This gearbox rebuild kit is an aftermarket replacement service kit for the gearbox system on compatible Scag mower applications. It is used when the gearbox needs to be opened up and rebuilt so the drive components can run properly without replacing the entire gearbox assembly. Built to match OEM The kit components are made to match the original gearbox application for proper fit with the existing housing and mating parts. Dimensions, seating surfaces, and finish are intended to follow the factory-style setup so the rebuilt gearbox goes back together correctly. Installation Installation requires removing and disassembling the gearbox, cleaning the parts, and inspecting the gears, shafts, and housing before reassembly. Standard hand tools are typically used, and a puller or press may be needed depending on how the old components come apart. No machine modifications are required when used on the correct application. .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; } }