ACDelco has a tremendous history that encompasses almost 100 years. With new advances in parts technology new inventions and innovative ideas ACDelco holds the highest standards in the industry. GM Genuine Parts Engine Oil Filter Adapter Gaskets are designed engineered and tested to rigorous standards and are backed by General Motors. 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).