This cylinder base joint gasket is a genuine Stihl part designed for TS400 disc cutters. It seals the connection between the cylinder and crankcase, providing a precise and reliable fit. Constructed from durable, heat- and fuel-resistant materials, it helps maintain proper compression while preventing air or fluid leaks. This gasket supports easy starting, stable engine performance, and long-lasting operation, making it an essential component for maintaining your TS400 disc cutter.