GM Genuine Parts Clutch Pilot Bearings are designed, engineered, and tested to rigorous standards, and are backed by General Motors. These bearings support the end of the transmission input shaft while the clutch is disengaged. They are located in the center of the flywheel in the crankshaft flange. 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:Support the end of the transmission input shaft while the clutch is disengagedAllows for smooth changing of gearsHelps keep transmission input shaft properly alignedSome 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