This Toro replacement belt helps ensure optimum performance on your Toro 21” Power Clear® Snowthrower. In order for your snowthrower to continue to clear snow effectively, the belt must be in good condition. Since your snowthrower belt can wear or break under load, it is essential to replace when it begins to show wear or fatigue. Genuine Toro parts are designed specifically for your machine and offer quality, performance and value.