The Large Case Denso Hairpin 300 Amp XM Cast Case series Custom Billet Aluminum high output alternator is a component of a next generation high efficiency, severe duty charging system specifically engineered for Nations. This system consists of a 300 Amp alternator and internal regulator. The alternator produces a maximum of 300 amps and will produce a minimum of 170 amps continually at low idle speeds and maximum output above 1800 engine RPM. The alternator has a maximum efficiency in excess of 75 percent. The rectifier is mounted onboard the alternator and consists of 12 50 amp press fit diodes. The brush holder assembly and slip ring are environmentally protected and the bearings are heavy-duty, oversized premium bearings. The alternator housings are precision-machined cast aluminum and all components are of OEM quality. All major components being carefully chosen for maximum performance and reliability.