If you have original GM Manifolds and PPE Up-Pipes, this bracket (stay) secures your PPE Down-Pipe and prevents movement. An unsecured Down-Pipe that moves can come in contact and damage the Up-Pipe bellow even under normal driving conditions. This movement can also contribute to metal fatigue and cracking of the Down-Pipe. This is a simple solution to help solve the problem. Fabricated from 1/8 Inch 304 stainless steel.