Mercury - Quicksilver 65-Amp Alternator For 1993-1996 GM V8 Marine Engines with V-Belt 805884T. Overview. When your boat's electrical system starts to struggle - dim lights, slow starts, or weak battery charging - it's usually your alternator telling you it's time for a change. The Mercury Marine 805884T Quicksilver 65-Amp Alternator gives your classic GM V8 marine engine (350, 454, or 502 EFI) the strong, steady power it was built for. Designed for 1993-1996 engines with a V-belt pulley, this a