This is a A-181867M1 Muffler PN: 181867M1Main Description As Following : A-181867M1 Muffler P.N: 181867M1 Vertical Or Horizontal / Round Body - 4 1/4" Shell DiameterDim A (1): A: 3" INLET LENGTHDim B (2): B: 1 7/8" INLET I.D.Dim C (3): C: 17" SHELL LENGTHDim D (4): D: 14 1/2" OUTLET LENGTHDim E (5): E: 2" OUTLET O.D.Dim F (6): F: 34" OVERALL LENGTHReplaces: 181867M91 Replaces: 181867M91 MASSEY FERGUSON , Crossed From: MF-10 STANLEY MUFFLER , 1217-2301 , , 181867M91 , Found in Section & Models : Mufflers/Exhaust Pipes > Mufflers, Massey Ferguson INDUSTRIAL/CONSTRUCTION: 202 (W/ GAS OR DIESEL ENGINE), Massey Ferguson INDUSTRIAL/CONSTRUCTION: 203 (W/ GAS OR DIESEL ENGINE), Massey Ferguson INDUSTRIAL/CONSTRUCTION: 204 (W/ GAS OR DIESEL ENGINE), Massey Ferguson INDUSTRIAL/CONSTRUCTION: 205 (W/ GAS OR DIESEL ENGINE), Massey Ferguson TRACTOR: 135 (W/ GAS OR DIESEL ENGINE 1964-1974), Massey Ferguson TRACTOR: 35 (W/ GAS OR DIESEL ENGINE 1960-1964) Associated Items : A-CL178, A-RC2 Also This is An Aftermarket Product And : Dim A (1): A: 3" INLET LENGTH Dim B (2): B: 1 7/8" INLET I.D. Dim C (3): C: 17" SHELL LENGTH Dim D (4): D: 14 1/2" OUTLET LENGTH Dim E (5): E: 2" OUTLET O.D. Dim F (6): F: 34" OVERALL LENGTH Replaces: 181867M91