GM Genuine Parts Engine Balance Shafts are designed, engineered, and tested to rigorous standards, and are backed by General Motors. In every reciprocating engine, inertial forces and moments of inertia develop due to the oscillating motion of the pistons, connecting rods, and the transmission behavior of the crankshaft drive. Balance shafts are weighted shafts used to offset these vibrations of the moving and unbalanced internal components of an engine. 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 reduce internal loads and vibrations that stress metal and may eventually lead to component failure
• A balanced engine will generally be more efficient and reliable and can tolerate much higher engine speed
• 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
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