Fitment:Fit for John Deere X300 with 48c mower decks. X320 with 48in rotatable mower decks beginning with serial number 040001-. X320 with 54in mower decks. X324 with 48in rotatable mower decks beginning with serial number 040001-. X340 with 54in mower decks beginning with serial number 045000-. X360 with 48in mower decks X500 48in rotatable mower decks, X500 with 54in mower decks, X520 with 48in rotatable mower decks, X520 with 54in mower decks, X530 with 54in mower decks, X534 with 48in rotatable mower decks, X534 with 54in mower decks, X540 with 48in rotatable mower decks, X540 with 54in mower decks, X590 with 54in mower decks X300 Series:?? X300 with 48c mower decks?? X320 with 48in rotatable mower decks beginning with serial number 040001-?? X320 with 54in mower decks?? X324 with 48in rotatable mower decks beginning with serial number 040001-?? X340 with 54in mower decks beginning with serial number 045000-?? X360 with 48in mower decksX500 Series:?? X500 with 48in rotatable mower dec