ELITE GENUINE OEM HUSQVARNA 539105779 48 MOWER DECK SHELL FOR EARLY 2000′S ZERO-TURN MOWERS. REPLACES PART #’S. 539104610, 539104753 AND 539105724. This 48-inch deck assembly is used primarily on older commercial-grade Husqvarna rear-engine and zero-turn riding mowers manufactured in the early 2000s, including. Husqvarna iZ 4817 SKAA. Husqvarna iZ 4821 KAA. Husqvarna ZTH 4817 A.