Exhaust Coupling for CAT 3408B / C9 Engines – 9N-1940

Exhaust Coupling to suit Caterpillar (CAT) equipment, part number 9N-1940 (also written 9N1940). Cat catalogue name: 129.79mm OD Adapter Exhaust Tube (Coupling). Exhaust coupling / flexible connector that joins exhaust components and absorbs engine vibration and thermal expansion. Fits: 3408B, C9. Specifications: OD 131.98mm (5.2 in); carbon steel. Engines: 3406, 3406B, 3406C, 3406E, 3408, 3408B, C9, C11, C13, C15, C18, C27, C32. Please confirm your machine serial number or the part number on your old part before ordering.