To use this engine gasket and seal kit, first make sure your vehicle is a 2008 - 2011 Subaru Impreza or a 2009 - 2011 Subaru Forester. Before installation, clean the engine area thoroughly to ensure a good fit. It's highly recommended to have a certified Subaru dealership install the parts, as Subaru of America only provides a warranty for parts installed by them and the part must match your vehicle's VIN. For maintenance, regularly check the seals for any signs of wear or leakage. If you notice any issues, replace the seals promptly to avoid engine problems.