Features: Some GM parts may have previously been referred to as ACDelco GM Original Equipment (OE) GM parts are designed, engineered, and tested to exacting standards and are supported by General Motors GM engineers develop and test OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac GM regularly updates production and service part designs to incorporate new materials and technologies Description: GM strut dampers are designed, engineered, and tested to exacting standards and are supported by General Motors. GM parts are true OE parts installed during production or tested by General Motors for GM vehicles. Some GM parts may have previously been referred to as ACDelco GM Original Equipment (OE).