This idler pulley has an overall diameter of 4-3/4" and works best a belt tension idler

Murray 7701014MA Trimmer Belt

Replaces 52 584 01-S

Murray 328369MA Assembly PTO Bracket Cable 39"

Efco 50050020R Oil Pump Part Type_Electric Screwdrivers This idler pulley has anKeep your outdoor equipment performing at its best with high quality Efco replacement parts. Designed for a wide range of tools including blowers, lawn mowers, chainsaws, hedge trimmers, edgers, water pumps, and more these parts provide the durability and precision you need to keep your machines running like new. Each Efco replacement component is engineered to meet demanding performance standards, ensuring a reliable fit and long lasting service