Features APPLICABLE MODELS: This engine stop switch is used for Husqvarna 361, 365, 371, 371xp, 372, 372xp, 336, 385, 390 chainsaws, widely compatible. REPLACEMENT OEM: The replacement OEM part numbers of these flameout switches are 503717901, 503718201 for your reference. PREMIUM PLASTIC: The chainsaw kill stop switch is made of premium plastic material, which is sturdy and not easy to be damaged. SIMPLE INSTALLATION: The on off stop switch is easy to install and use, which can be quickly installed and directly operated. PROFESSIONAL PART: This switch set is professionally manufactured and designed specifically to replace the original switch on the chainsaw. Specification: Item Type: Chainsaw Kill Switch Material: Plastic Applicable: for 362 365 371 372 372xp 61 66 261 262 266 268 272 272XP 281 288 chainsaw engine motor Package List: 4 x Chainsaw Kill Switch Package List 4 x Chainsaw Kill Switch