High-quality aftermarket R114157 cylinder gasket designed for Stihl MS290, MS310, and MS390 chainsaws. This replacement gasket ensures a proper seal between the cylinder and crankcase, crucial for engine compression and performance. It serves as a direct replacement for Stihl OEM part numbers 11270292300, 11270292301, and 11270292302, providing a reliable and cost-effective solution for maintenance and repair of Stihl chainsaw engines.