The Dayco 5040450 Poly Rib Serpentine Belt is a genuine product manufactured in the United States. It is a direct replacement belt designed for specific vehicle models, offering free shipping without any core charge. This serpentine belt is made by Dayco, a trusted brand known for producing high-quality automotive belts. With a variety of interchange part numbers from various car manufacturers, this product ensures a perfect fit and reliable performance for your vehicle.