The Oregon 85015 Spindle Assembly is a high-quality replacement part designed for various MTD group lawn tractors with 38-inch and 42-inch cutting decks manufactured from 1990 onwards. This genuine Oregon spindle features a 5-point star blade mount and an overall length of 165.1 mm (6-1/2 inches), with a shaft length of 139.7 mm (5-1/2 inches). It is engineered to replace multiple MTD OEM part numbers, including 618-0063, 618-0072, 618-0073, 918-0073, and their various suffixes, ensuring reliable performance and a precise fit for compatible MTD, Cub Cadet, Troy-Bilt, Yard-Man, and other brands.