Easy to install, with a sensor socket. This is NOT an oxygen sensor. If your underhood emission sticker says A/F, this is the one. If the sticker says O2, it's not. The new sensor needs to look the same - - the holes in the in-manifold protrusion are very different, and they don't interchange, cuz the computers are entirely different. My car's a 2001 2.2l Camry with fed-California emission controls.