The genuine Stihl plug (OEM part number 1132 791 7300) is an essential sealing component designed specifically for Stihl top-handle chainsaws, including the MS 191 T and MS 190 T models. Crafted from durable, oil- and fuel-resistant material, this plug effectively replaces any missing, cracked, or perished seals, ensuring that your chainsaw remains properly sealed as per manufacturer specifications. By using the Stihl plug, you can prevent dust and moisture from entering critical housings and passageways, which is vital for maintaining smooth operation and extending the service life of your chainsaw. Ensure your equipment runs efficiently with this reliable replacement part.