Vertical muffler for gas tractors. Fits short clearance muffler for tobacco or grove application engines: C113. C123. C135. Inlet I.D. 1-15/16″. outlet O.D. 2″. length 18″. diameter 4-1/4″ round body. Tractors: A. AV. Super AV. B & BN. C. Super A-1 & A.