This Genuine Tohatsu Marine Part is an Extension Housing with the part number 3S7Q61110-0. It is designed to be used in Tohatsu outboard motors and is made with high-quality materials to ensure durability and longevity. The Extension Housing is an essential component of the motor's transmission system, providing support and protection for the gears and other internal components. This part is a reliable replacement option for damaged or worn-out extension housings, ensuring optimal performance and efficiency of your Tohatsu outboard motor.