Description Pipe. For diesel engines. Tractors: 2000, 3000 (except 2300, 2310, 3300, 3310) (4/1969 & up). For gas engines. Tractors: 2000, 3000 (4/1969 & up), 2600, 3600 (1975 & up). This item is a suitable alternative for the following: C7NN5245B, FOE21, FOE-21, EC0N5245AA, AC7NN5245B, A-C7NN5245B