One New Aftermarket Replacement Vertical Oval Muffler Fits International Tractor Models: I-454, 574, 674 (C-200 Gas or D-239 Diesel) Tech Info: Vertical/Oval Housing – 4 1/2″ X 9″ Shell Dimensions Overall Length: 30″ Shell Diameter: 4-1/2″ x 9″ Shell Length: 19″ Intake ID: 2-3/8″ Intake Length: 3-1/2″ Outlet ID: 2″ Outlet Length: 9-1/2″ Replaces Part Numbers: 533924R1, IH-24 Models This part fits: 574, 674, 684, I-454 Reference Numbers: 403551R1, 403551R1-A, 533924R1, 533924R1-A, IH-24