GM Genuine Parts Wheel Hub Extensions are designed, engineered, and tested to rigorous standards, and are backed by General Motors. These extensions are typically installed between the rotors and wheels and are used to widen your GM vehicle's track, resulting in optimal handling. They also provide additional clearance inside the wheel for brake or suspension components.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).

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• Helps widen your GM vehicle's track for optimal handling
• Some 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 Motors
• GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
• GM regularly updates production and service part designs to integrate new materials and technologies