The Hendrickson Piloted Hub W/A, part number S-23593-21 or S2359321, is a genuine Hendrickson suspension component designed as a direct-fit replacement for heavy-duty truck suspension systems. Hendrickson is a recognized name in commercial vehicle suspension, and this hub assembly is built to that standard. Pro Gear and Transmission carries genuine Hendrickson parts for fleet maintenance managers and truck mechanics who need the right part the first time. Call us to confirm proper fitment for your specific application before ordering.FeaturesGenuine Hendrickson Piloted Hub W/APart number S-23593-21 or S2359321Designed for heavy-duty truck suspension applicationsDirect-fit replacement hub assemblySold by Pro Gear and Transmission