Mfr: Balmar - 97EHD-190-24; Extra-Large Case 97EHD-Series Alternators are appropriate for large diesel applications such as Caterpillar, Cummins, MTU and John Deere to service extensive house battery loads. Designed for Extended Duty Operation Case Ground or Isolated Ground ...Mfr: Balmar - 97EHD-190-24; Extra-Large Case 97EHD-Series Alternators are appropriate for large diesel applications such as Caterpillar, Cummins, MTU and John Deere to service extensive house battery loads. Designed for Extended Duty Operation Case Ground or Isolated Ground Terminations Available Bi-Directional Cooling Fan Maximum Speed: 7,000 RPM External Regulation Required USCG Title 33 Compliant