The John Deere SE501823 is a genuine OEM 12-volt, 100-amp alternator designed to provide reliable power generation for a wide range of John Deere agricultural and construction machinery. This high-quality component ensures consistent electrical system performance and is engineered to meet the exact specifications of John Deere equipment, offering durability and optimal fitment for models such as the 5085M, 5090M, 5100M, 5100R, 5115M, 5115R, 6105M, 6115M, 6125M, 6130M, 6140M, 6145M, 6150M, 6155M, 6170M, 6175M, 6195M, 6R Series Tractors, and certain excavators and loaders. It replaces previous part numbers such as RE509053, RE509053R, RE509053RE, RE525281, RE525281R, RE525281RE, and RE546051.