Troy Bilt Tiller Oil Seal part# 9622 superseeds to part# 921-04034. This oil seal is used on Horse, Ecno-Horse, and Pony model tillers on the wheel hi/low speed shaft. Some model numbers that this part is used on are listed here. 12055, 12056, 12057, 12058, 12153, 12174, 12181, 12182, 12204, 12211, 12212, 15008, 15009, 15010, and 15020. Price is per each.