This replacement blower fan is manufactured to strict standard specifications, with optimized blade quantity and aerodynamic angle to match the airflow needs of 38cc gas-powered backpack blowers. It can directly replace worn or damaged fan components without modification or extra tools. Constructed from high-strength engineered plastic, it features strong impact resistance and long-term durability against outdoor conditions. The precision-machined shaft ensures stable high-speed rotation, effectively restoring air output and overall equipment performance for outdoor cleaning and blowing applications.