Description Horizontal muffler & pipe, one-piece welded assembly. Tractors: 9N, 2N, 8N (1939-1952). This item is a suitable alternative for the following: 8N5230, 856-FO3, 856FO3, A8N5230, FO-3, FO3, S.60445, S60445, A138883, A-8N5230