1 3
1 3

AEM UEGO Replacement Wideband O2 Sensor Bosch LSU 4.2: Fits Most Models

AEM UEGO Replacement Wideband O2 Sensor Bosch LSU 4.2: Fits Most Models

Upgrade your air/fuel monitoring with the AEM Bosch LSU 4.2 Wideband O2 Sensor. Precision-calibrated for accuracy to 0.1 AFR, it fits most models and pairs seamlessly with AEM wideband controllers. Factory-calibrated and ready to deliver reliable, real-time data without the need for free-air calibration. Durable, plug-and-play design ensures easy replacement and optimal performance.
Part # 30-2001

$100.75
$125.95 $100.75
Sale Sold out
Shipping calculated at checkout.

Low stock: 7 left

  • FREE SHIPPING

    MOST orders over $250 ship free*

  • AUTHORIZED RETAILER

    100% Authorized Direct Retailer

  • LIVE INVENTORY

    Inventory updated throughout the day

  • 0% APR FINANCING

    Easy payment plans through Affirm and Shop Pay

View full details
Upgrade your air/fuel monitoring with the AEM Bosch LSU 4.2 Wideband O2 Sensor. Precision-calibrated for accuracy to 0.1 AFR, it fits most models and pairs seamlessly with AEM wideband controllers. Factory-calibrated and ready to deliver reliable, real-time data without the need for free-air calibration. Durable, plug-and-play design ensures easy replacement and optimal performance.

AEM UEGO Replacement Wideband O2 Sensor Bosch LSU 4.2

Fits Most Models

30-2001

Overview:

The AEM UEGO Replacement Wideband O2 Sensor Bosch LSU 4.2 is a precision-engineered sensor designed to replace worn or damaged wideband oxygen sensors in your vehicle’s air/fuel ratio monitoring system. Specifically built for use with AEM wideband air/fuel UEGO controllers, this sensor ensures accurate and reliable readings to help you maintain optimal engine performance and efficiency.

Ideal for performance enthusiasts, tuners, and daily drivers alike, this sensor delivers consistent and precise air/fuel ratio data, which is critical for engine management and tuning applications. Whether you are monitoring your engine’s combustion for power gains or emissions control, this sensor provides dependable performance without the need for frequent recalibration.

Key Features:

This replacement sensor offers advanced technology and design features that ensure accuracy and durability:

  • Equipped with a Bosch LSU 4.2 sensing element, known for its reliability and fast response time.
  • Includes a laser-etched, calibrated resistor embedded in the connector body, matched to each individual sensor for precise output.
  • Factory-calibrated at Bosch, eliminating the need for free-air calibration when used with compatible AEM wideband controllers.
  • Provides accuracy to within 0.1 AFR, enabling fine-tuned air/fuel ratio monitoring.
  • Features an attached cable and male connector for straightforward installation and secure connection.
  • Compatible with a wide range of AEM wideband controllers and gauges, ensuring versatile application.
  • Maintains sensor integrity by warning against modifications to the resistor or connector, which would invalidate sensor output.

Construction & Design:

The sensor is built with Bosch’s proven LSU 4.2 technology, delivering a robust and durable design suitable for demanding automotive environments. The integrated calibrated resistor within the connector body is laser-etched for permanent accuracy and traceability. This design ensures that each sensor is uniquely matched and factory-calibrated, providing consistent performance without the need for additional calibration steps during installation.

The attached cable and connector are engineered for reliable electrical connection and ease of replacement, minimizing downtime and installation complexity.

Installation & Fitment:

This replacement sensor is designed to fit most vehicle models that utilize AEM wideband air/fuel UEGO controllers. It is a direct replacement part, intended to seamlessly integrate with your existing AEM wideband system without requiring modifications.

  • Plug-and-play installation with compatible AEM controllers and gauges.
  • No cutting, drilling, or special tuning is required.
  • Maintains factory-level sensor accuracy and reliability when installed correctly.

Compatible AEM Controllers

  • AEM Infinity Engine Management Systems
  • 30-4100 Digital Wideband UEGO Gauge
  • 30-4900 Wideband Failsafe Gauge
  • 30-2310 Inline Wideband UEGO Controller
  • 30-2340 4-Channel Wideband UEGO Controller
  • 30-2340-N 4-Channel Wideband UEGO Controller – NASCAR
  • 30-5130 Analog Wideband UEGO Gauge
  • 30-5143 Analog E85 Wideband UEGO Gauge
  • 30-2320 X-WiFi Wideband/EGT Controller

What’s Included

  • One Bosch LSU 4.2 Wideband UEGO O2 Sensor with attached cable and male connector

Ideal For:

This sensor is perfect for anyone needing a reliable replacement for their AEM wideband oxygen sensor, including:

