Its a arm on the fuel sending unit itself. According to the dealership, it can be popped off, and replaced with a new arm and float. I ordered mine for about 30 bucks and it was a heck of a lot cheaper then ordering a new fuel sending unit for 300 bucks. When you take the fuel sending unit out look for a round black float. When you take the float off, shake it, and about nine times out of ten , you will hear fuel in the float.