GM Genuine Parts Fuel Tank Sending Unit Gaskets are designed, engineered, and tested to rigorous standards, and are backed by General Motors. These gaskets help prevent contaminants from entering your vehicle's fuel tank sending unit, and help prevent fuel leaks. GM Genuine Parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE).