Radial Seal Inner Air Element Fits_Inside: RS3870, RS4638 Fits: Caterpillar, Hitachi, John Deere, Terex, Volvo Equipment Replaces: Terex 15270189; Volvo 11033997-5 O.D.: 7 1/16 (179.4) I.D.: 5 11/16 (144.5) One End Length: 19 31/32 (507.2) Related to: RS4639 (with Flame Retardant Media)