Universal muffler. Reversible design. 2.25" Offset Inlet/ 2.25" Center Outlet, 4" x 9.5" Oval, 19" Long Body, 24" Overall Length Un-Notched necks are designed for weld in installation. If clamping, use 3" wide band clamps 18003. Alternate muffler with Notched necks is 400483. Use 1" wide band clamps 18322. See below for additional Product Features & Benefits