R54503 Flywheel Ring Gear Fits John Deere Industrial 9930 7445 7450 550 555One New Aftermarket Replacement Flywheel Ring Gear Fits John Deere Cotton Picker Model: 9930 Also Fits John Deere Cotton Stripper Models: 7445, 7450 Also Fits John Deere Industrial Construction Models: 340B, 410B, 410C, 410D, 415B, 510B, 510C, 510D, 515B, 550, 550A, 550B, 555, 555A, 555B, 610B, 610C, 640, 640E, 710B, 710C, 710D Also Fits John Deere Skidder Models: 440C, 440D, 448D, 540B, 540D, 540E, 540G, 548D, 640D, 640G, 648D Tech Info: Dim A (1)