Quality-Built 13788N Supreme Alternator Quality-Built Supreme Alternators are designed with your needs in mind Combines 100 percentage new housing and components with the advanced engineering, durability testing and root cause analysis of the Premium series Results in a line of 100 percentage new Alternators, engineered from the ground up to offer unsurpassed performance and dependability Comprehensive 2 year Roadside Assistance program Toll-free Quality-Built Technical Support Hotline staffed by ASE-certified master technicians for the customers