I don’t know anything about this gearbox. It maybe for another brand mower. I have included everything I can find about it, including detailed pictures. The Grasshopper Mower Deck Gearbox Model# LHKJ40758 is a high-quality, silver-colored gearbox designed for zero-turn lawn mowers. Made by the trusted brand Grasshopper, this gas-powered gearbox is durable and reliable for maintaining your lawn with ease. With a simple design and easy installation, this gearbox is a crucial component for ensuring smooth and efficient operation of your lawn mower.