This MTC 50016/313080 Transom Seal is a perfect fit for OMC 313080 Sierra 18-2767 Mallory 9-7. It is designed to provide a reliable and efficient seal for your outboard engine's cooling system. The brand of this seal is Sierra and it is made of high-quality materials to ensure durability and longevity. This product is a must-have for anyone who wants to maintain their outboard engine's cooling system. It is compatible with a wide range of outboard engines and is easy to install. So, if you want to keep your engine running smoothly, this MTC 50016/313080 Transom Seal is the perfect choice for you.