Replaces Part Number/OEM Number:42031AG000,42031-AG000 Compatibility Range:The gas cap fit for Subaru 2008-2011 Impreza fuel tank cap,fit for Subaru 2008-2011 Impreza WRX Sti fuel tank cap,fit for Subaru 2008-2011 Impreza WRX fuel tank cap,fit for Subaru 201-2012 Forester ALL fuel tank cap Durable Materials:Gas cap is made from high quality materials to ensure long lasting performance. Products are manufactured to original size specifications to ensure a perfect fit for your vehicle.Provides a tight seal to keep your vehicle's fuel tank closed, safety your vehicle's occupants, fuel economy and reduce vapor emissions Easy Installation:Very easy to install.First, you need to open the old fuel tank cap and remove it. Secondly, take out the new fuel tank cap and replace it, seal it by turning the cap until you hear a click to make sure the car fuel tank cap is tight. Finally, check that the cap fits properly Note: Please check the gas cap OEM number carefully to make sure it has the same OEM number so that it will not work after purchase Gas Cap OEM# 42031AG000 Fuel Tank Cap Replacement Fit for Subaru 2008-2011 Impreza 2008-2011 Impreza WRX 2008-2011 Impreza WRX Sti 2011-2012 Forester,42031-AG000 Gas Caps