The product is designed for Ram 1500 trucks, both 2WD and 4WD models. The package includes 16 pieces, all brand new: 8 upper body mount polyurethane bushings and 8 lower body mount polyurethane bushings. These bushings play a crucial role in improving the vehicle's suspension and overall ride quality. When installing the kit, it's important to note that the original OEM bolts and washers need to be reused; there's no need for new hardware. However, before fitting the new bushings, it's recommended to thoroughly clean the upper and lower hardware to ensure proper installation and performance. To assure customers of the product's quality, AUTOACER offers a 5-year warranty that covers manufacturer-related defects. Being a U.S.-based company, AUTOACER stands behind their products, giving customers confidence in the durability and reliability of their purchase. This warranty lasts for five years from the date of purchase, providing long-term assurance of the product's performance.