This is an aftermarket replacement gearbox for compatible John Deere mower deck drive systems. It transfers power through the deck gearbox to keep the cutting drive operating as intended when the original gearbox is worn, leaking, noisy, or failed. Built to match OEM This gearbox is made to match the original fit and function for the compatible deck applications. Mounting points and shaft interfaces are built to align with the factory layout, so the replacement installs in place of the original assembly without changing the deck design. Installation Installation is intended to be a direct bolt-up replacement when used on a compatible machine and deck. Use standard shop tools, follow the service manual for belt, pulley, and blade drive removal, and check lubricant requirements before putting the deck back into service. .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; } }