This harness connects between the oxygen sensor and the car’s wiring harness allowing the JB4 unit to be taped into without modifiying the stock connector for a true plug and play method without leaving a trace on the factory wiring no cuting or use of posi taps 


*Includes a male and female spade to be crimped into the JB4 blue wire .

JB4 No Splice Connector (MK6/MK7 EA888)