Case Tractor Muffler & Clamp. Inlet: 1 15/16″ ID, Outlet:2″OD. Overall Length: 29″ This Muffler fits a bunch of CASE Tractors starting with the “V” Series, and all the way up through the 600B. All Gas. This replaces VTA2811 & VTA1135. Some inlets were smaller, 1 5/8″ ID. We have those mufflers also.