This sensor came with plenty of wire and a nice heat safe tubing as protection for the wires. Very easy to wire up. I have a chevy 350 with a 4l60 and the wires are 2 brown 1 purple, the sensor had 2 white 1 black. Put white to the brown and black to the purple and it worked perfectly for my application. The 4l80 transmission does NOT use a 3 wire sensor so be aware before you purchase your o2 sensor. Ask me how I learned this lol. Yes I wasted some money and bought the wrong part before I learned the error of my ways. This part however is an perfect fit and besides the wire color and a different style of heat protection tubing it is almost identical. I highly recommend the use of this product.