Mercury - Fuel Filter Fuel System Component Filter Assembly with Gaskets 49088T2. Overview. Fuel that's even slightly dirty can cause all kinds of trouble - from hard starts to power loss. The Mercury Marine 49088T2 Fuel Filter helps keep your fuel clean so your MerCruiser 4- or 6-cylinder engine runs the way it should. Designed for models with a Rochester 2-barrel carburetor and Carter fuel pump, this filter traps water and fine debris before they can reach the carb or pump. It's an easy swap u