264126R92 New Vertical Round Muffler Fits Case-IH Tractor Models W30 TD18 +One New Aftermarket Replacement Muffler that Fits Case IH Tractor Models: F 20, F 30 (both with Gas Engine) Fits Case IH Industrial Construction Models: TD18 (with Diesel Engine), W30 (with Gas Engine) Vertical Round Body 4 1 4" Shell Diameter. Dimensions: Dim A (1) A: 4 3 4" Inlet Length, Dim B (2) B: 2 3 4" Inlet Inside Diameter, Dim C (3) C: 15" Shell Length Dim D (4) D: 6 1 2" Outlet Length, Dim E (5) E: 2 3 4" Outlet Outside Diameter, Dim F (6)