This is a A-187269M91 Muffler PN: 187269M91Main Description As Following : A-187269M91 Muffler P.N: 187269M91 Vertical / Round Body - 4 1/4" Shell DiameterDim A (1): A: 15" INLET LENGTHDim B (2): B: 2 3/16" INLET I.D.Dim C (3): C: 14 1/2" SHELL LENGTHDim D (4): D: 8" OUTLET LENGTHDim E (5): E: 2 1/4" OUTLET O.D.Dim F (6): F: 38" OVERALL LENGTH Crossed From: MF-2 STANLEY MUFFLER , 1217-2330 , Found in Section & Models : Mufflers/Exhaust Pipes > Mufflers, Massey Ferguson TRACTOR: 85 (W/ GAS & LP ENGINES 1958-1962), Massey Ferguson TRACTOR: 88 (W/ GAS & LP ENGINES 1958-1962) Associated Items : A-CL214, A-RC3 Also A-MH-O-MF85, A-MH-O-MF85DSL, A-MH-P-MF85MF88, A-MH-S-MF8588, A-SMMF201, A-MH-O-MF88, A-MH-P-MF85MF88, A-MH-S-MF8588, A-SMMF201 And : Vertical / Round Body - 4 1/4" Shell Diameter Dim A (1): A: 15" INLET LENGTH Dim B (2): B: 2 3/16" INLET I.D. Dim C (3): C: 14 1/2" SHELL LENGTH Dim D (4): D: 8" OUTLET LENGTH Dim E (5): E: 2 1/4" OUTLET O.D. Dim F (6): F: 38" OVERALL LENGTH