Oregon 20" Guide Bar & Chain for Husqvarna Chainsaw. Fits Husqvarna Models - 40, 41, 42, 45, 50, 51, 55, 57, 142, 154, 242XP, 246, 254, 254XP, 257, 261, 262, 339, 340, 345, 346, 346XP, 350, 351, 353, 357, 357XP, 359, 360, 362XP, 455, 455e Rancher, 535FBX (Clearing Saw), 545, 550, 550XP, 555, 560XP.