Package Quantity As Shown In Image Depending on the type of bushing, different materials such as rubber and polyurethane can be used in the design of the product. Many of the Mevotech X Factor bushings use polyurethane components in their design, providing enhanced corrosion resistance and an overall smoother ride for the driver. Alternate/OEM Part Number(s): K8801 Closeout Inventory Warranty Information Wholesaler Closeout items have a 30 day warranty (but still are covered by our Return Policy). MEVOTECH Regular Inventory Warranty Information Five (5) year or 100,000 km limited warranty. Strut Mounts 12 month, 20,000 km.