One new aftermarket replacement muffler that fits Case IH Tractor models: F-20, F-30 (both gas engine) Fits Case IH Industrial/Construction models: TD18 (diesel engine), W30 (gas engine) Vertical/Round Body – 4 1/4″ shell diameter. Dimensions: Dimension A(1) A: 4 3/4″ Inlet Length Dimension B(2) B: 2 3/4″ Inlet ID Dimension C(3) C: 15″ Shell Length Dimension D(4) D: 6 1/2″ Outlet Length Dimension E(5) E: 2 3/4″ Outlet OD Dimension F(6) F: 26″ Overall Length Replaces Part Number: 264126R92 Models This part fits: F-20, F-30, TD18, W30 Reference Numbers: 264126R92