No. most dealers install an OEM branded rebuilt. Almost impossible to buy a brand new dealer alternator or starter after about the second year of production. Most dealers will only install third party parts if the OEM brand parts are not available, TERRIBLY overpriced, or having reliability problems. There is always the odd idiot dealer principal who will buy parts from the jobber to save a buck, not realizing he is putting all the profit into someoe elses till when he could be putting it in his own. The same guy who sends his used cars down the street for a safety check because the corner garage only cherges him $50 when his own service department charges him $55. Meanwhile, his mechanics are sitting on their asses, drinking his coffee while he pays to heat, light. and maintain an empty shop.