Up for sale is a NOS GM right vent window regulator, part #4648478, correct for 1954–1956 Buick 2-door models (including Roadmaster) and Cadillac 2-door models. This is an authentic factory-issued GM part, not a reproduction, manufactured for use on vehicles equipped with manual vent window operation.
This piece was sourced from a closed dealership’s parts inventory and has been stored for decades in its original Buick GM box. While the regulator shows light signs of age, it has never been used and remains in excellent structural condition.
Perfect for a proper restoration or as a replacement to ensure smooth and correct vent window function. These regulators are increasingly hard to find in NOS condition with the original packaging.
Additional InformationWe are open to any questions about this part, including requests for additional photos or fitment verification. We take pride in fast shipping, careful packaging, and helping keep classic GM cars on the road.
