The Alpina 4561380 starter pulley is a genuine replacement component designed for a range of garden machinery engines, commonly found in Alpina, Stiga, Castelgarden, and Mountfield equipment. This essential part ensures the proper function of the recoil starter mechanism. Manufactured to OEM specifications, it features a diameter of 58 mm and a height of 23 mm, providing reliable and consistent performance. This pulley is also cross-referenced with OEM part numbers 18550100/0 and 18550100/1.