Radial Seal Inner Air Element Fits_Inside: RS3549, RS3988 Fits: Bobcat, Case-International, Caterpillar, John Deere, Kubota, Mustang, Terex, Timberjack Equipment Replaces: Case 133721-A1; Melroe-Bobcat 6666334; Owatonna 42035599 O.D.: 3 5/16 (84.1) I.D.: 2 15/32 (62.7) One End Length: 11 31/32 (304.0)