This is a fuel rail cross over pipe found on the LT1/SS Camaro. This is a one time use only pipe and must be replaced if removed from the vehicle. This pipe is the connection pipe that runs between both fuel rails on at LT1.
General Motors is an OEM manufacturer. GM designs and creates the vehicles and the parts for them for makes such as Buick, Cadillac, GMC, and Chevrolet. All GM branded parts are OEM standard quality components and were designed and manufactured to either be on the vehicle from the factory or purchased after the fact as an accessory.