Husqvarna 531 30 95-80 HU46 46" Tractor Mulching Kit For 46 Decks (2-Bladed Deck; 2006 and Newer Models) Mulch Kit convert residential riding mowers to mulching units For air-induction decks Consists of a mulch plug, 2 mulching blades and mounting hardware Genuine Husqvarna Part # 531309580