ORIGINAL chainsaw sprocket HUSQVARNA models: 340 - 345 - 346XP - 350 - 351 353 - 435 - 445 - 450 JONSERED models: 2141 - 2145 - 2149 - 2150 CS2141 - CS2145 - CS2147 CS2150 - CS2152 - CS2153 CS2245 - CS2245 II - CS2245 S CS2245 S II - CS2250 S - CS2250 S II MCCULLOCH models: CS450 CHARACTERISTICS: pitch 325" 7 teeth original code: 577035301