This Litens pulley is manufactured by one of the largest original equipment pulley suppliers to ensure proper fit and performance. This pulley is produced for serpentine belt routing applications and conforms to original equipment material, tolerances, and specifications. This replacement part is made to the O.E. specified design and meets all performance and durability requirements. This Heavy duty Steel pulley is specifically designed for G.M. applications. Assembly includes: new pulley, new mounting bolt, front new dust cover/washer, and new rear dust cover.