This high-quality gasket is designed to fit Omnicraft Mercruiser engines with precision and accuracy. Made by PROMARINE, a trusted brand in the marine industry, this gasket is a reliable solution for your boat's exhaust system. The manufacturer part number for this gasket is 18-2909 3853412 27-99757, and it is made in the United States. Whether you're a professional mechanic or a DIY enthusiast, this gasket is a must-have for anyone looking to maintain their boat's sterndrive motor. It is compatible with a wide range of Omnicraft Mercruiser engines, so you can be sure it will fit your boat perfectly. Don't miss out on this essential part for your boat's exhaust system.