ACDelco Gold (Professional) Coil Spring Sets are a high quality alternative to Original Equipment (OE) parts. These sets contain cylindrical spiral shaped springs made from special steel wire. These coiled spring sets also include a variable rate rear and constant rate front coil springs, which work with your vehicle's suspension system to absorb the vertical motion of the wheels when driving over uneven surfaces. 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.