  • Performance enthusiasts maintaining precise air/fuel ratio monitoring
  • Tuners requiring accurate sensor data for engine management systems
  • Daily drivers seeking consistent engine performance and fuel efficiency
  • Motorsport applications where sensor accuracy is critical
Part #: 30-2001
Brand: AEM
Categories
{"id":10044586918184,"title":"AEM UEGO Replacement Wideband O2 Sensor Bosch LSU 4.2: Fits Most Models","handle":"aem-uego-replacement-wideband-o2-sensor-bosch-lsu-4-2","description":"Upgrade your air\/fuel monitoring with the AEM Bosch LSU 4.2 Wideband O2 Sensor. Precision-calibrated for accuracy to 0.1 AFR, it fits most models and pairs seamlessly with AEM wideband controllers. Factory-calibrated and ready to deliver reliable, real-time data without the need for free-air calibration. Durable, plug-and-play design ensures easy replacement and optimal performance.","published_at":"2025-12-11T19:10:57-08:00","created_at":"2025-12-11T14:09:28-08:00","vendor":"AEM","type":"Engine Components","tags":["activeYMM","Brand-AEM","LCPUSH","newt14","Pushed - 2025-12-12T03:10:59Z","smpush","t14brandproduct","YMM_2004_2006_Scion_xA","YMM_2004_2006_Scion_xB","YMM_2005_2010_Scion_tC","YMM_2008_2014_Scion_xD","YMM_2008_2015_Scion_xB","YMM_2011_2016_Scion_tC","YMM_2012_2015_Scion_iQ","YMM_2013_2016_Scion_FR-S","YMM_2013_2020_Subaru_BRZ","YMM_2016_Scion_iA","YMM_2016_Scion_iM","YMM_2017_2020_Toyota_86","YMM_2020_2026_Toyota_GR_Supra","YMM_2022_2026_Subaru_BRZ","YMM_2022_2026_Toyota_GR86","YMM_2023_2026_Toyota_GR_Corolla"],"price":10075,"price_min":10075,"price_max":10075,"available":true,"price_varies":false,"compare_at_price":12595,"compare_at_price_min":12595,"compare_at_price_max":12595,"compare_at_price_varies":false,"variants":[{"id":51196876521768,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":"30-2001","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"AEM UEGO Replacement Wideband O2 Sensor Bosch LSU 4.2: Fits Most Models","public_title":null,"options":["Default Title"],"price":10075,"weight":907,"compare_at_price":12595,"inventory_management":"shopify","barcode":null,"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}}],"images":["\/\/fastscions.com\/cdn\/shop\/files\/ae065e31169bf900028a5eb4610dbdf18ca20a21-1.jpg?v=1765490970","\/\/fastscions.com\/cdn\/shop\/files\/fe20a4163dd04472054dad27544ff6f8c5ae4433.jpg?v=1765490970","\/\/fastscions.com\/cdn\/shop\/files\/9d982d851e1605b120b732da67bea8ce531388bd.jpg?v=1765490970"],"featured_image":"\/\/fastscions.com\/cdn\/shop\/files\/ae065e31169bf900028a5eb4610dbdf18ca20a21-1.jpg?v=1765490970","options":["Title"],"media":[{"alt":null,"id":43167491359016,"position":1,"preview_image":{"aspect_ratio":1.0,"height":583,"width":583,"src":"\/\/fastscions.com\/cdn\/shop\/files\/ae065e31169bf900028a5eb4610dbdf18ca20a21-1.jpg?v=1765490970"},"aspect_ratio":1.0,"height":583,"media_type":"image","src":"\/\/fastscions.com\/cdn\/shop\/files\/ae065e31169bf900028a5eb4610dbdf18ca20a21-1.jpg?v=1765490970","width":583},{"alt":null,"id":43167491391784,"position":2,"preview_image":{"aspect_ratio":1.0,"height":583,"width":583,"src":"\/\/fastscions.com\/cdn\/shop\/files\/fe20a4163dd04472054dad27544ff6f8c5ae4433.jpg?v=1765490970"},"aspect_ratio":1.0,"height":583,"media_type":"image","src":"\/\/fastscions.com\/cdn\/shop\/files\/fe20a4163dd04472054dad27544ff6f8c5ae4433.jpg?v=1765490970","width":583},{"alt":null,"id":43167491424552,"position":3,"preview_image":{"aspect_ratio":1.0,"height":583,"width":583,"src":"\/\/fastscions.com\/cdn\/shop\/files\/9d982d851e1605b120b732da67bea8ce531388bd.jpg?v=1765490970"},"aspect_ratio":1.0,"height":583,"media_type":"image","src":"\/\/fastscions.com\/cdn\/shop\/files\/9d982d851e1605b120b732da67bea8ce531388bd.jpg?v=1765490970","width":583}],"requires_selling_plan":false,"selling_plan_groups":[],"content":"Upgrade your air\/fuel monitoring with the AEM Bosch LSU 4.2 Wideband O2 Sensor. Precision-calibrated for accuracy to 0.1 AFR, it fits most models and pairs seamlessly with AEM wideband controllers. Factory-calibrated and ready to deliver reliable, real-time data without the need for free-air calibration. Durable, plug-and-play design ensures easy replacement and optimal performance."}