OEM Replacement Belt / Ferris 5103390Pack Size:1Ferris 5103390, Simplicity 5103390, Simplicity 5103390YPFerris IS3100Z and IS4500Z series with 61" decks; Snapper Pro S200X zero turn with 61" decksType: Covered, Width: 5/8 ", Length: 172 3/4 "