6.0L Ford Powerstroke Diesel Injector Saver Kit - Blue Spring Upgrade and Monstor HFCM Plug Prevents Fuel injector damage from low fuel pressure / Easy to Install Replaces factory spring that looses tension over time Includes everything needed including cover gasket and regulating piston seal Fits all 2003 - 2010 6.0L Powerstroke Diesel Monstor HFCM Drain plug replaces factory drain plug that rounds off making removal impossible. "The Monster" features a 3/4 inch hex head. No more rounding off ! A zinc coating is employed to minimize corrosion issues. Ford reccomends draining the water from your HFCM on a monthly basis. Water can very quickly destroy a set of injectors - consider this a minimum.