Mercury - Carburetor Fuel Filter Fuel System Protection Stainless Mesh & Composite 8767T. Overview. Every boater knows the feeling of settling in behind the wheel, hearing the engine come alive, and trusting that everything beneath the cowling is doing exactly what it should. That confidence isn't luck-it comes from small but essential parts working quietly in the background. The Mercury 8767T Carburetor Fuel Filter is one of those parts you don't think about until you need it, and once you've r