(1) One New Aftermarket Replacement Muffler Fits John Deere Models: 840, 940, 1040, 1140, 1350 (S/N 621999 and Prior), 1550 (S/N 621999 and Prior), 1750 (S/N 621999 and Prior), 1850 (S/N 621999 and Prior), 1850N (S/N 621999 and Prior), 2155 (S/N 621999 and Prior) Technical Information: Body Type: Oval Clamp Not Included Inlet: 2 1/4″ Length: 14 3/4″ Material: Steel Outlet: 2 1/4″ Type: Underhood Replaces Model Numbers: AL31552 Reference numbers: AL31552