This is a A-182609M91 MUFFLER PN: 182609M91Main Description As Following : A-182609M91 MUFFLER P.N: 182609M91 Vertical or Horizontal/Round Body - 3 1/4" Shell DiameterDim A (1): A: 2 1/2" INLET LENGTHDim B (2): B: 1 15/16" INLET I.D.Dim C (3): C: 15 1/2" SHELL LENGTHDim D (4): D: 2" OUTLET LENGTHDim E (5): E: 1 3/8" OUTLET O.D.Dim F (6): F: 18 1/2" OVERALL LENGTH Crossed From: EM182609 , , MF-11 STANLEY MUFFLER , 1217-2302 , Found in Section & Models : Mufflers/Exhaust Pipes > Mufflers, Massey Ferguson TRACTOR: F40 (W/ GAS OR LP ENGINES 1957-1964), Massey Ferguson TRACTOR: 2200, Massey Ferguson TRACTOR: 2500, Massey Ferguson TRACTOR: 50 (W/ GAS OR LP ENGINES 1957-1964) Associated Items : A-CL112, A-CL200 Also A-SMMF14, A-FRM-MH, A-MH-O-MF5065, A-MH-P-MF50, A-MH-P-MF50IND, A-MH-S-MF100LDR, A-MH-S-MF3550, A-SMMF14 And : Vertical or Horizontal / Round Body - 3 1/4" Shell Diameter Dim A (1): A: 2 1/2" INLET LENGTH Dim B (2): B: 1 15/16" INLET I.D. Dim C (3): C: 15 1/2" SHELL LENGTH Dim D (4): D: 2" OUTLET LENGTH Dim E (5): E: 1 3/8" OUTLET O.D. Dim F (6): F: 18 1/2" OVERALL LENGTH