Mercury - Manifold - 882553. The Mercury Manifold - 882553 is a genuine OEM replacement part designed to support efficient exhaust flow in Mercury marine engines. Engineered for optimal durability and performance, this exhaust manifold is built to handle high temperatures and corrosive marine environments-helping preserve engine integrity and power output over time.. Key Features. Original Mercury Marine Part - Designed to match exact factory specifications for proper fit and function. Efficient