ECU Master Bosch 4.9 Sensor, Extension Harness, Connector



Add this wideband sensor and harness to your ECU Master Black for closed loop fuel control and logging of air/fuel ratio. Kit includes the latest Bosch 4.9 sensor for the quickest and most accurate air/fuel (lambda) readings possible. 1.5m extension cable allows easy installation in most applications, whether front or mid engine.


  • Bosch 4.9 sensor
  • 5′ (1.5m) extension cable
  • AMP 6-pin connector which may be added to your engine management harness

ECU Master Black has an onboard wideband controller so this sensor may be plugged directly in to the ECU. Other ECUs may need a wideband controller to use this sensor.

Additional information

Weight 1 lbs
Dimensions 3 × 3 × 1 in