Oregon 98-069, BLADE MTD 14-13/16IN 742-0645 (1) 98-069 and (2) 98-054, for 46" cut - star center hole, center blade for 46" cut model series 600 and 800 built since 1997 Also Replaces: MTD: 742-0645, 7420645, 742-0646, 7420646, 942-0645, 9420645 Product Code:98069