ACDelco Gold (Professional) Suspension Knuckle Bushings are a high quality alternative to Original Equipment (OE) parts. These bushings serve as a mounting point for your vehicle's steering knuckle and connecting chassis parts. These professional-grade bushings are constructed of rubber, or metal and rubber, for long life and durability. ACDelco Gold (Professional) parts are manufactured to meet your expectations for fit, form, and function, making them a smart choice for General Motors vehicles, as well as most makes and models, including special applications. These high-quality parts are backed by General Motors. Some ACDelco Gold parts may have formerly appeared as ACDelco Professional.