The ARCO 60104 Alternator fits Motorola 12 Volt, 55 Amp applications. Internal regulator, negative ground, 1 mounting foot, and single-groove pulley included. It replaces the following part numbers: Crusader 39049, Crusader 39064, and WESTERBEKE 42847. All alternators are engineered for performance and reliability. All alternators are engineered and manufactured with precision and quality. All alternators must meet or exceed OEM performance before being boxed.
