Keep your battery banks charged with a reliable marine diesel alternator from our diesel engine alternator collection. Marine diesel alternators are ignition-protected, built for the corrosive marine environment, and available in high-output configurations for vessels with heavy electrical loads. Whether you're replacing a failed alternator or upgrading to a higher-output unit, Go2marine carries marine diesel alternator options for popular Yanmar, Volvo, Cummins, and other marine diesel applications. Browse our collection.