This genuine Holmer 1017020903 alternator is a high-performance electrical component designed for Holmer agricultural machinery, specifically compatible with models equipped with Mercedes-Benz OM 501 LA engines. It delivers a robust 28V output with a 150A current rating, ensuring reliable power generation for all onboard electrical systems. This alternator is a direct replacement for the original unit in Holmer Terra Dos T3, Terra Dos T4, Terra Felis 2, and Terra Felis 3 machines. It is also cross-referenced with the Bosch 0986039790 and multiple Mercedes-Benz OEM part numbers, guaranteeing precise fitment and optimal performance.