The Magnefine couldn't be easier to install. Cut out a section of cooler line and install it with the hoses, clamps and tubing supplied. We recommend using the optional Quik Fittings (red arrows), which have a ferule fitting that seals to the tubing and a barbed fitting for the hose. This will offer a more leak-free seal. We replaced the screw clamps with constant tension types. Unless you are starting with a new truck, the best place to install the Magnefine is in the return line.