Do you have a Paradox by Design Cooling Upgrade kit and want to add a gauge or need a convenient place to add a turbocharger coolant return? Here is your best bet. This custom fitting matches the rest of our products and is placed between your existing block plate on either side of the block and gives you a standard 1/8 MPT port for your temp sender or a return port for a turbocharger or other need. If you need two ports you can place one on the left and another on the right side of the block for two ports!