This aftermarket gearbox fits select John Deere mower deck applications and is part of the deck drive system. It replaces the deck gearbox that transfers drive power through the mower deck so the cutting system can operate properly. Built to match OEM This replacement gearbox is modeled after the current OEM-style gearbox design. It is built to match the factory-style form and function, with the housing and mounting layout intended to align with the deck gearbox location. Installation Installation is a standard mower deck gearbox replacement and should be handled with normal shop tools by someone comfortable working on deck drive components. Please note that because this gearbox follows the newest OEM-style design, some mower decks may require modification or the purchase of a newer mounting bracket for proper fitment. .product-description-v2 { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; color: #1d1d1d; line-height: 1.55; max-width: 720px; } .product-description-v2 > div { margin-bottom: 18px; } .product-description-v2 h3 { font-size: 16px; font-weight: 700; color: #1d1d1d; margin: 0 0 8px; } .product-description-v2 p { margin: 0; font-size: 15px; } @media (max-width: 768px) { .product-description-v2 { font-size: 15px; } }