D6NN9601A Years:1965&Up Outer Air Filter. Fits Ford Tractors:230A, 231, 233, 2600, 333, 335, 340A, 340B, 34B, 3600, 3900, 4100, 445, 445A, 445C, 445D, 450, 4600, 515, 530A, 531, 532, 540, 540A, 540B, 545, 545A, 545C, 545D, 550. Replaces Ford Part Numbers: 83908364, E6NN9601A.