SPROCKET FOR POWER SAWS COMPATIBLE WITH MODEL: 340 345 345 346 346XP 350 351 353 357 BELL INDEX: 68.5mm BORE INDEX: 15.5mm TOTAL HEIGHT: 16.5mm 1/4" 9 TEETH roller cage: 11893 self-aligning ring: 543767 HUSQVARNA CODE: 544682X ORIGINAL CODE: AT