Profile: Roy Supply Co., Inc. specializes in supplying and repairing starting & charging systems. The industries we serve include oil, gas and marine industries. Our electric starter includes Delco Remy™ units such as the 28MT and 42MT units. Bosch™, Nippondenso™, and Leece Neville™ starters are also available to cater construction and rental equipment customers. We also provide marine starters. Alternators includes Delco™ 10SI, 21SI, 27SI, 30SI and 33SI. These units are available in a wide variety of different amperages and voltages. We also provide high output units for emergency vehicles and 32 volt units for marine applications. We offer automotive alternators for Ford™, GM™ trucks, John Deere™, Cummins™ and Cat™ heavy equipments. We provide repair and rebuild services.