This is a Uprated fuel tank sending unit for a Triumph Spitfire 1962 to 1980. The electronics are made on modern ceramic with palladium silver conductor pattern that come into contact with the contact arm that is made of phosphor bronze. All of this means long life and accurate measurement of the fuel that is in your tank. Unit comes with new gasket and locking ring. Don't guess how much fuel you have left, replace your old dead sender with this new one.