Description Vertical muffler only. Inlet 1-5/8" I.D. outlet 1-3/4" O.D. 34" overall length. For 144 & 152 CID 3-cyl diesel Perkins engines. Tractors: Dexta, Super Dexta (prior to 1964). This item is a suitable alternative for the following: 957E5230D, FO-2, FO2, S.6303, S6303