The replacement rim sprocket for the Husqvarna chainsaws is listed below. Genuine Husqvarna product Model to Rim Guide 545, 555, 550 XP, 560 XP - .325" 7 Pin 365, 372XP,...
Bar nut retaining/captive style fits the following models:-
Genuine Husqvarna Part
545
555
T540 XP
T5365 LiXP
536 Lixp
550 XP/XPG
560 XP/XPG
Part no 505197301
Bar nut in the flange style with an M6 thread to fit onto the Husqvarna pole saws. Genuine Husqvarna part Models it Fits - 327, 525, 530iPX, 530iP4, 530iPT5, 536LiPX,...