One New Replacement Exhaust Muffler for: Fits Ford/New Holland Tractor Models: 800, 801, 900, 901, 4000, 4030, 4031, 4110, 4120, 4121, 4130, 4131, 4140 Fits Ford Hay Equipment Model: 530 Fits Ford 144 cid Diesel Engines: 501 (1958 – 1962), 601 (1958 – 1962), 701 (1958 – 1962), 2000 Series (1963 – 1964) Fits Ford Industrial Models: 1801, 1811, 1821, 1841, 1871, 1881 Fits Ford Orchard and Narrow with 3 Cylinder Diesel: 3600 (1975 – 1981), 4000 (1965 – 1975), 4600 (1975 – 1981) Horizontal Exhaust Muffler. Round Body. For 172 CID Gas Engines. Vertical Exhaust for 144 CID Diesel Engines. Can convert 1953 – 1964 (134 and 172 CID) engines to use 310079 Muffler, 310075 Exhaust Elbow, and matching 1-3/4″ ID Exhaust and Extension Pipes. Dimension A(1)A: 2″ Inlet Length Dimension B(2)B: 2″ Inlet ID Dimension C(3)C: 13 1/2″ Models This part fits: 1801, 1811, 1821, 1841, 1871, 1881, 2000, 2000 Series, 3000, 3600, 4000, 4030, 4031, 4110, 4120, 4121, 4130, 4131, 4140, 501, 530, 601, 701, 800, 801, 900, 901 Reference Numbers: 15289T, 164203, 310079, 310079-A, 310079GV, 9613632, 9613634DS, A310079, A492777, AM310079, Exhaust Silencers, Exhaust Pipes, FO-14, FO-14-A, PM15289T, R1061