The MTD 6640125A Grass Catcher Assembly is a genuine OEM replacement part designed for MTD 400 Series Rear Engine Riders. This essential component effectively collects grass clippings as you mow, ensuring a clean and tidy lawn. The assembly includes both the durable grass bag and its supporting frame, engineered for easy attachment and removal. With dimensions of approximately 508 mm length, 406.4 mm width, and 406.4 mm height, and weighing around 2.268 kg, it provides reliable performance for maintaining your riding mower.