Our 2025 Ultra Mini Alternator. The UltraMini Alternator is the smallest in our line. It weights only 6 Lbs. and has an output of 55 amps. When Mounted with our low mount brackets (2230 for BBC, 2231 for SBC) it will fit between 18 inch frame rails. When used with our 2232 (BBC) or 2233 (SBC) mid mount bracket, it will fit most stock chassis that do not have a motor plate. It is avaiable as a one wire or an ignition activated unit so it can be switched off or in a 16 Volt Model.