The Stihl OEM Retainer is an essential component for Stihl petrol chainsaws, specifically designed for models MS 231 and MS 251. Crafted from durable metal, this retainer ensures that mating parts within the chainsaw remain securely in place during operation. With its precise fit to Stihl specifications, the Stihl OEM Retainer helps maintain smooth operation, minimizes unwanted movement, and supports the overall structural integrity of your chainsaw. Trust this genuine Stihl part to keep your equipment running efficiently.