This is a A-637661C1 Muffler PN: 637661C1Main Description As Following : A-637661C1 Muffler P.N: 637661C1 Vertical / Round Body - 6" Shell DiameterDim A (1): A: 3 1/2" INLET LENGTHDim B (2): B: 3 1/8" INLET I.D.Dim C (3): C: 14 1/2" SHELL LENGTHDim D (4): D: 3 1/2" OUTLET LENGTHDim E (5): E: 3" OUTLET O.D.Dim F (6): F: 22" OVERALL LENGTH Crossed From: IH-12 STANLEY MUFFLER , 1717-3405 , , 264116R92 , Found in Section & Models : Mufflers/Exhaust Pipes > Mufflers, Case-IH INDUSTRIAL/CONSTRUCTION: TD14 (W/ DIESEL ENGINE), Case-IH INDUSTRIAL/CONSTRUCTION: TD9 (W/ DIESEL ENGINE), Case-IH INDUSTRIAL/CONSTRUCTION: T9 (W/ GAS ENGINE), Case-IH TRACTOR: WD9 (W/ DIESEL ENGINE), Case-IH TRACTOR: W9 (W/ GAS ENGINE), Case-IH TRACTOR: 600 (INTERNATIONAL W/ C-350 GAS OR D-350 DIESEL ENGINE), Case-IH TRACTOR: 650 (INTERNATIONAL W/ C-350 GAS OR D-350 DIESEL ENGINE) Associated Items : A-CL314, A-RC4 Also This is An Aftermarket Product And : Vertical / Round Body - 6" Shell Diameter Dim A (1): A: 3 1/2" INLET LENGTH Dim B (2): B: 3 1/8" INLET I.D. Dim C (3): C: 14 1/2" SHELL LENGTH Dim D (4): D: 3 1/2" OUTLET LENGTH Dim E (5): E: 3" OUTLET O.D. Dim F (6): F: 22" OVERALL LENGTH