Replaces Part Number : AT16829 <. Inlet I.D. 2-1/8", Outlet O.D. 2", O/A Length 20", Inlet Length 2-1/2", Outlet Length 3-1/2", Shell Length 16". Call us toll-free at1-888-6PARTS6 (1-888-672-7876) or directly at517-347-7033.