GM vehicle owners and professional mechanics, when it comes to critical transmission components like output shaft bearings, genuine GM parts are definitely the way to go! This GM Genuine Parts automatic transmission output shaft bearing (part number 23047970) is designed, engineered, and tested to the same rigorous standards as the original equipment installed at the factory. Some GM Genuine Parts may have previously been sold as ACDelco GM Original Equipment, so you're getting the exact same quality you'd expect from the dealership. GM engineers specifically design and validate these parts for your Chevrolet, Buick, GMC, or Cadillac vehicle, and they regularly update production designs to incorporate new materials and technologies. I used this bearing in a transmission rebuild on a Silverado last month, and the fit and performance were perfect - no modifications or adjustments needed. When you're working inside a transmission, you don't want to gamble with aftermarket parts that might not hold up or could cause premature failure of other components. The peace of mind that comes with genuine GM parts is worth the investment, especially for something as critical as a transmission bearing. Whether you're a professional mechanic doing customer repairs or a skilled DIYer tackling your own transmission work, using OEM components ensures reliability and longevity. Don't risk transmission failure or costly comebacks with questionable aftermarket bearings - this GM Genuine Part delivers the quality and performance your vehicle was designed for from day one!