GM Genuine Parts Differential Bearings are designed, engineered, and tested to rigorous standards, and are backed by General Motors. These bearings are low friction rotating elements that support the drive axle differential carrier within the axle or final drive housing. 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). Product Features:Low friction rotating elements that support the drive axle differential carrier within the axle or final drive housingSome GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE)GM Genuine Parts are designed, engineered and tested to rigorous standards, and are backed by General MotorsGM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicleGM regularly updates production and service part designs to integrate new materials and technologies