ACDelco Gold (Professional) Rack and Pinion Bellows Kits are a high quality alternative to Original Equipment (OE) parts. These bellow kits are installed on each side of your vehicle's rack and pinion steering system, helping protect the rack from exposure to water, debris, and other potentially damaging contaminants. 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.