This is a universal 4-wire oxygen sensor; it requires the cutting of the factory plug and wiring in this replacement. The submersible Bosch patented connection system has undergone rigorous quality testing to uscar standards. Tests have proven that this watertight system protects against contaminaiton and withstands the effects of extreme temperatures and engine vibration. User friendly instructions, no special tools are required to install. Just strip wires & go! Specially designed heat resistant - posi-lock connectors can easily be taken apart and recon- nected in case of wiring mistake.