This wideband exhaust oxygen sensor is intended for replacement of an existing sensor(s) being utilized by an AutoMeter wideband air/fuel ratio gauge .The sensor is fitted with a laser etched calibration chip which prevents the need for free air calibration when used with the AutoMeter gauges for which they are specifically designed. Each sensor is factory-calibrated by Bosch for accuracy within 0.1 AFR. Bosch LSU4.2 replacement sensor only. ACCESSORIES
