The product is a Genuine OEM spring made by ACDelco, specifically designed for GM vehicles. It is a New Old Stock (NOS) item, ensuring its quality and compatibility with the specified vehicle models. Made in the USA, this spring is a reliable and durable component for your car or truck, providing the necessary support and performance for a smooth ride. With the ACDelco brand reputation for excellence, this spring is a trusted choice for maintaining the optimal condition of your vehicle.