Throttle Trigger Lockout Lock Kit For Husqvarna 350 345 340 346XP 353 359 357XP Chainsaw Replacement Tool Part For Husqvarna 350 345 340 346XP 353 359 357XP chainsaw parts Replace OEM for 503854501, 503854401 Package include 1 x Throttle Trigger, 1 x Throttle Lockout