBand Oxygen Sensor O2 Sensor Compatible with AEM 30-4110 Digital UEGO AFR Gauge, 30-0300 X-Series Gauge, 30-0310 Inline Controller Replace 17025, 0258017025, 304110, 300300, 300310

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Main Highlights

Engineered for a Perfect FitNo guesswork, no stress. Our 17025 Oxygen Sensor is precision-built to fit Most 4.9 LSU Wideband Controller Gauge, AEM 30-4110 Digital Wideband UEGO AFR Gauge, AEM 30-0300 X-Series Digital Wideband UEGO AFR Gauge, AEM 30-0310 X-Series Inline Wideband UEGO AFR Controller like it came straight from the factory.
Replace Part NumberThe O2 Sensor Replacement for OE Number: 17025, 0258017025, 304110, 300300, 300310.
Drive Farther, Spend Less Enjoy more miles per gallon and fewer stops at the pump! Smart sensing technology maximizes fuel efficiency and helps you save money with every drive.
Built to Endure, Designed to Perform Crafted with premium platinum and ceramic components to withstand extreme heat and pressure ensuring long-lasting performance and peace of mind.
Instant Response, Smoother Ride Experience faster acceleration and cleaner emissions. Our sensor delivers real-time data to your engine for a smoother, more responsive ride every time you hit the road.
Tested Tough, Guaranteed to Last Every unit is rigorously tested for quality and reliability. Plus, its backed by a 12-month warranty because you deserve parts you can trust.

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8.6

ACAUTO

ACAUTO 17025 Oxygen O2 Sensor fit for LSU 4.9 Lambda Wide Band 30-4110, 30-0300, 30-0310 - X Series AFR Inline Controller - UEGO A/F Ratio Wideband 02 Gauge Replace# 0258017025

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Main Highlights

Vehicle FitmentAEM Wideband Controllers fit for 30-4110 Digital Wideband UEGO Gauge, 30-0300 X-Series Digital Wideband UEGO AFR Gauge, 30-0310 X-Series Inline Wideband UEGO AFR Controller, Most 4.9 LSU Wideband Controller Gauge.
Replace OE NumberThe O2 Sensor Replacement for OE Number:17025, 0258017025, 304110, 300300, 300310,Please take care with the position tips to ensure that it is plug and the length of the sensor.
Accurate and DurabilityThe Oxygen Sensor guarantees superior performance with high-quality materials, including platinum, ceramics & 310S stainless steel. Carefully selected components ensure accurate detection and durability, making it the top choice for precise readings. Choose our sensor for dependable oxygen level data.
Fast Acting HeaterFor Planar and Wire Thimble type sensors, a fast-acting heater optimizes sensor function by enabling the oxygen sensor, Heat-resistant materials withstand high temperatures for long-lasting performance.
PackagePackage Includes: wideband o2 sensor,1 Pack, The O2 Sensor has extremely high heat resistance, corrosion resistance, abrasion resistance, High-quality perfect fit, and is easy to install.

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8.3

ZHSYMX

ZHSYMX Universal Digital Wideband Air/Fuel Ratio AFR Gauge Kit - 2-1/16"(52mm) with Sensor and Controller Box-Wideband UEGO AFR O2 Oxygen Sensor Controller Gauge

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Main Highlights

Universally Of ApplicationThe size of this Air fuel ratio gauge is 2"(52mm) that fits in a variety of instrument pods, and is compatible with a wide range of engine management systems and data loggers, providing even broader compatibility. Compatible with vehicle/system voltages up to 16V.
Easy To InstallWith a standard 52mm housing for easy installation, and it never requires free-air calibration when used with our wideband.
FunctionThe Air Fuel Gauge Kit is Included a 4.9 sensor that provides real-time feedback with high accuracy and fast response time, and the digital wideband technology gives these controllers the ability to read and report values.
Versatile designIn addition to measuring and displaying the air/fuel ratio, the Air/Fuel Ratio Gauge also features a broadband measurement and digital display.
Excellent ServiceYour Shopping Experience is Our Priority. Dedicated to Delivering High-Quality Products and Exceptional Service. Reach Out to Us for Prompt and Reliable Answers to Your Inquiries.

