Struggling to keep up with heavy electrical demand on your boat? This 150 Amp Alternator is built for Indmar Marine Engines, delivering high-output charging power for navigation electronics, stereos, livewell pumps, and lighting without draining your battery. It replaces DELCO 8400013 and 8600002, and INDMAR 575014. Reliable performance that keeps your electrical system running strong, from Denparts.