Enhance your driving experience with this high-quality ACDelco GM Original Equipment switch assembly for your 2011-2012 Buick Regal. This durable window master switch, with OE/OEM part number 20912823, is perfect for controlling your car's front left door window. The switch comes in a sleek black color and is manufactured in China. This switch assembly is specifically designed to fit your Buick Regal and is a great replacement part for your car. It is easy to install and offers reliable performance. Don't miss out on this opportunity to upgrade your car's interior with this top-quality switch assembly.