The STIHL Genuine 066 MS 660 Fuel Tank Assembly is a high-quality replacement part designed specifically for STIHL chainsaws. Made of durable plastic, this fuel tank is compatible with the 2-stroke engine type and operates on gasoline. With no assembly required, it is a convenient and reliable choice for keeping your chainsaw powered up. Made in the United States, this fuel tank assembly is a genuine STIHL product, ensuring a perfect fit and long-lasting performance for your outdoor power equipment needs.