ACDelco Gold (Professional) Wheel Bearings are the high quality alternative to Original Equipment (OE) parts. Wheel bearings support the weight of the vehicle and are lubricated with gear oil or wheel bearing grease. 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.