AEM 30-2063 Bosch 4.2LSU Wideband UEGO Sensor with Stainless Bung Kit

Vehicle Fitment

• Universal - Compatible with AEM 4-Channel Wideband UEGO Controller (PN 30-2340) and other AEM Wideband UEGO controllers; suitable for any forced induction or naturally aspirated application requiring individual port AFR monitoring

Fitment Notes

• Designed specifically for use with AEM 4-Channel Wideband UEGO Controller (PN 30-2340); one sensor is included with the controller kit - this kit is sold separately for multi-cylinder applications requiring additional sensors
• The laser-etched calibrated resistor in the sensor connector is unique to each unit - do not modify or swap connectors, as this will invalidate sensor output
• For forced induction pre-turbo mounting, use with AEM Exhaust Backpressure Compensation Kit (PN 30-2064) for accurate AFR readings
• This is a universal part - not vehicle-specific; verify compatibility with your controller before purchase

Features

• Bosch 4.2LSU Wideband UEGO technology for fast, precise air-fuel ratio measurement
• Accurate to 0.1 AFR - never requires free-air calibration when used with an AEM controller
• Laser-etched calibrated resistor in the sensor connector for factory-matched accuracy
• Laboratory-calibrated at the Bosch factory for consistent, reliable output
• Response time of less than 100 milliseconds for real-time AFR monitoring
• Integrated heater element warms up in less than 20 seconds for fast readiness
• PTFE insulators rated to withstand temperatures up to 1,400°F (800°C)
• Finned stainless steel stand-off bung cools the sensor body and minimizes exhaust port restriction

Specifications

• Sensor Type: Bosch LSU 4.2 Wideband UEGO (Universal Exhaust Gas Oxygen)
• Connector: 5-wire
• Accuracy: ±0.1 AFR
• Response Time: <100 milliseconds
• Warm-Up Time: <20 seconds
• Max Operating Temperature (Insulator): 1,400°F (800°C)
• AFR Range (Gasoline): 8.5-18:1 AFR
• AFR Range (E85): 5.7-11.9:1 AFR
• Bung Material: Stainless steel (tall manifold / finned stand-off design)
• Fitment Type: Universal

Included Components

• 1x Bosch 4.2LSU Wideband UEGO Sensor
• 1x Stainless Steel Tall Manifold Bung (weld-on, finned stand-off design)

Product Description

The AEM 30-2063 is a replacement Bosch 4.2LSU Wideband UEGO sensor and stainless steel bung kit designed for use with the AEM 4-Channel Wideband UEGO Controller (PN 30-2340). It is the go-to solution for racers monitoring individual cylinder air-fuel ratios on multi-cylinder engines, with each additional sensor enabling monitoring of one more cylinder - up to four per controller, or up to twelve by daisy-chaining three controllers via AEMnet CAN bus.

Each sensor features a laser-etched calibrated resistor unique to that individual unit, ensuring factory-level accuracy straight out of the box without free-air calibration. The finned stainless steel stand-off bung is engineered for individual port mounting, cooling the sensor body and minimizing exhaust flow restriction. Optimized for forced induction applications and compatible with both turbocharged and supercharged setups, this sensor delivers sub-100ms response times for real-time AFR feedback during tuning and competition use.