This genuine Stihl 61187008500 engine housing (carter moteur) is an original equipment manufacturer (OEM) replacement part designed for Stihl MS 170, MS 170 C, MS 180, and MS 180 C series chainsaws. Constructed to Stihl's exacting standards, this housing ensures a precise fit and reliable performance, critical for the proper function and protection of the chainsaw's internal components. It is a direct replacement for the original housing, maintaining the integrity and durability of your equipment.