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8.1

FFFauto

Oxygen Sensor LSU 4.9 Lambda WideBand O2 Sensor Compatible with AEM 30-4110 30-0300 30-0310 - X Series AFR Inline Controller - UEGO A/F Ratio Wideband 02 Gauge Replace# 17025, 300300

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Main Highlights

FitmentOxygen sensor Compatible withMost 4.9 LSU Wideband Controller Gauge;AEM 30-4110 Digital Wideband UEGO Gauge;AEM 30-0300 X-Series Digital Wideband UEGO AFR Gauge;AEM 30-0310 X-Series Inline Wideband UEGO AFR Controller
Reference NumberWideband o2 sensor REPLACE 17025, 0258017025, 304110, 300300, 300310
AttentionsIf the aem wideband sensor has a different plug than the original part, this part is not compatible with your vehicle. Please compare the original part to the picture to ensure you are ordering the correct part.
High PerformanceWide band o2 sensor Features double protection layer, aluminum oxide trap layer, PTFE filter, and stainless steel housing. Reduce harmful emissions, increase fuel economy, improve engine performance, and prevent premature failure of the catalytic converter.
Durable4.9 lsu wideband sensor is crafted from high-temperature resistant material for quicker response times. Manufactured to meet original specification, direct fit without any modification.
12-MONTH WARRANTYIf for any reason at all, you are not fully satisfied with the upstream downstream oxygen sensor, simply contact us through Amazon message to apply the service of carefree REPLACEMENT or REFUND

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8.1

ZHSYMX

ZHSYMX Universal Digital Wideband Air/Fuel Ratio AFR Gauge - 2-1/16"(52mm) - Wideband UEGO AFR O2 Oxygen Sensor Controller Gauge

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Main Highlights

FunctionThe Air Fuel Gauge provide real-time feedback with high accuracy and fast response time, and the digital wideband technology gives these controllers the ability to read and report values.
Easy To InstallWith a standard 52mm housing for easy installation, and it never requires free-air calibration when used with our wideband.
Universally Of ApplicationThe size of this Air fuel ratio gauge is 2"(52mm) that fits in a variety of instrument pods, and is compatible with a wide range of engine management systems and data loggers, providing even broader compatibility. Compatible with vehicle/system voltages up to 16V.
Versatile design: In addition to measuring and displaying the air/fuel ratio, the Air/Fuel Ratio Gauge also features a broadband measurement and digital display.
Excellent ServiceYour Shopping Experience is Our Priority. Dedicated to Delivering High-Quality Products and Exceptional Service. Reach Out to Us for Prompt and Reliable Answers to Your Inquiries.

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Our Best Overall Choice

Best Choice

9.7

Gledewen

LSU 4.9 Lambda WideBand O2 Oxygen Sensor | for AEM 30-4110 30-0300 30-0310 - X Series AFR Inline Controller - UEGO A/F Ratio Wideband 02 Gauge | Replace# 17025, 0258017025

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Editor's bottom line:

“This is the best one we tested. In terms of quality, brand and price, we couldn't ask for more.”

Main Highlights

HIGH PERFORMANCEOur wideband sensor use a more sophisticated sensing element that provides a signal that is proportional to the amount of oxygen in the exhaust, helps ensure your engine is constantly monitored and operating efficiently, while maximizing performance
Perfect Fit Made in strict accordance with OEM standards and tested in multiple layers before leaving the factory, it matches the original sensor and can be directly replaced.
FitmentLSU4.9 Wideband Controllers with part numbers 30-4110 Wideband UEGO Gauge, 30-0300 X-Series Wideband UEGO AFR Gauge, 30-0310 X-Series Inline Wideband UEGO AFR Controller | Most 4.9 LSU Wideband Controller Gauge
REPLACE OE NUMBER17025, 0258017025, 304110, 300300, 300310. A lot of buyers brought the wrong A/F gauge sensor because they don't pay attention to the plug and the length of the sensor. Please check these 2 features before purchase
12-MONTH WARRANTYIf the wide band lambda sensor fails, stops working or any other problems, you can contact us through amazon message to apply the service of carefree REPLACEMENT or REFUND

Show Price

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