Note most newer wideband controllers use the 4.9. Please verify which sensor you need for your wideband before ordering. Does not include gauge or controller.
Find your controller here to know which sensor to order:
Note: In identification picture above lower larger connector type is the 4.2 sensor for the Innovate LC1/LM1 and various other widebands that require the D-shaped 6 pin 5 wire Bosch LSU 4.2 sensor