Innovate O2 02 Sensor Wideband Bosch LSU4.9 3888

Bosch LSU 4.9 5-wire, wide-band O2 sensor. Replacement sensor compatible with LM-2, LC-2, and MTX-L, SCG-1, PSB-1, and PSN-1. 

NOTE: Verify which sensor is being used with your kit. The latest generation wide bands are compatible with both the Bosch LSU 4.2 and 4.9 but the sensor connector is different on each one. Reference the OE Bosch part number etched on the sensor body. 
LSU 4.2: 0 258 007 057 
LSU 4.9: 0 258 017 025 

Another way to verify which sensor is being used is to connect the unit to the LM Programmer software. Please see product's user manual.