GM Genuine Parts Automatic Transmission Sun Gear Thrust Bearing Races are designed, engineered, and tested to rigorous standards, and are backed by General Motors. These races contain and protect other bearing components while absorbing forward thrust. 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). ⚠