The EGO Snow Blower Belt is the only replacement belt approved for use with the EGO POWER+ 21-inch Auger-Propelled Snow Blower (SNT2120AP). The belt on your snow blower must be in good condition for optimal performance. Snow blower belts can wear or break under load; it is important to replace the belt when it begins to show wear. Genuine EGO parts like the Snow Blower Belt are designed specifically for your EGO POWER+ products and offer the highest quality, performance, and value.