-- Specifications & Features -- Type: Tractor Square Tube Wide Front Axle Assembly. Make: John Deere Casting Numbers: A 4963 R, 4990R, R 93577. -- Seller Statement -- -- Contact -- Specialist: Zak Bontrager, 260-221-2628. General Inquiries, Payment, Bidding Direction, Registration, and Loadout: Main Office, (574) 825-0704. Financing: 1 (833) 458-6210.