This is a A-70234493 Muffler PN: 70234493Main Description As Following : A-70234493 Muffler P.N: 70234493 Vertical / Round Body - 3 1/4" Shell DiameterDim A (1): A: 3" INLET LENGTHDim B (2): B: 3" X 4 1/8" BASE PLATEDim C (3): C: 16 1/2" SHELL LENGTHDim D (4): D: 6 1/2" OUTLET LENGTHDim E (5): E: 2 1/4" OUTLET O.D.Dim F (6): F: 26" OVERALL LENGTH Replaces: 234493 ALLIS CHALMERS , Crossed From: AC-6 STANLEY MUFFLER Found in Section & Models : Mufflers/Exhaust Pipes > Mufflers, Allis-Chalmers TRACTOR: D15 (W/ DIESEL ENGINE - SN <9001), Allis-Chalmers TRACTOR: D17 (W/ DIESEL ENGINE - SN <38964) Associated Items : A-RC5 Also A-AC-O-D15DSL, A-AC-O-D15GAS, A-AC-O-D15IIGD, A-AC-O-IMPLHITCH, A-AC-O-MARKTEN, A-AC-O-RL451, A-AC-P-D15, A-AC-S-D15, A-AC-S-FUELINJ, A-FRM-ACCACO, A-SMAC201, A-AC-O-D17DERLY, A-AC-O-D17DSL, A-AC-O-D17GAS, A-AC-O-D17III, A-AC-O-D17IV, A-AC-O-D17MID, A-AC-O-IMPLHITCH, A-AC-O-MARKIVANDV, A-AC-P-D17 And : Vertical / Round Body - 3 1/4" Shell Diameter Dim A (1): A: 3" INLET LENGTH Dim B (2): B: 3" X 4 1/8" BASE PLATE Dim C (3): C: 16 1/2" SHELL LENGTH Dim D (4): D: 6 1/2" OUTLET LENGTH Dim E (5): E: 2 1/4" OUTLET O.D. Dim F (6): F: 26" OVERALL LENGTH