Oregon 73-017 Snow Thrower Scraper Bar Replaces MTD 731-1033, 731-0778 And 731-0812 Replaces MTD part numbers 731-1033, 731-0778 and 731-0812 Fits models 191, 174, 180, 181, and 196 For snowthrowers made since 1988 4 mounting holes on 6-inch centers, Slotted holes- 1/4-inch by 1-inch Use with our 73-016 paddle