GM Genuine Parts Insulation Pads are designed, engineered, and tested to rigorous standards, and are backed by General Motors. These pads help prevent engine compartment noise from entering your vehicle's interior. They also help control heat from the engine to keep the hood cool. 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).