When it comes to an aftermarket install, it helps to be prepared. Anything can happen when you pop off an OEM (Original Equipment Manufacturer) part. In our aftermarket install section, we give you a heads up on what you can expect before you begin working on the project. There are many things to consider when replacing OEM parts on your 4Runner. We do our best to document every step and more of the install process to give you a good idea of what it takes and how to prevent common challenges along the way.