The Denso Hairpin 180 Amp HP series high output alternator produces 180 amps at 1800 engine RPM and 120 amps continually at low idle while capable of up to a 75% generation efficiency. The rectifier is mounted onboard the alternator and consists of 12 40 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 components have been carefully chosen for maximum performance and reliability in Dodge Ram vehicles with the engine.