The GM 8V92 Water cooled Manifolds are a pair of high-quality boat parts manufactured by GM in the United States. These manifolds are designed to efficiently cool water and are sold as a set. Perfect for boat owners looking for reliable and durable engine components, these manifolds are a essential part of maintaining and improving the performance of your vessel. Made by a trusted brand known for quality boat parts, these manifolds are sure to meet the needs of any boating enthusiast.