New fuel heater seal for 1994-1998 Dodge Ram Cummins Diesel trucks.  This seal installs at the top of your fuel heater.  Fuel heater is removed by using an allen/hex to loosen center stud.  Simply install new seal, reinstall heater, and install bowl/screen.  Check for leaks after running the engine for a short period - and check again for leaks after driving a few miles.