MTD Parts has the original replacement mower deck for your push mower, riding mower or RZT Zero-turn mower. Available in all colors, sizes and widths, including 20-inch, 21-inch, 28-inch, 30-inch, 33-inch, 38-inch, 42-inch, 46-inch, 50-inch and 54-inch. Can't find the exact deck you need? Use our Parts Diagrams Tool to lookup the part for your specific machine.